./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI --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 f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 --- 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-5e519f3 [2022-11-03 04:09:09,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:09,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:09,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:09,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:09,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:09,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:09,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:09,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:09,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:09,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:09,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:09,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:09,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:09,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:09,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:09,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:09,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:09,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:09,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:09,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:09,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:09,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:09,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:09,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:09,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:09,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:09,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:09,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:09,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:10,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:10,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:10,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:10,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:10,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:10,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:10,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:10,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:10,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:10,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:10,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:10,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:09:10,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:10,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:10,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:10,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:10,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:10,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:10,043 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:10,043 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:10,044 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:10,044 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:09:10,044 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:10,044 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:10,045 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:09:10,045 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:09:10,045 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:10,045 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:09:10,046 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:09:10,046 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:09:10,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:10,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:09:10,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:09:10,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:09:10,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:10,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:10,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:10,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:10,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:09:10,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:10,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:10,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:10,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:10,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:10,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:10,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:10,050 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:09:10,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:10,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:10,051 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:09:10,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:09:10,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:10,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:10,052 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_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 [2022-11-03 04:09:10,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:10,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:10,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:10,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:10,435 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:10,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-11-03 04:09:10,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/1c14f4328/daf82afa40414a8dbb6fcf5c8d669ba0/FLAG4510b6c81 [2022-11-03 04:09:11,098 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:11,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-11-03 04:09:11,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/1c14f4328/daf82afa40414a8dbb6fcf5c8d669ba0/FLAG4510b6c81 [2022-11-03 04:09:11,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/1c14f4328/daf82afa40414a8dbb6fcf5c8d669ba0 [2022-11-03 04:09:11,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:11,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:11,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:11,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:11,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:11,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:11,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce59274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11, skipping insertion in model container [2022-11-03 04:09:11,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:11,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:11,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:11,728 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-11-03 04:09:11,738 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-11-03 04:09:11,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:11,848 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:11,878 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-11-03 04:09:11,880 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-11-03 04:09:11,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:11,935 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:11,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11 WrapperNode [2022-11-03 04:09:11,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:11,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:11,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:11,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:11,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:11,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,016 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2022-11-03 04:09:12,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:12,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:12,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:12,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:12,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:12,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:12,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:12,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:12,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (1/1) ... [2022-11-03 04:09:12,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:12,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:12,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:12,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-03 04:09:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-03 04:09:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:09:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 04:09:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 04:09:12,311 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:12,314 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:12,788 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:13,009 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:13,009 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 04:09:13,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:13 BoogieIcfgContainer [2022-11-03 04:09:13,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:13,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:13,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:13,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:13,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:11" (1/3) ... [2022-11-03 04:09:13,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee5707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:13, skipping insertion in model container [2022-11-03 04:09:13,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:11" (2/3) ... [2022-11-03 04:09:13,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee5707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:13, skipping insertion in model container [2022-11-03 04:09:13,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:13" (3/3) ... [2022-11-03 04:09:13,023 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c [2022-11-03 04:09:13,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:13,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 04:09:13,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:13,110 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;@1ef3346c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:13,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 04:09:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 04:09:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:09:13,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:13,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:09:13,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:13,139 INFO L85 PathProgramCache]: Analyzing trace with hash 9849864, now seen corresponding path program 1 times [2022-11-03 04:09:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:13,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804905130] [2022-11-03 04:09:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:09:13,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:09:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:09:13,308 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:09:13,311 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:09:13,313 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-03 04:09:13,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-03 04:09:13,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:09:13,321 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 04:09:13,327 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:09:13,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:09:13 BoogieIcfgContainer [2022-11-03 04:09:13,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:09:13,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:09:13,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:09:13,353 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:09:13,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:13" (3/4) ... [2022-11-03 04:09:13,359 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:09:13,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:09:13,361 INFO L158 Benchmark]: Toolchain (without parser) took 1943.98ms. Allocated memory is still 125.8MB. Free memory was 92.0MB in the beginning and 47.5MB in the end (delta: 44.5MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2022-11-03 04:09:13,362 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 55.8MB in the beginning and 55.8MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:09:13,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.38ms. Allocated memory is still 125.8MB. Free memory was 91.7MB in the beginning and 98.5MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:09:13,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.36ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:09:13,371 INFO L158 Benchmark]: Boogie Preprocessor took 55.71ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 94.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:09:13,373 INFO L158 Benchmark]: RCFGBuilder took 939.09ms. Allocated memory is still 125.8MB. Free memory was 94.3MB in the beginning and 62.9MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-03 04:09:13,373 INFO L158 Benchmark]: TraceAbstraction took 336.71ms. Allocated memory is still 125.8MB. Free memory was 62.2MB in the beginning and 47.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 04:09:13,374 INFO L158 Benchmark]: Witness Printer took 7.36ms. Allocated memory is still 125.8MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:09:13,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 55.8MB in the beginning and 55.8MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 516.38ms. Allocated memory is still 125.8MB. Free memory was 91.7MB in the beginning and 98.5MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.36ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.71ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 94.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 939.09ms. Allocated memory is still 125.8MB. Free memory was 94.3MB in the beginning and 62.9MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 336.71ms. Allocated memory is still 125.8MB. Free memory was 62.2MB in the beginning and 47.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 7.36ms. Allocated memory is still 125.8MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.4f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 04:09:13,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI --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 f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 --- 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-5e519f3 [2022-11-03 04:09:16,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:16,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:16,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:16,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:16,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:16,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:16,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:16,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:16,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:16,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:16,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:16,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:16,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:16,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:16,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:16,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:16,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:16,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:16,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:16,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:16,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:16,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:16,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:16,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:16,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:16,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:16,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:16,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:16,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:16,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:16,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:16,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:16,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:16,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:16,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:16,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:16,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:16,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:16,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:16,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:16,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 04:09:16,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:16,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:16,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:16,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:16,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:16,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:16,264 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:16,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:16,265 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:16,265 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:16,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:16,267 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:16,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:16,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:09:16,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:09:16,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:16,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:16,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:16,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:16,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:09:16,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:09:16,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:09:16,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:09:16,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:16,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:16,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:16,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:16,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:09:16,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:16,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:16,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:16,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:16,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:16,273 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:09:16,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:09:16,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:16,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:16,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:09:16,275 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_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 [2022-11-03 04:09:16,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:16,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:16,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:16,763 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:16,764 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:16,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-11-03 04:09:16,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/430d7f20f/6a0cfed7497744f1afa0039c3cc9428d/FLAG452e62798 [2022-11-03 04:09:17,544 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:17,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2022-11-03 04:09:17,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/430d7f20f/6a0cfed7497744f1afa0039c3cc9428d/FLAG452e62798 [2022-11-03 04:09:17,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/data/430d7f20f/6a0cfed7497744f1afa0039c3cc9428d [2022-11-03 04:09:17,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:17,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:17,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:17,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:17,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:17,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:17" (1/1) ... [2022-11-03 04:09:17,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c05f07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:17, skipping insertion in model container [2022-11-03 04:09:17,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:17" (1/1) ... [2022-11-03 04:09:17,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:17,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:18,118 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-11-03 04:09:18,134 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-11-03 04:09:18,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:18,255 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:18,278 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008] [2022-11-03 04:09:18,280 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_169431f4-075a-4746-bd42-b9816d00709e/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402] [2022-11-03 04:09:18,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:18,324 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:18,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18 WrapperNode [2022-11-03 04:09:18,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:18,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:18,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:18,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:18,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,405 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2022-11-03 04:09:18,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:18,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:18,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:18,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:18,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:18,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:18,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:18,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:18,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (1/1) ... [2022-11-03 04:09:18,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:18,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:18,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 04:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-03 04:09:18,570 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-03 04:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:18,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 04:09:18,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 04:09:18,709 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:18,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:21,367 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:21,377 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:21,378 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 04:09:21,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:21 BoogieIcfgContainer [2022-11-03 04:09:21,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:21,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:21,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:21,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:21,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:17" (1/3) ... [2022-11-03 04:09:21,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df2d2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:21, skipping insertion in model container [2022-11-03 04:09:21,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:18" (2/3) ... [2022-11-03 04:09:21,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df2d2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:21, skipping insertion in model container [2022-11-03 04:09:21,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:21" (3/3) ... [2022-11-03 04:09:21,393 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c [2022-11-03 04:09:21,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:21,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 04:09:21,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:21,489 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;@3865a010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:21,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 04:09:21,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 04:09:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:09:21,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:21,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:21,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-03 04:09:21,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:21,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373101517] [2022-11-03 04:09:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:21,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:21,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:21,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:21,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:09:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:22,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 04:09:22,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:22,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:09:22,324 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:22,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373101517] [2022-11-03 04:09:22,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373101517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:22,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:22,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:09:22,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162922201] [2022-11-03 04:09:22,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:22,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:09:22,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:09:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:09:22,394 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:09:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:22,443 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-11-03 04:09:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:09:22,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:09:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:22,457 INFO L225 Difference]: With dead ends: 157 [2022-11-03 04:09:22,457 INFO L226 Difference]: Without dead ends: 74 [2022-11-03 04:09:22,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:09:22,465 INFO L413 NwaCegarLoop]: 116 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, 116 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 [2022-11-03 04:09:22,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:09:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-03 04:09:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-03 04:09:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-03 04:09:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2022-11-03 04:09:22,517 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2022-11-03 04:09:22,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:22,518 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2022-11-03 04:09:22,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:09:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2022-11-03 04:09:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:09:22,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:22,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:22,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 04:09:22,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:09:22,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:22,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-03 04:09:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:22,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865606472] [2022-11-03 04:09:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:22,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:22,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:22,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:22,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169431f4-075a-4746-bd42-b9816d00709e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process