./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- 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-e04fb08 [2022-11-16 12:19:09,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:19:09,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:19:09,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:19:09,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:19:09,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:19:09,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:19:09,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:19:09,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:19:09,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:19:09,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:19:09,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:19:09,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:19:09,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:19:09,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:19:09,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:19:09,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:19:09,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:19:09,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:19:09,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:19:09,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:19:09,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:19:09,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:19:09,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:19:09,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:19:09,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:19:09,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:19:09,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:19:09,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:19:09,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:19:09,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:19:09,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:19:09,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:19:09,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:19:09,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:19:09,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:19:09,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:19:09,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:19:09,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:19:09,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:19:09,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:19:09,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:19:09,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:19:09,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:19:09,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:19:09,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:19:09,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:19:09,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:19:09,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:19:09,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:19:09,415 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:19:09,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:19:09,416 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:19:09,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:19:09,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:19:09,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:19:09,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:19:09,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:19:09,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:19:09,418 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:19:09,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:19:09,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:19:09,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:19:09,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:19:09,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:19:09,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:19:09,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:09,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:19:09,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:19:09,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:19:09,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:19:09,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:19:09,423 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:19:09,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:19:09,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:19:09,424 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2022-11-16 12:19:09,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:19:09,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:19:09,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:19:09,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:19:09,724 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:19:09,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-11-16 12:19:09,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/9dbd2abf9/a29304ba7de54f0fa85614c1857f3737/FLAG6679f2c67 [2022-11-16 12:19:10,258 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:19:10,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-11-16 12:19:10,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/9dbd2abf9/a29304ba7de54f0fa85614c1857f3737/FLAG6679f2c67 [2022-11-16 12:19:10,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/9dbd2abf9/a29304ba7de54f0fa85614c1857f3737 [2022-11-16 12:19:10,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:19:10,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:19:10,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:10,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:19:10,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:19:10,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:10" (1/1) ... [2022-11-16 12:19:10,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6516c185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:10, skipping insertion in model container [2022-11-16 12:19:10,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:10" (1/1) ... [2022-11-16 12:19:10,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:19:10,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:19:11,046 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-11-16 12:19:11,053 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-11-16 12:19:11,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:11,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:19:11,157 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-11-16 12:19:11,159 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-11-16 12:19:11,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:11,208 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:19:11,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11 WrapperNode [2022-11-16 12:19:11,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:11,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:11,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:19:11,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:19:11,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,281 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 210 [2022-11-16 12:19:11,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:11,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:19:11,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:19:11,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:19:11,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,348 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:19:11,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:19:11,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:19:11,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:19:11,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (1/1) ... [2022-11-16 12:19:11,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:11,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:19:11,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:19:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:19:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 12:19:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 12:19:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:19:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:19:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:19:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:19:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:19:11,523 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:19:11,526 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:19:12,061 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:19:12,070 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:19:12,070 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:19:12,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:12 BoogieIcfgContainer [2022-11-16 12:19:12,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:19:12,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:19:12,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:19:12,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:19:12,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:19:10" (1/3) ... [2022-11-16 12:19:12,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bc7a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:12, skipping insertion in model container [2022-11-16 12:19:12,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:11" (2/3) ... [2022-11-16 12:19:12,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bc7a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:12, skipping insertion in model container [2022-11-16 12:19:12,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:12" (3/3) ... [2022-11-16 12:19:12,097 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2022-11-16 12:19:12,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:19:12,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:19:12,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:19:12,218 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2355f500, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:19:12,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:19:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 89 states have internal predecessors, (140), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:19:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:19:12,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:12,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:12,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1847035396, now seen corresponding path program 1 times [2022-11-16 12:19:12,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:12,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854715222] [2022-11-16 12:19:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:12,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:12,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:12,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854715222] [2022-11-16 12:19:12,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854715222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:12,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:12,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:12,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51152208] [2022-11-16 12:19:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:12,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:19:12,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:19:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:19:12,505 INFO L87 Difference]: Start difference. First operand has 99 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 89 states have internal predecessors, (140), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2022-11-16 12:19:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:12,579 INFO L93 Difference]: Finished difference Result 193 states and 317 transitions. [2022-11-16 12:19:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:19:12,581 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 [2022-11-16 12:19:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:12,595 INFO L225 Difference]: With dead ends: 193 [2022-11-16 12:19:12,595 INFO L226 Difference]: Without dead ends: 92 [2022-11-16 12:19:12,601 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 [2022-11-16 12:19:12,606 INFO L413 NwaCegarLoop]: 149 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, 149 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 [2022-11-16 12:19:12,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:19:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-16 12:19:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-16 12:19:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 82 states have internal predecessors, (123), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:19:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 140 transitions. [2022-11-16 12:19:12,700 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 140 transitions. Word has length 7 [2022-11-16 12:19:12,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:12,701 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 140 transitions. [2022-11-16 12:19:12,701 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) [2022-11-16 12:19:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 140 transitions. [2022-11-16 12:19:12,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:19:12,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:12,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:19:12,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:12,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1846975814, now seen corresponding path program 1 times [2022-11-16 12:19:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:12,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864816728] [2022-11-16 12:19:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:12,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:19:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:12,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:19:12,816 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:19:12,818 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 12:19:12,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 12:19:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:19:12,827 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:19:12,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:19:12,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:19:12 BoogieIcfgContainer [2022-11-16 12:19:12,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:19:12,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:19:12,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:19:12,864 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:19:12,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:12" (3/4) ... [2022-11-16 12:19:12,868 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:19:12,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:19:12,869 INFO L158 Benchmark]: Toolchain (without parser) took 2099.50ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 76.6MB in the beginning and 126.7MB in the end (delta: -50.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:19:12,869 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 119.5MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:19:12,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.46ms. Allocated memory is still 119.5MB. Free memory was 76.4MB in the beginning and 88.8MB in the end (delta: -12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:19:12,870 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.69ms. Allocated memory is still 119.5MB. Free memory was 88.8MB in the beginning and 86.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:19:12,871 INFO L158 Benchmark]: Boogie Preprocessor took 70.77ms. Allocated memory is still 119.5MB. Free memory was 86.3MB in the beginning and 84.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:19:12,871 INFO L158 Benchmark]: RCFGBuilder took 718.33ms. Allocated memory is still 119.5MB. Free memory was 84.7MB in the beginning and 62.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 12:19:12,872 INFO L158 Benchmark]: TraceAbstraction took 787.98ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 62.2MB in the beginning and 126.7MB in the end (delta: -64.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:19:12,872 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 155.2MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:19:12,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 119.5MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.46ms. Allocated memory is still 119.5MB. Free memory was 76.4MB in the beginning and 88.8MB in the end (delta: -12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.69ms. Allocated memory is still 119.5MB. Free memory was 88.8MB in the beginning and 86.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.77ms. Allocated memory is still 119.5MB. Free memory was 86.3MB in the beginning and 84.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 718.33ms. Allocated memory is still 119.5MB. Free memory was 84.7MB in the beginning and 62.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 787.98ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 62.2MB in the beginning and 126.7MB in the end (delta: -64.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 155.2MB. Free memory is still 126.7MB. 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [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: 60]: 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, 99 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 149 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2022-11-16 12:19:12,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- 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-e04fb08 [2022-11-16 12:19:15,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:19:15,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:19:15,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:19:15,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:19:15,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:19:15,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:19:15,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:19:15,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:19:15,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:19:15,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:19:15,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:19:15,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:19:15,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:19:15,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:19:15,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:19:15,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:19:15,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:19:15,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:19:15,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:19:15,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:19:15,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:19:15,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:19:15,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:19:15,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:19:15,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:19:15,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:19:15,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:19:15,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:19:15,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:19:15,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:19:15,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:19:15,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:19:15,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:19:15,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:19:15,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:19:15,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:19:15,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:19:15,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:19:15,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:19:15,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:19:15,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:19:15,453 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:19:15,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:19:15,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:19:15,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:19:15,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:19:15,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:19:15,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:19:15,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:19:15,458 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:19:15,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:19:15,459 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:19:15,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:19:15,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:19:15,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:19:15,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:19:15,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:19:15,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:19:15,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:19:15,461 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:19:15,461 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:19:15,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:19:15,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:19:15,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:19:15,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:19:15,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:19:15,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:19:15,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:15,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:19:15,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:19:15,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:19:15,464 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:19:15,464 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:19:15,464 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:19:15,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:19:15,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:19:15,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:19:15,465 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2022-11-16 12:19:15,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:19:15,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:19:15,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:19:15,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:19:15,835 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:19:15,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-11-16 12:19:15,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/d3c79888b/f99ead53928b4de697f43c6d1eeb5241/FLAG8c818f173 [2022-11-16 12:19:16,444 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:19:16,445 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-11-16 12:19:16,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/d3c79888b/f99ead53928b4de697f43c6d1eeb5241/FLAG8c818f173 [2022-11-16 12:19:16,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/data/d3c79888b/f99ead53928b4de697f43c6d1eeb5241 [2022-11-16 12:19:16,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:19:16,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:19:16,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:16,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:19:16,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:19:16,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:16" (1/1) ... [2022-11-16 12:19:16,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a756c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:16, skipping insertion in model container [2022-11-16 12:19:16,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:16" (1/1) ... [2022-11-16 12:19:16,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:19:16,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:19:17,028 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-11-16 12:19:17,032 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-11-16 12:19:17,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:17,131 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:19:17,147 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-11-16 12:19:17,148 WARN L229 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_524248f7-94b4-4178-a199-3a9b1e6c96a1/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-11-16 12:19:17,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:17,197 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:19:17,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17 WrapperNode [2022-11-16 12:19:17,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:17,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:17,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:19:17,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:19:17,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,274 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-11-16 12:19:17,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:17,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:19:17,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:19:17,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:19:17,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:19:17,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:19:17,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:19:17,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:19:17,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (1/1) ... [2022-11-16 12:19:17,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:17,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:17,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:19:17,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:19:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:19:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:19:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 12:19:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 12:19:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:19:17,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:19:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:19:17,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:19:17,533 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:19:17,536 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:19:20,224 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:19:20,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:19:20,232 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:19:20,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:20 BoogieIcfgContainer [2022-11-16 12:19:20,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:19:20,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:19:20,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:19:20,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:19:20,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:19:16" (1/3) ... [2022-11-16 12:19:20,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c3605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:20, skipping insertion in model container [2022-11-16 12:19:20,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:17" (2/3) ... [2022-11-16 12:19:20,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c3605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:20, skipping insertion in model container [2022-11-16 12:19:20,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:20" (3/3) ... [2022-11-16 12:19:20,243 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2022-11-16 12:19:20,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:19:20,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:19:20,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:19:20,337 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56f34cc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:19:20,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:19:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:19:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:19:20,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:20,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:20,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-16 12:19:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:19:20,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492908136] [2022-11-16 12:19:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:20,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:20,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:19:20,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:19:20,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:19:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:20,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:19:20,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:20,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:20,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:19:20,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492908136] [2022-11-16 12:19:20,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492908136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:20,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:20,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052546005] [2022-11-16 12:19:20,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:20,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:19:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:19:20,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:19:20,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:19:20,964 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2022-11-16 12:19:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:21,002 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2022-11-16 12:19:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:19:21,005 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 [2022-11-16 12:19:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:21,022 INFO L225 Difference]: With dead ends: 157 [2022-11-16 12:19:21,023 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 12:19:21,028 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 [2022-11-16 12:19:21,036 INFO L413 NwaCegarLoop]: 117 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, 117 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 [2022-11-16 12:19:21,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:19:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 12:19:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-16 12:19:21,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:19:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-11-16 12:19:21,088 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2022-11-16 12:19:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:21,088 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-11-16 12:19:21,089 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) [2022-11-16 12:19:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2022-11-16 12:19:21,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:19:21,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:21,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:21,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:21,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:21,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-16 12:19:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:19:21,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412112318] [2022-11-16 12:19:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:21,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:21,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:19:21,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:19:21,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524248f7-94b4-4178-a199-3a9b1e6c96a1/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process