./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 933072632c6a38270f958834ec21adc26eb3cd8e8e46c1ac850ead52e91fbd69 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:41,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:41,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:41,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:41,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:41,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:41,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:41,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:41,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:41,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:41,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:41,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:41,498 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:41,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:41,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:41,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:41,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:41,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:41,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:41,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:41,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:41,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:41,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:41,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:41,506 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:41,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:41,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:41,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:41,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:41,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:41,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:41,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:41,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:41,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:41,512 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:41,513 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:41,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:41,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:41,514 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:41,514 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 933072632c6a38270f958834ec21adc26eb3cd8e8e46c1ac850ead52e91fbd69 [2023-11-19 07:56:41,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:41,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:41,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:41,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:41,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:41,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c [2023-11-19 07:56:45,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:45,384 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:45,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c [2023-11-19 07:56:45,405 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data/f196200cd/fa17d7662b614750a33df58be4dec7b7/FLAGa795dd303 [2023-11-19 07:56:45,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data/f196200cd/fa17d7662b614750a33df58be4dec7b7 [2023-11-19 07:56:45,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:45,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:45,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:45,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:45,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:45,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:45,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb0ce05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45, skipping insertion in model container [2023-11-19 07:56:45,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:45,469 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:45,699 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[1997,2010] [2023-11-19 07:56:45,708 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[2366,2379] [2023-11-19 07:56:45,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:45,804 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:45,832 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[1997,2010] [2023-11-19 07:56:45,837 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[2366,2379] [2023-11-19 07:56:45,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:45,907 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:45,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45 WrapperNode [2023-11-19 07:56:45,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:45,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:45,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:45,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:45,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:45,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:45,984 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-11-19 07:56:45,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:45,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:45,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:45,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:45,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:45,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:46,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:46,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:46,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:46,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (1/1) ... [2023-11-19 07:56:46,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:46,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:46,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:46,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-19 07:56:46,127 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-19 07:56:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:46,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:56:46,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:56:46,210 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:46,212 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:46,749 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:46,761 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:46,761 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:56:46,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:46 BoogieIcfgContainer [2023-11-19 07:56:46,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:46,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:46,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:46,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:46,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:45" (1/3) ... [2023-11-19 07:56:46,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6f3c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:46, skipping insertion in model container [2023-11-19 07:56:46,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:45" (2/3) ... [2023-11-19 07:56:46,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6f3c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:46, skipping insertion in model container [2023-11-19 07:56:46,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:46" (3/3) ... [2023-11-19 07:56:46,777 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_3a.c.cil.c [2023-11-19 07:56:46,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:46,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:56:46,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:46,861 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=LoopHeads, 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;@52f52327, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:46,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:56:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 70 states have internal predecessors, (107), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:56:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:56:46,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:46,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:46,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:46,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2023-11-19 07:56:46,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:46,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774835820] [2023-11-19 07:56:46,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:46,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:47,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:47,117 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:47,119 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:56:47,121 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-19 07:56:47,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-19 07:56:47,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:47,132 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:56:47,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:56:47,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:56:47 BoogieIcfgContainer [2023-11-19 07:56:47,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:56:47,173 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:56:47,173 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:56:47,173 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:56:47,174 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:46" (3/4) ... [2023-11-19 07:56:47,176 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:56:47,177 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:56:47,178 INFO L158 Benchmark]: Toolchain (without parser) took 1752.24ms. Allocated memory is still 144.7MB. Free memory was 109.0MB in the beginning and 96.8MB in the end (delta: 12.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-11-19 07:56:47,179 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 98.6MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:47,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.63ms. Allocated memory is still 144.7MB. Free memory was 108.6MB in the beginning and 94.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:56:47,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.52ms. Allocated memory is still 144.7MB. Free memory was 94.4MB in the beginning and 92.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:47,181 INFO L158 Benchmark]: Boogie Preprocessor took 39.07ms. Allocated memory is still 144.7MB. Free memory was 92.4MB in the beginning and 90.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:47,182 INFO L158 Benchmark]: RCFGBuilder took 740.62ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 111.5MB in the end (delta: -20.8MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2023-11-19 07:56:47,183 INFO L158 Benchmark]: TraceAbstraction took 403.15ms. Allocated memory is still 144.7MB. Free memory was 110.9MB in the beginning and 96.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:56:47,183 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 144.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:47,187 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 98.6MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 481.63ms. Allocated memory is still 144.7MB. Free memory was 108.6MB in the beginning and 94.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.52ms. Allocated memory is still 144.7MB. Free memory was 94.4MB in the beginning and 92.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.07ms. Allocated memory is still 144.7MB. Free memory was 92.4MB in the beginning and 90.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 740.62ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 111.5MB in the end (delta: -20.8MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * TraceAbstraction took 403.15ms. Allocated memory is still 144.7MB. Free memory was 110.9MB in the beginning and 96.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 144.7MB. Free memory is still 96.8MB. 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 a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] 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 < 1.398f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 77 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=77occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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 [2023-11-19 07:56:47,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 933072632c6a38270f958834ec21adc26eb3cd8e8e46c1ac850ead52e91fbd69 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:50,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:50,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:56:50,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:50,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:50,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:50,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:50,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:50,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:50,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:50,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:50,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:50,299 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:50,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:50,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:50,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:50,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:50,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:50,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:50,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:50,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:50,306 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:56:50,307 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:56:50,307 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:56:50,308 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:50,309 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:50,309 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:50,310 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:50,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:50,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:50,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:50,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:50,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:50,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:50,316 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:56:50,316 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:56:50,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:50,317 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:50,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:50,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:50,319 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:56:50,320 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:50,320 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 933072632c6a38270f958834ec21adc26eb3cd8e8e46c1ac850ead52e91fbd69 [2023-11-19 07:56:50,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:50,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:50,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:50,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:50,858 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:50,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c [2023-11-19 07:56:54,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:54,534 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:54,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c [2023-11-19 07:56:54,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data/4ef00c89f/db5ce54469414b6da735396192f50e83/FLAGbaa2a9cd9 [2023-11-19 07:56:54,567 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/data/4ef00c89f/db5ce54469414b6da735396192f50e83 [2023-11-19 07:56:54,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:54,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:54,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:54,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:54,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:54,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:54" (1/1) ... [2023-11-19 07:56:54,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4660a178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:54, skipping insertion in model container [2023-11-19 07:56:54,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:54" (1/1) ... [2023-11-19 07:56:54,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:54,801 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[1997,2010] [2023-11-19 07:56:54,810 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[2366,2379] [2023-11-19 07:56:54,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:54,915 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:54,945 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[1997,2010] [2023-11-19 07:56:54,947 WARN L240 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_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/sv-benchmarks/c/combinations/square_2+soft_float_3a.c.cil.c[2366,2379] [2023-11-19 07:56:54,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:55,012 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:55,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55 WrapperNode [2023-11-19 07:56:55,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:55,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:55,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:55,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:55,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,089 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-19 07:56:55,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:55,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:55,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:55,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:55,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:55,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:55,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:55,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:55,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:55,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:55,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-19 07:56:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-19 07:56:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:56:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:56:55,361 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:55,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:58,078 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:58,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:58,090 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:56:58,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:58 BoogieIcfgContainer [2023-11-19 07:56:58,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:58,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:58,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:58,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:58,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:54" (1/3) ... [2023-11-19 07:56:58,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b913a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:58, skipping insertion in model container [2023-11-19 07:56:58,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (2/3) ... [2023-11-19 07:56:58,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b913a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:58, skipping insertion in model container [2023-11-19 07:56:58,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:58" (3/3) ... [2023-11-19 07:56:58,107 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_3a.c.cil.c [2023-11-19 07:56:58,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:58,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:56:58,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:58,204 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=LoopHeads, 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;@6754c394, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:58,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:56:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:56:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:56:58,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:58,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:58,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:58,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2023-11-19 07:56:58,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:56:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673690905] [2023-11-19 07:56:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:58,255 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 [2023-11-19 07:56:58,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:56:58,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:56:58,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:56:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:59,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:56:59,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:59,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:59,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:56:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673690905] [2023-11-19 07:56:59,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673690905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:59,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:59,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:59,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506883371] [2023-11-19 07:56:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:59,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:59,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:56:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:59,204 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2023-11-19 07:56:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:59,241 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2023-11-19 07:56:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:59,244 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 [2023-11-19 07:56:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:59,257 INFO L225 Difference]: With dead ends: 115 [2023-11-19 07:56:59,257 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:56:59,262 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 [2023-11-19 07:56:59,267 INFO L413 NwaCegarLoop]: 81 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, 81 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 [2023-11-19 07:56:59,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:56:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:56:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 07:56:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:56:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2023-11-19 07:56:59,331 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2023-11-19 07:56:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:59,332 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2023-11-19 07:56:59,332 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) [2023-11-19 07:56:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2023-11-19 07:56:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:56:59,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:59,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:59,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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)] Ended with exit code 0 [2023-11-19 07:56:59,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:56:59,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:59,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2023-11-19 07:56:59,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:56:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156724695] [2023-11-19 07:56:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,551 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 [2023-11-19 07:56:59,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:56:59,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:56:59,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e432a8a-7b2d-41a4-af99-fe17884f1a6e/bin/uautomizer-verify-uCwYo4JHxu/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