./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_1+soft_float_2a.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_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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_f0628017-2e38-40bf-8149-718ef1f6f070/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 59c8d963265d6c742e08e9840805bbe9b84f06daace9b9a62f5aab6f4fda5366 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:05,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:05,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:05,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:05,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:05,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:05,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:05,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:05,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:05,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:05,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:05,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:05,713 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:05,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:05,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:05,714 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:05,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:05,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:05,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:05,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:05,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:05,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:05,718 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:05,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:05,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:05,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:05,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:05,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:05,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:05,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:05,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:05,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:05,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:05,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:05,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:05,724 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:05,725 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:05,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:05,725 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:05,725 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_f0628017-2e38-40bf-8149-718ef1f6f070/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59c8d963265d6c742e08e9840805bbe9b84f06daace9b9a62f5aab6f4fda5366 [2023-11-19 08:05:06,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:06,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:06,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:06,133 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:06,133 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:06,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c [2023-11-19 08:05:09,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:09,534 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:09,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c [2023-11-19 08:05:09,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data/f7637bb4e/d9cbe5bfcc824e62953cfc4322654dad/FLAGfb51be7e1 [2023-11-19 08:05:09,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data/f7637bb4e/d9cbe5bfcc824e62953cfc4322654dad [2023-11-19 08:05:09,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:09,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:09,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:09,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:09,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:09,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:09" (1/1) ... [2023-11-19 08:05:09,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325bf6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:09, skipping insertion in model container [2023-11-19 08:05:09,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:09" (1/1) ... [2023-11-19 08:05:09,654 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:09,892 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[1996,2009] [2023-11-19 08:05:09,900 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[2365,2378] [2023-11-19 08:05:09,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:09,994 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:10,027 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[1996,2009] [2023-11-19 08:05:10,031 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[2365,2378] [2023-11-19 08:05:10,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:10,098 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:10,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10 WrapperNode [2023-11-19 08:05:10,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:10,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:10,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:10,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:10,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,188 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-11-19 08:05:10,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:10,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:10,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:10,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:10,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:10,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:10,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:10,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:10,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:10,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:10,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:10,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-19 08:05:10,348 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-19 08:05:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:10,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:05:10,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:05:10,486 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:10,489 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:10,906 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:10,915 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:10,916 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:05:10,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:10 BoogieIcfgContainer [2023-11-19 08:05:10,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:10,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:10,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:10,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:10,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:09" (1/3) ... [2023-11-19 08:05:10,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ab36a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:10, skipping insertion in model container [2023-11-19 08:05:10,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (2/3) ... [2023-11-19 08:05:10,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ab36a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:10, skipping insertion in model container [2023-11-19 08:05:10,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:10" (3/3) ... [2023-11-19 08:05:10,931 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_2a.c.cil.c [2023-11-19 08:05:10,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:10,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:05:10,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:11,004 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;@22a7446f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:11,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:05:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 68 states have (on average 1.588235294117647) internal successors, (108), 71 states have internal predecessors, (108), 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 08:05:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 08:05:11,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:11,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:11,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:11,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:11,021 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2023-11-19 08:05:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:11,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832693458] [2023-11-19 08:05:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:11,154 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:05:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:11,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:05:11,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:05:11,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-19 08:05:11,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-19 08:05:11,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:11,197 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 08:05:11,202 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:05:11,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:05:11 BoogieIcfgContainer [2023-11-19 08:05:11,220 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:05:11,221 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:05:11,221 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:05:11,221 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:05:11,222 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:10" (3/4) ... [2023-11-19 08:05:11,225 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:05:11,226 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:05:11,227 INFO L158 Benchmark]: Toolchain (without parser) took 1646.21ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 96.7MB in the beginning and 139.3MB in the end (delta: -42.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:11,228 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 144.7MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:11,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.57ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 82.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 08:05:11,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.05ms. Allocated memory is still 144.7MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:11,230 INFO L158 Benchmark]: Boogie Preprocessor took 65.17ms. Allocated memory is still 144.7MB. Free memory was 80.0MB in the beginning and 78.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:11,231 INFO L158 Benchmark]: RCFGBuilder took 665.23ms. Allocated memory is still 144.7MB. Free memory was 78.4MB in the beginning and 59.0MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 08:05:11,231 INFO L158 Benchmark]: TraceAbstraction took 296.86ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 57.8MB in the beginning and 139.3MB in the end (delta: -81.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:11,232 INFO L158 Benchmark]: Witness Printer took 4.93ms. Allocated memory is still 176.2MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:11,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 144.7MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.57ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 82.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.05ms. Allocated memory is still 144.7MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.17ms. Allocated memory is still 144.7MB. Free memory was 80.0MB in the beginning and 78.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 665.23ms. Allocated memory is still 144.7MB. Free memory was 78.4MB in the beginning and 59.0MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 296.86ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 57.8MB in the beginning and 139.3MB in the end (delta: -81.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.93ms. Allocated memory is still 176.2MB. Free memory is still 139.3MB. 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: [L322] COND TRUE __VERIFIER_nondet_int() [L323] 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 < 1.39f) 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, 78 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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 08:05:11,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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_f0628017-2e38-40bf-8149-718ef1f6f070/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 59c8d963265d6c742e08e9840805bbe9b84f06daace9b9a62f5aab6f4fda5366 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:14,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:14,143 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 08:05:14,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:14,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:14,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:14,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:14,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:14,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:14,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:14,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:14,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:14,219 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:14,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:14,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:14,223 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:14,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:14,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:14,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:14,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:14,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:14,226 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:05:14,226 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:05:14,227 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:05:14,227 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:14,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:14,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:14,228 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:14,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:14,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:14,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:14,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:14,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:14,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:14,232 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:05:14,233 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:05:14,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:14,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:14,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:14,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:14,235 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:05:14,235 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:14,235 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_f0628017-2e38-40bf-8149-718ef1f6f070/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59c8d963265d6c742e08e9840805bbe9b84f06daace9b9a62f5aab6f4fda5366 [2023-11-19 08:05:14,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:14,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:14,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:14,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:14,652 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:14,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c [2023-11-19 08:05:18,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:18,317 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:18,317 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c [2023-11-19 08:05:18,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data/d17709225/37e7821c32d94719a50c695126896933/FLAG2a376aa62 [2023-11-19 08:05:18,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/data/d17709225/37e7821c32d94719a50c695126896933 [2023-11-19 08:05:18,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:18,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:18,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:18,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:18,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:18,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:18,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4146dc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18, skipping insertion in model container [2023-11-19 08:05:18,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:18,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:18,686 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[1996,2009] [2023-11-19 08:05:18,694 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[2365,2378] [2023-11-19 08:05:18,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:18,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:18,811 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[1996,2009] [2023-11-19 08:05:18,813 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_f0628017-2e38-40bf-8149-718ef1f6f070/sv-benchmarks/c/combinations/square_1+soft_float_2a.c.cil.c[2365,2378] [2023-11-19 08:05:18,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:18,877 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:18,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18 WrapperNode [2023-11-19 08:05:18,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:18,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:18,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:18,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:18,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:18,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:18,983 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-19 08:05:18,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:18,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:18,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:18,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:19,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:19,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:19,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:19,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:19,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (1/1) ... [2023-11-19 08:05:19,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:19,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:19,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:19,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:05:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-19 08:05:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-19 08:05:19,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:19,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:05:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:05:19,290 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:19,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:21,972 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:21,982 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:21,982 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:05:21,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:21 BoogieIcfgContainer [2023-11-19 08:05:21,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:21,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:21,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:21,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:21,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:18" (1/3) ... [2023-11-19 08:05:21,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e4e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:21, skipping insertion in model container [2023-11-19 08:05:21,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:18" (2/3) ... [2023-11-19 08:05:21,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e4e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:21, skipping insertion in model container [2023-11-19 08:05:21,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:21" (3/3) ... [2023-11-19 08:05:21,998 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_2a.c.cil.c [2023-11-19 08:05:22,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:22,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:05:22,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:22,097 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;@1bd6f15b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:22,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:05:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 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 08:05:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 08:05:22,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:22,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:22,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:22,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2023-11-19 08:05:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:05:22,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243935470] [2023-11-19 08:05:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:22,159 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 08:05:22,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:05:22,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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 08:05:22,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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 08:05:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:22,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:05:22,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:22,779 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 08:05:22,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:22,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:05:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243935470] [2023-11-19 08:05:22,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243935470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:22,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:22,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:22,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708895431] [2023-11-19 08:05:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:22,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:22,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:05:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:22,831 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 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 08:05:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:22,884 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2023-11-19 08:05:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:05:22,887 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 08:05:22,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:22,906 INFO L225 Difference]: With dead ends: 117 [2023-11-19 08:05:22,906 INFO L226 Difference]: Without dead ends: 52 [2023-11-19 08:05:22,912 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 08:05:22,919 INFO L413 NwaCegarLoop]: 82 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, 82 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 08:05:22,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-19 08:05:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-19 08:05:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 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 08:05:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2023-11-19 08:05:22,984 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2023-11-19 08:05:22,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:22,985 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2023-11-19 08:05:22,985 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 08:05:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2023-11-19 08:05:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 08:05:22,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:22,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:23,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:23,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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 08:05:23,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:23,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2023-11-19 08:05:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:05:23,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762661345] [2023-11-19 08:05:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:23,207 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 08:05:23,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:05:23,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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 08:05:23,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0628017-2e38-40bf-8149-718ef1f6f070/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