./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya --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 9c42f4f2be0dcf024bccd221a1bf3d1e29db98dcd801b03fa6d425f50f1c2522 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:41:46,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:41:46,564 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:41:46,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:41:46,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:41:46,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:41:46,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:41:46,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:41:46,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:41:46,597 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:41:46,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:41:46,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:41:46,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:41:46,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:41:46,600 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:41:46,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:41:46,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:41:46,602 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:41:46,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:41:46,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:41:46,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:41:46,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:41:46,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:41:46,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:41:46,606 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:41:46,606 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:41:46,606 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:41:46,607 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:41:46,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:41:46,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:41:46,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:41:46,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:41:46,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:41:46,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:41:46,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:41:46,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:41:46,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:41:46,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:41:46,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:41:46,610 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:41:46,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:41:46,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:41:46,611 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_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c42f4f2be0dcf024bccd221a1bf3d1e29db98dcd801b03fa6d425f50f1c2522 [2023-11-29 01:41:46,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:41:46,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:41:46,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:41:46,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:41:46,867 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:41:46,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i [2023-11-29 01:41:49,790 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:41:49,974 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:41:49,974 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i [2023-11-29 01:41:49,982 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data/dd1b3ab64/f5ed0d56ade44496bf33a9198b4e43ed/FLAG0d6af2930 [2023-11-29 01:41:49,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data/dd1b3ab64/f5ed0d56ade44496bf33a9198b4e43ed [2023-11-29 01:41:49,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:41:50,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:41:50,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:41:50,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:41:50,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:41:50,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:41:49" (1/1) ... [2023-11-29 01:41:50,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b40361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50, skipping insertion in model container [2023-11-29 01:41:50,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:41:49" (1/1) ... [2023-11-29 01:41:50,034 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:41:50,162 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_c7b809cf-1399-4700-a942-7fc6dfffc089/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i[915,928] [2023-11-29 01:41:50,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:41:50,221 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:41:50,235 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_c7b809cf-1399-4700-a942-7fc6dfffc089/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i[915,928] [2023-11-29 01:41:50,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:41:50,279 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:41:50,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50 WrapperNode [2023-11-29 01:41:50,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:41:50,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:41:50,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:41:50,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:41:50,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,336 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 96 [2023-11-29 01:41:50,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:41:50,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:41:50,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:41:50,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:41:50,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,376 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:41:50,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:41:50,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:41:50,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:41:50,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:41:50,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (1/1) ... [2023-11-29 01:41:50,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:41:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:50,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:41:50,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:41:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:41:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:41:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:41:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:41:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:41:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:41:50,539 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:41:50,541 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:41:50,780 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:41:50,824 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:41:50,824 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:41:50,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:41:50 BoogieIcfgContainer [2023-11-29 01:41:50,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:41:50,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:41:50,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:41:50,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:41:50,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:41:49" (1/3) ... [2023-11-29 01:41:50,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da655c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:41:50, skipping insertion in model container [2023-11-29 01:41:50,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:41:50" (2/3) ... [2023-11-29 01:41:50,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da655c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:41:50, skipping insertion in model container [2023-11-29 01:41:50,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:41:50" (3/3) ... [2023-11-29 01:41:50,837 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-58.i [2023-11-29 01:41:50,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:41:50,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:41:50,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:41:50,917 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;@1916262c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:41:50,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:41:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 01:41:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:41:50,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:50,933 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:50,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:41:50,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash 767506100, now seen corresponding path program 1 times [2023-11-29 01:41:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:41:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922017551] [2023-11-29 01:41:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:50,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:41:51,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:41:51,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399772695] [2023-11-29 01:41:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:51,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:51,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:41:51,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:41:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:51,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:41:51,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 182 proven. 27 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-29 01:41:52,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:41:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922017551] [2023-11-29 01:41:52,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:41:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399772695] [2023-11-29 01:41:52,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399772695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:52,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:41:52,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 01:41:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775574660] [2023-11-29 01:41:52,232 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:52,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:41:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:41:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:41:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:41:52,275 INFO L87 Difference]: Start difference. First operand has 39 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 01:41:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:53,266 INFO L93 Difference]: Finished difference Result 130 states and 223 transitions. [2023-11-29 01:41:53,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:41:53,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 77 [2023-11-29 01:41:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:53,276 INFO L225 Difference]: With dead ends: 130 [2023-11-29 01:41:53,276 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 01:41:53,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:41:53,284 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 119 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:53,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 211 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:41:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 01:41:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2023-11-29 01:41:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 01:41:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2023-11-29 01:41:53,345 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 77 [2023-11-29 01:41:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:53,347 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2023-11-29 01:41:53,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 01:41:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2023-11-29 01:41:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:41:53,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:53,352 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:53,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 01:41:53,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:41:53,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:41:53,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -41840526, now seen corresponding path program 1 times [2023-11-29 01:41:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:41:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456214082] [2023-11-29 01:41:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:53,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:41:53,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:41:53,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919623617] [2023-11-29 01:41:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:53,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:41:53,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:41:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:53,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:41:53,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-29 01:42:06,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:42:26,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:42:26,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456214082] [2023-11-29 01:42:26,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:42:26,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919623617] [2023-11-29 01:42:26,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919623617] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:26,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:42:26,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-29 01:42:26,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040441898] [2023-11-29 01:42:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:42:26,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:42:26,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:42:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:42:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:42:26,396 INFO L87 Difference]: Start difference. First operand 70 states and 97 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:42:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:27,084 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2023-11-29 01:42:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:42:27,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-11-29 01:42:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:27,087 INFO L225 Difference]: With dead ends: 107 [2023-11-29 01:42:27,087 INFO L226 Difference]: Without dead ends: 105 [2023-11-29 01:42:27,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:42:27,089 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 82 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:27,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 228 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:42:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-29 01:42:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 76. [2023-11-29 01:42:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 01:42:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2023-11-29 01:42:27,102 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 77 [2023-11-29 01:42:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:27,102 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2023-11-29 01:42:27,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:42:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2023-11-29 01:42:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:42:27,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:27,105 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:42:27,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:42:27,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:42:27,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:42:27,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash -41780944, now seen corresponding path program 1 times [2023-11-29 01:42:27,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:42:27,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594550100] [2023-11-29 01:42:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:27,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:42:27,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:42:27,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786894771] [2023-11-29 01:42:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:27,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:42:27,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:42:27,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:42:27,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:42:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:42:27,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:42:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:42:27,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:42:27,517 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:42:27,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:42:27,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:42:27,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:42:27,723 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 01:42:27,726 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:42:27,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:42:27 BoogieIcfgContainer [2023-11-29 01:42:27,790 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:42:27,790 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:42:27,790 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:42:27,791 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:42:27,791 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:41:50" (3/4) ... [2023-11-29 01:42:27,793 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 01:42:27,794 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:42:27,795 INFO L158 Benchmark]: Toolchain (without parser) took 37794.15ms. Allocated memory was 190.8MB in the beginning and 677.4MB in the end (delta: 486.5MB). Free memory was 146.0MB in the beginning and 398.1MB in the end (delta: -252.1MB). Peak memory consumption was 237.6MB. Max. memory is 16.1GB. [2023-11-29 01:42:27,796 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:42:27,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.50ms. Allocated memory is still 190.8MB. Free memory was 146.0MB in the beginning and 133.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 01:42:27,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.43ms. Allocated memory is still 190.8MB. Free memory was 133.8MB in the beginning and 130.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:42:27,797 INFO L158 Benchmark]: Boogie Preprocessor took 59.61ms. Allocated memory is still 190.8MB. Free memory was 130.8MB in the beginning and 127.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:42:27,797 INFO L158 Benchmark]: RCFGBuilder took 427.17ms. Allocated memory is still 190.8MB. Free memory was 127.1MB in the beginning and 109.2MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 01:42:27,798 INFO L158 Benchmark]: TraceAbstraction took 36959.92ms. Allocated memory was 190.8MB in the beginning and 677.4MB in the end (delta: 486.5MB). Free memory was 108.5MB in the beginning and 399.1MB in the end (delta: -290.6MB). Peak memory consumption was 197.8MB. Max. memory is 16.1GB. [2023-11-29 01:42:27,799 INFO L158 Benchmark]: Witness Printer took 4.16ms. Allocated memory is still 677.4MB. Free memory was 399.1MB in the beginning and 398.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:42:27,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.50ms. Allocated memory is still 190.8MB. Free memory was 146.0MB in the beginning and 133.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.43ms. Allocated memory is still 190.8MB. Free memory was 133.8MB in the beginning and 130.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.61ms. Allocated memory is still 190.8MB. Free memory was 130.8MB in the beginning and 127.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.17ms. Allocated memory is still 190.8MB. Free memory was 127.1MB in the beginning and 109.2MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 36959.92ms. Allocated memory was 190.8MB in the beginning and 677.4MB in the end (delta: 486.5MB). Free memory was 108.5MB in the beginning and 399.1MB in the end (delta: -290.6MB). Peak memory consumption was 197.8MB. Max. memory is 16.1GB. * Witness Printer took 4.16ms. Allocated memory is still 677.4MB. Free memory was 399.1MB in the beginning and 398.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 19]: 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 90. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 64; [L23] signed long int var_1_2 = 8; [L24] unsigned char var_1_3 = 25; [L25] unsigned char var_1_4 = 100; [L26] float var_1_5 = 99999999999.5; [L27] unsigned char var_1_6 = 4; [L28] float var_1_7 = 63.75; [L29] unsigned char var_1_9 = 0; [L30] unsigned char var_1_10 = 1; [L31] unsigned char last_1_var_1_1 = 64; [L32] unsigned char last_1_var_1_9 = 0; [L94] isInitial = 1 [L95] FCALL initially() [L96] COND TRUE 1 [L97] CALL updateLastVariables() [L86] last_1_var_1_1 = var_1_1 [L87] last_1_var_1_9 = var_1_9 [L97] RET updateLastVariables() [L98] CALL updateVariables() [L66] var_1_2 = __VERIFIER_nondet_long() [L67] CALL assume_abort_if_not(var_1_2 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L67] RET assume_abort_if_not(var_1_2 >= -2147483648) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L68] CALL assume_abort_if_not(var_1_2 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L68] RET assume_abort_if_not(var_1_2 <= 2147483647) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=25, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L69] var_1_3 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L70] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L71] CALL assume_abort_if_not(var_1_3 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L71] RET assume_abort_if_not(var_1_3 <= 254) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=100, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L72] var_1_4 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_4 >= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L73] RET assume_abort_if_not(var_1_4 >= 63) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L74] CALL assume_abort_if_not(var_1_4 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L74] RET assume_abort_if_not(var_1_4 <= 127) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=4, var_1_7=255/4, var_1_9=0] [L75] var_1_6 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L76] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L77] CALL assume_abort_if_not(var_1_6 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L77] RET assume_abort_if_not(var_1_6 <= 255) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_7=255/4, var_1_9=0] [L78] CALL assume_abort_if_not(var_1_6 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_7=255/4, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_7=255/4, var_1_9=0] [L78] RET assume_abort_if_not(var_1_6 != 0) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_7=255/4, var_1_9=0] [L79] var_1_7 = __VERIFIER_nondet_float() [L80] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L80] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L81] var_1_10 = __VERIFIER_nondet_uchar() [L82] CALL assume_abort_if_not(var_1_10 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L82] RET assume_abort_if_not(var_1_10 >= 1) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L83] CALL assume_abort_if_not(var_1_10 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L83] RET assume_abort_if_not(var_1_10 <= 1) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L98] RET updateVariables() [L99] CALL step() [L36] signed long int stepLocal_3 = last_1_var_1_1; [L37] signed long int stepLocal_2 = var_1_3 / var_1_6; VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_2=63, stepLocal_3=64, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L38] COND TRUE var_1_3 < stepLocal_3 VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_2=63, stepLocal_3=64, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L39] COND FALSE !(var_1_4 < stepLocal_2) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_2=63, stepLocal_3=64, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L49] signed long int stepLocal_1 = var_1_2; [L50] signed long int stepLocal_0 = var_1_2; VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, stepLocal_1=-256, stepLocal_2=63, stepLocal_3=64, var_1_10=1, var_1_1=64, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L51] COND TRUE stepLocal_1 <= -256 [L52] var_1_1 = ((((var_1_3) < (((var_1_4 - 8) + 5))) ? (var_1_3) : (((var_1_4 - 8) + 5)))) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, stepLocal_1=-256, stepLocal_2=63, stepLocal_3=64, var_1_10=1, var_1_1=63, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L60] unsigned char stepLocal_4 = (var_1_1 + 64u) != var_1_4; VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, stepLocal_1=-256, stepLocal_2=63, stepLocal_3=64, stepLocal_4=0, var_1_10=1, var_1_1=63, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L61] COND FALSE !((var_1_5 >= var_1_7) || stepLocal_4) VAL [isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, stepLocal_0=-256, stepLocal_1=-256, stepLocal_2=63, stepLocal_3=64, stepLocal_4=0, var_1_10=1, var_1_1=63, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L99] RET step() [L100] CALL, EXPR property() [L90-L91] return (((var_1_2 <= -256) ? (var_1_1 == ((unsigned char) ((((var_1_3) < (((var_1_4 - 8) + 5))) ? (var_1_3) : (((var_1_4 - 8) + 5)))))) : ((var_1_4 <= var_1_2) ? (var_1_1 == ((unsigned char) var_1_3)) : (var_1_1 == ((unsigned char) var_1_3)))) && ((var_1_3 < last_1_var_1_1) ? ((var_1_4 < (var_1_3 / var_1_6)) ? (var_1_5 == ((float) (var_1_7 - 16.55f))) : 1) : (last_1_var_1_9 ? (var_1_5 == ((float) var_1_7)) : (var_1_5 == ((float) var_1_7))))) && (((var_1_5 >= var_1_7) || ((var_1_1 + 64u) != var_1_4)) ? (var_1_9 == ((unsigned char) var_1_10)) : 1) ; [L100] RET, EXPR property() [L100] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=63, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=64, last_1_var_1_9=0, var_1_10=1, var_1_1=63, var_1_2=-256, var_1_3=63, var_1_4=127, var_1_5=199999999999/2, var_1_6=1, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.8s, OverallIterations: 3, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 201 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 439 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 369 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 371 IncrementalHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 70 mSDtfsCounter, 371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 51 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 33.7s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 228 ConstructedInterpolants, 2 QuantifiedInterpolants, 1727 SizeOfPredicates, 27 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 738/792 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 [2023-11-29 01:42:27,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya --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 9c42f4f2be0dcf024bccd221a1bf3d1e29db98dcd801b03fa6d425f50f1c2522 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:42:29,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:42:29,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 01:42:29,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:42:29,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:42:30,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:42:30,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:42:30,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:42:30,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:42:30,019 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:42:30,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:42:30,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:42:30,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:42:30,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:42:30,022 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:42:30,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:42:30,024 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:42:30,024 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:42:30,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:42:30,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:42:30,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:42:30,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:42:30,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:42:30,028 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:42:30,028 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:42:30,029 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:42:30,029 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:42:30,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:42:30,030 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:42:30,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:42:30,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:42:30,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:42:30,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:42:30,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:42:30,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:42:30,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:42:30,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:42:30,033 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:42:30,033 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:42:30,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:42:30,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:42:30,034 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:42:30,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:42:30,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:42:30,035 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:42:30,035 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_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c42f4f2be0dcf024bccd221a1bf3d1e29db98dcd801b03fa6d425f50f1c2522 [2023-11-29 01:42:30,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:42:30,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:42:30,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:42:30,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:42:30,372 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:42:30,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i [2023-11-29 01:42:33,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:42:33,531 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:42:33,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i [2023-11-29 01:42:33,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data/d2604ac2b/42ed34ae1d5f40918b19ad3c2b8d7da0/FLAG2bd519619 [2023-11-29 01:42:33,563 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/data/d2604ac2b/42ed34ae1d5f40918b19ad3c2b8d7da0 [2023-11-29 01:42:33,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:42:33,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:42:33,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:42:33,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:42:33,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:42:33,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:33,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f03a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33, skipping insertion in model container [2023-11-29 01:42:33,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:33,608 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:42:33,793 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_c7b809cf-1399-4700-a942-7fc6dfffc089/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i[915,928] [2023-11-29 01:42:33,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:42:33,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:42:33,889 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_c7b809cf-1399-4700-a942-7fc6dfffc089/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-58.i[915,928] [2023-11-29 01:42:33,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:42:33,933 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:42:33,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33 WrapperNode [2023-11-29 01:42:33,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:42:33,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:42:33,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:42:33,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:42:33,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:33,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:33,986 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-11-29 01:42:33,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:42:33,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:42:33,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:42:33,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:42:33,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:33,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,019 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:42:34,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:42:34,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:42:34,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:42:34,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:42:34,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (1/1) ... [2023-11-29 01:42:34,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:42:34,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:42:34,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:42:34,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:42:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:42:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:42:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:42:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:42:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:42:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:42:34,222 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:42:34,226 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:42:34,781 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:42:34,837 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:42:34,837 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:42:34,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:42:34 BoogieIcfgContainer [2023-11-29 01:42:34,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:42:34,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:42:34,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:42:34,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:42:34,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:42:33" (1/3) ... [2023-11-29 01:42:34,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d69fbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:42:34, skipping insertion in model container [2023-11-29 01:42:34,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:42:33" (2/3) ... [2023-11-29 01:42:34,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d69fbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:42:34, skipping insertion in model container [2023-11-29 01:42:34,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:42:34" (3/3) ... [2023-11-29 01:42:34,849 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-58.i [2023-11-29 01:42:34,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:42:34,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:42:34,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:42:34,941 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;@6348f331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:42:34,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:42:34,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 01:42:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:42:34,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:34,960 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:42:34,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:42:34,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash 767506100, now seen corresponding path program 1 times [2023-11-29 01:42:34,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:42:34,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416257587] [2023-11-29 01:42:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:34,983 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 [2023-11-29 01:42:34,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:42:34,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:42:34,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:42:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:35,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:42:35,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 01:42:37,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:57,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:42:57,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416257587] [2023-11-29 01:42:57,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416257587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:57,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380796729] [2023-11-29 01:42:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:57,838 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:42:57,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:42:57,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:42:57,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-29 01:42:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:58,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:42:58,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:43:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-29 01:43:31,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:03,267 WARN L293 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 95 DAG size of output: 94 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:44:19,987 WARN L293 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:46:09,064 WARN L293 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:46:27,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380796729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:27,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:46:27,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 01:46:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658515782] [2023-11-29 01:46:27,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:27,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:46:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:46:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:46:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1675, Unknown=1, NotChecked=0, Total=1892 [2023-11-29 01:46:27,956 INFO L87 Difference]: Start difference. First operand has 39 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:47:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:33,956 INFO L93 Difference]: Finished difference Result 147 states and 243 transitions. [2023-11-29 01:47:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:47:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 77 [2023-11-29 01:47:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:33,980 INFO L225 Difference]: With dead ends: 147 [2023-11-29 01:47:33,980 INFO L226 Difference]: Without dead ends: 109 [2023-11-29 01:47:33,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 212.8s TimeCoverageRelationStatistics Valid=743, Invalid=4086, Unknown=1, NotChecked=0, Total=4830 [2023-11-29 01:47:33,988 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 226 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:33,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 314 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-29 01:47:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-29 01:47:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2023-11-29 01:47:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 01:47:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2023-11-29 01:47:34,055 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 77 [2023-11-29 01:47:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:34,058 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2023-11-29 01:47:34,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:47:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2023-11-29 01:47:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:47:34,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:34,063 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:47:34,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-29 01:47:34,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:47:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:47:34,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:34,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -41840526, now seen corresponding path program 1 times [2023-11-29 01:47:34,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:47:34,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745681368] [2023-11-29 01:47:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:34,466 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 [2023-11-29 01:47:34,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:47:34,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:47:34,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (4)] Waiting until timeout for monitored process [2023-11-29 01:47:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:34,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:47:34,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 01:47:46,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:48:07,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:48:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745681368] [2023-11-29 01:48:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745681368] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:48:07,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:48:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 27 [2023-11-29 01:48:07,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753755190] [2023-11-29 01:48:07,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:07,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:48:07,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:48:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:48:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:48:07,052 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:48:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:15,155 INFO L93 Difference]: Finished difference Result 119 states and 152 transitions. [2023-11-29 01:48:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:48:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-11-29 01:48:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:15,168 INFO L225 Difference]: With dead ends: 119 [2023-11-29 01:48:15,168 INFO L226 Difference]: Without dead ends: 117 [2023-11-29 01:48:15,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:48:15,171 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 69 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:15,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 220 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 01:48:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-29 01:48:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2023-11-29 01:48:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 01:48:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2023-11-29 01:48:15,191 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 77 [2023-11-29 01:48:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:15,192 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2023-11-29 01:48:15,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:48:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2023-11-29 01:48:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:48:15,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:15,195 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:15,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (4)] Ended with exit code 0 [2023-11-29 01:48:15,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:48:15,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:15,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash -41780944, now seen corresponding path program 1 times [2023-11-29 01:48:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:48:15,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752711687] [2023-11-29 01:48:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:15,397 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 [2023-11-29 01:48:15,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:48:15,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:48:15,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (5)] Waiting until timeout for monitored process [2023-11-29 01:48:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:15,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:48:15,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 177 proven. 24 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-29 01:48:27,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:51,043 WARN L293 SmtUtils]: Spent 52.00s on a formula simplification. DAG size of input: 102 DAG size of output: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:49:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:49:58,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:49:58,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752711687] [2023-11-29 01:49:58,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752711687] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:49:58,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:49:58,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2023-11-29 01:49:58,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690248894] [2023-11-29 01:49:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:58,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:49:58,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:49:58,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:49:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:49:58,270 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:50:30,072 WARN L293 SmtUtils]: Spent 28.45s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:50:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:32,548 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2023-11-29 01:50:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:50:32,558 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-11-29 01:50:32,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:32,561 INFO L225 Difference]: With dead ends: 115 [2023-11-29 01:50:32,561 INFO L226 Difference]: Without dead ends: 113 [2023-11-29 01:50:32,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 97.1s TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:50:32,563 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 72 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:32,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 268 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 01:50:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-29 01:50:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 91. [2023-11-29 01:50:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 01:50:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2023-11-29 01:50:32,583 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 77 [2023-11-29 01:50:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:32,584 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2023-11-29 01:50:32,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:50:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2023-11-29 01:50:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:50:32,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:32,586 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:50:32,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (5)] Ended with exit code 0 [2023-11-29 01:50:32,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:50:32,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:32,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash 250353076, now seen corresponding path program 1 times [2023-11-29 01:50:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:50:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620058365] [2023-11-29 01:50:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:32,789 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 [2023-11-29 01:50:32,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:50:32,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:50:32,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (6)] Waiting until timeout for monitored process [2023-11-29 01:50:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:32,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:50:32,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:50:33,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:50:33,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:50:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620058365] [2023-11-29 01:50:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620058365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:33,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:50:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218935953] [2023-11-29 01:50:33,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:33,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:50:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:50:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:50:33,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:50:33,208 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:50:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:33,590 INFO L93 Difference]: Finished difference Result 194 states and 267 transitions. [2023-11-29 01:50:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:50:33,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-11-29 01:50:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:33,603 INFO L225 Difference]: With dead ends: 194 [2023-11-29 01:50:33,604 INFO L226 Difference]: Without dead ends: 149 [2023-11-29 01:50:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:50:33,605 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 52 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:33,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 161 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:50:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-29 01:50:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2023-11-29 01:50:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 89 states have (on average 1.247191011235955) internal successors, (111), 89 states have internal predecessors, (111), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 01:50:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2023-11-29 01:50:33,624 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 77 [2023-11-29 01:50:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:33,624 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2023-11-29 01:50:33,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:50:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2023-11-29 01:50:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:50:33,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:33,626 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:50:33,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (6)] Ended with exit code 0 [2023-11-29 01:50:33,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:50:33,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:33,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash -558993550, now seen corresponding path program 1 times [2023-11-29 01:50:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:50:33,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072294878] [2023-11-29 01:50:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:33,828 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 [2023-11-29 01:50:33,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:50:33,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:50:33,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (7)] Waiting until timeout for monitored process [2023-11-29 01:50:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:33,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:50:33,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-29 01:50:44,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:20,162 WARN L293 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 99 DAG size of output: 98 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:52:37,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:52:37,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072294878] [2023-11-29 01:52:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072294878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:52:37,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1094682082] [2023-11-29 01:52:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:37,248 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:52:37,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:52:37,249 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:52:37,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-29 01:52:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:37,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:52:37,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:53:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-29 01:53:16,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:00,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1094682082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:00,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:54:00,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-29 01:54:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204352691] [2023-11-29 01:54:00,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:00,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:54:00,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:54:00,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:54:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:54:00,781 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 01:54:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:24,004 INFO L93 Difference]: Finished difference Result 263 states and 363 transitions. [2023-11-29 01:54:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:54:24,015 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 77 [2023-11-29 01:54:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:24,018 INFO L225 Difference]: With dead ends: 263 [2023-11-29 01:54:24,018 INFO L226 Difference]: Without dead ends: 175 [2023-11-29 01:54:24,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 127.6s TimeCoverageRelationStatistics Valid=446, Invalid=1810, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:54:24,022 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 127 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:24,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 345 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:54:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-29 01:54:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 142. [2023-11-29 01:54:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 97 states have internal predecessors, (121), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 01:54:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 193 transitions. [2023-11-29 01:54:24,049 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 193 transitions. Word has length 77 [2023-11-29 01:54:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:24,050 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 193 transitions. [2023-11-29 01:54:24,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 01:54:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 193 transitions. [2023-11-29 01:54:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:54:24,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:24,053 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:24,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (7)] Ended with exit code 0 [2023-11-29 01:54:24,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-11-29 01:54:24,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:54:24,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:24,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash 358896626, now seen corresponding path program 1 times [2023-11-29 01:54:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:54:24,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115534434] [2023-11-29 01:54:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:24,460 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 [2023-11-29 01:54:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:54:24,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:54:24,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (9)] Waiting until timeout for monitored process [2023-11-29 01:54:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:24,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:54:24,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 01:54:43,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:55:07,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:55:07,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115534434] [2023-11-29 01:55:07,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115534434] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:07,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:55:07,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 27 [2023-11-29 01:55:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076934635] [2023-11-29 01:55:07,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:07,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:55:07,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:55:07,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:55:07,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:55:07,517 INFO L87 Difference]: Start difference. First operand 142 states and 193 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:55:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:16,758 INFO L93 Difference]: Finished difference Result 196 states and 259 transitions. [2023-11-29 01:55:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:55:16,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2023-11-29 01:55:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:16,772 INFO L225 Difference]: With dead ends: 196 [2023-11-29 01:55:16,772 INFO L226 Difference]: Without dead ends: 194 [2023-11-29 01:55:16,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:55:16,774 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 73 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:16,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 178 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 01:55:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-29 01:55:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 142. [2023-11-29 01:55:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 97 states have internal predecessors, (121), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 01:55:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 193 transitions. [2023-11-29 01:55:16,798 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 193 transitions. Word has length 78 [2023-11-29 01:55:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:16,799 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 193 transitions. [2023-11-29 01:55:16,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:55:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 193 transitions. [2023-11-29 01:55:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:55:16,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:16,801 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:16,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (9)] Ended with exit code 0 [2023-11-29 01:55:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:55:17,002 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:17,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash 416154928, now seen corresponding path program 1 times [2023-11-29 01:55:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:55:17,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308670072] [2023-11-29 01:55:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:17,003 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 [2023-11-29 01:55:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:55:17,003 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:55:17,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (10)] Waiting until timeout for monitored process [2023-11-29 01:55:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:17,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:55:17,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 01:55:28,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:55:53,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:55:53,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308670072] [2023-11-29 01:55:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308670072] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:53,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:55:53,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 29 [2023-11-29 01:55:53,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491307623] [2023-11-29 01:55:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:53,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:55:53,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:55:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:55:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:55:53,494 INFO L87 Difference]: Start difference. First operand 142 states and 193 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:56:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:03,244 INFO L93 Difference]: Finished difference Result 192 states and 255 transitions. [2023-11-29 01:56:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:56:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2023-11-29 01:56:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:03,257 INFO L225 Difference]: With dead ends: 192 [2023-11-29 01:56:03,257 INFO L226 Difference]: Without dead ends: 190 [2023-11-29 01:56:03,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=256, Invalid=1076, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:56:03,259 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 69 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:03,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 220 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 01:56:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-29 01:56:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 138. [2023-11-29 01:56:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 93 states have internal predecessors, (115), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 01:56:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2023-11-29 01:56:03,280 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 78 [2023-11-29 01:56:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:03,281 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2023-11-29 01:56:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 01:56:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2023-11-29 01:56:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:56:03,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:03,282 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:03,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (10)] Forceful destruction successful, exit code 0 [2023-11-29 01:56:03,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 01:56:03,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:03,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1507022066, now seen corresponding path program 1 times [2023-11-29 01:56:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:56:03,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654175225] [2023-11-29 01:56:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:03,484 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 [2023-11-29 01:56:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:56:03,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 01:56:03,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7b809cf-1399-4700-a942-7fc6dfffc089/bin/uautomizer-verify-BQ2R08f2Ya/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 (11)] Waiting until timeout for monitored process [2023-11-29 01:56:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:56:03,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:56:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-29 01:56:21,229 INFO L327 TraceCheckSpWp]: Computing backward predicates...