./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme --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 39a407deab3a4246189c08648d528f65ba8317503440791fad31b3eeb9a40e8c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:48,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:48,427 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:48,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:48,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:48,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:48,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:48,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:48,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:48,487 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:48,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:48,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:48,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:48,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:48,491 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:48,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:48,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:48,493 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:48,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:48,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:48,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:48,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:48,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:48,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:48,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:48,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:48,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:48,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:48,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:48,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:48,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:48,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:48,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:48,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:48,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:48,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:48,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:48,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:48,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:48,503 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:48,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:48,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:48,504 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_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39a407deab3a4246189c08648d528f65ba8317503440791fad31b3eeb9a40e8c [2023-11-26 10:44:48,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:48,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:48,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:48,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:48,892 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:48,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i [2023-11-26 10:44:52,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:52,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:52,269 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i [2023-11-26 10:44:52,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data/26feb0b9d/cb5e210f366a476bace5ef211f0f6406/FLAG170411d1e [2023-11-26 10:44:52,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data/26feb0b9d/cb5e210f366a476bace5ef211f0f6406 [2023-11-26 10:44:52,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:52,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:52,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:52,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:52,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:52,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ee3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52, skipping insertion in model container [2023-11-26 10:44:52,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,341 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:52,547 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_4a456770-fa9c-40a4-9c09-4eff10124ad8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i[915,928] [2023-11-26 10:44:52,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:52,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:52,659 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_4a456770-fa9c-40a4-9c09-4eff10124ad8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i[915,928] [2023-11-26 10:44:52,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:52,712 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:52,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52 WrapperNode [2023-11-26 10:44:52,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:52,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:52,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:52,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:52,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,804 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 99 [2023-11-26 10:44:52,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:52,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:52,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:52,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:52,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,851 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]. [2023-11-26 10:44:52,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:52,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:52,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:52,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:52,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (1/1) ... [2023-11-26 10:44:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:52,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:52,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:52,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:44:52,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:44:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:52,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:53,093 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:53,096 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:53,517 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:53,582 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:53,582 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:44:53,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:53 BoogieIcfgContainer [2023-11-26 10:44:53,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:53,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:53,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:53,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:53,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:52" (1/3) ... [2023-11-26 10:44:53,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec14057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:53, skipping insertion in model container [2023-11-26 10:44:53,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:52" (2/3) ... [2023-11-26 10:44:53,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec14057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:53, skipping insertion in model container [2023-11-26 10:44:53,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:53" (3/3) ... [2023-11-26 10:44:53,593 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-83.i [2023-11-26 10:44:53,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:53,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:53,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:53,697 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;@34f3be4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:53,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 10:44:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 10:44:53,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:53,715 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1] [2023-11-26 10:44:53,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:53,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:53,720 INFO L85 PathProgramCache]: Analyzing trace with hash 43849795, now seen corresponding path program 1 times [2023-11-26 10:44:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:53,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682163166] [2023-11-26 10:44:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:54,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682163166] [2023-11-26 10:44:54,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:44:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644411444] [2023-11-26 10:44:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:54,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:54,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:54,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:54,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:44:54,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-26 10:44:54,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:54,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644411444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:54,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:54,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542975926] [2023-11-26 10:44:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:54,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:54,258 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 10:44:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:54,294 INFO L93 Difference]: Finished difference Result 75 states and 131 transitions. [2023-11-26 10:44:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:54,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2023-11-26 10:44:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:54,305 INFO L225 Difference]: With dead ends: 75 [2023-11-26 10:44:54,306 INFO L226 Difference]: Without dead ends: 37 [2023-11-26 10:44:54,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:54,316 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:54,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-26 10:44:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-26 10:44:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 10:44:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2023-11-26 10:44:54,377 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 90 [2023-11-26 10:44:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:54,378 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2023-11-26 10:44:54,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 10:44:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2023-11-26 10:44:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 10:44:54,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:54,386 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1] [2023-11-26 10:44:54,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:44:54,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:54,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:54,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash -756259331, now seen corresponding path program 1 times [2023-11-26 10:44:54,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:54,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201454128] [2023-11-26 10:44:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:54,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:54,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:54,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884986547] [2023-11-26 10:44:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:54,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:54,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:54,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:54,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:44:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:54,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:55,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:55,076 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:44:55,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 10:44:55,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:55,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:55,289 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 10:44:55,293 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:44:55,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:44:55 BoogieIcfgContainer [2023-11-26 10:44:55,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:44:55,395 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:44:55,395 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:44:55,395 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:44:55,396 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:53" (3/4) ... [2023-11-26 10:44:55,398 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:44:55,400 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:44:55,402 INFO L158 Benchmark]: Toolchain (without parser) took 3099.79ms. Allocated memory is still 203.4MB. Free memory was 156.6MB in the beginning and 125.2MB in the end (delta: 31.4MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2023-11-26 10:44:55,403 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 203.4MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:55,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.85ms. Allocated memory is still 203.4MB. Free memory was 156.4MB in the beginning and 143.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:44:55,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.37ms. Allocated memory is still 203.4MB. Free memory was 143.7MB in the beginning and 140.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:55,405 INFO L158 Benchmark]: Boogie Preprocessor took 73.68ms. Allocated memory is still 203.4MB. Free memory was 140.5MB in the beginning and 135.2MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:55,405 INFO L158 Benchmark]: RCFGBuilder took 703.29ms. Allocated memory is still 203.4MB. Free memory was 135.2MB in the beginning and 115.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 10:44:55,406 INFO L158 Benchmark]: TraceAbstraction took 1808.60ms. Allocated memory is still 203.4MB. Free memory was 115.1MB in the beginning and 126.0MB in the end (delta: -10.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:55,406 INFO L158 Benchmark]: Witness Printer took 4.78ms. Allocated memory is still 203.4MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:55,409 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 203.4MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.85ms. Allocated memory is still 203.4MB. Free memory was 156.4MB in the beginning and 143.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.37ms. Allocated memory is still 203.4MB. Free memory was 143.7MB in the beginning and 140.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.68ms. Allocated memory is still 203.4MB. Free memory was 140.5MB in the beginning and 135.2MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 703.29ms. Allocated memory is still 203.4MB. Free memory was 135.2MB in the beginning and 115.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1808.60ms. Allocated memory is still 203.4MB. Free memory was 115.1MB in the beginning and 126.0MB in the end (delta: -10.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.78ms. Allocated memory is still 203.4MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 someBinaryDOUBLEComparisonOperation at line 83, overapproximation of someBinaryArithmeticDOUBLEoperation at line 50. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 128; [L23] unsigned char var_1_2 = 0; [L24] unsigned short int var_1_3 = 25; [L25] unsigned char var_1_4 = 4; [L26] double var_1_8 = 49.8; [L27] double var_1_9 = 127.8; [L28] double var_1_10 = 7.2; [L29] signed char var_1_11 = -1; [L30] signed char var_1_12 = 2; [L31] signed char var_1_13 = 4; [L32] signed char var_1_14 = 16; [L33] unsigned short int var_1_15 = 0; [L87] isInitial = 1 [L88] FCALL initially() [L89] COND TRUE 1 [L90] FCALL updateLastVariables() [L91] CALL updateVariables() [L56] var_1_2 = __VERIFIER_nondet_uchar() [L57] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L57] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L58] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L58] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L59] var_1_3 = __VERIFIER_nondet_ushort() [L60] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L60] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L61] CALL assume_abort_if_not(var_1_3 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L61] RET assume_abort_if_not(var_1_3 <= 65534) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=4, var_1_8=249/5, var_1_9=639/5] [L62] var_1_4 = __VERIFIER_nondet_uchar() [L63] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_8=249/5, var_1_9=639/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_8=249/5, var_1_9=639/5] [L63] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_8=249/5, var_1_9=639/5] [L64] CALL assume_abort_if_not(var_1_4 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_8=249/5, var_1_9=639/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_8=249/5, var_1_9=639/5] [L64] RET assume_abort_if_not(var_1_4 <= 255) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_8=249/5, var_1_9=639/5] [L65] CALL assume_abort_if_not(var_1_4 != 0) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5, var_1_9=639/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5, var_1_9=639/5] [L65] RET assume_abort_if_not(var_1_4 != 0) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5, var_1_9=639/5] [L66] var_1_9 = __VERIFIER_nondet_double() [L67] CALL assume_abort_if_not((var_1_9 >= -461168.6018427382800e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 4611686.018427382800e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L67] RET assume_abort_if_not((var_1_9 >= -461168.6018427382800e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 4611686.018427382800e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=36/5, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L68] var_1_10 = __VERIFIER_nondet_double() [L69] CALL assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L69] RET assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, var_1_11=-1, var_1_12=2, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L70] var_1_12 = __VERIFIER_nondet_char() [L71] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L71] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L72] CALL assume_abort_if_not(var_1_12 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L72] RET assume_abort_if_not(var_1_12 <= 63) VAL [isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=4, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L73] var_1_13 = __VERIFIER_nondet_char() [L74] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L74] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L75] CALL assume_abort_if_not(var_1_13 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L75] RET assume_abort_if_not(var_1_13 <= 63) VAL [isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=16, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L76] var_1_14 = __VERIFIER_nondet_char() [L77] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L77] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L78] CALL assume_abort_if_not(var_1_14 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L78] RET assume_abort_if_not(var_1_14 <= 126) VAL [isInitial=1, var_1_11=-1, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=0, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L91] RET updateVariables() [L92] CALL step() [L37] var_1_11 = ((var_1_12 + var_1_13) - ((((25) < (var_1_14)) ? (25) : (var_1_14)))) [L38] var_1_15 = var_1_14 [L39] signed long int stepLocal_0 = var_1_3 / var_1_4; VAL [isInitial=1, stepLocal_0=0, var_1_11=0, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=25, var_1_1=128, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L40] COND TRUE \read(var_1_2) [L41] var_1_1 = (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))) VAL [isInitial=1, stepLocal_0=0, var_1_11=0, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=25, var_1_1=1, var_1_2=1, var_1_3=1, var_1_4=2, var_1_8=249/5] [L49] COND TRUE var_1_11 >= ((var_1_3 / var_1_4) + (var_1_1 * var_1_11)) [L50] var_1_8 = (var_1_9 + ((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10)))) VAL [isInitial=1, stepLocal_0=0, var_1_11=0, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=25, var_1_1=1, var_1_2=1, var_1_3=1, var_1_4=2] [L92] RET step() [L93] CALL, EXPR property() [L83-L84] return (((var_1_2 ? (var_1_1 == ((unsigned short int) (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))))) : (((var_1_3 / var_1_4) >= (((((var_1_15 * var_1_15)) < (var_1_11)) ? ((var_1_15 * var_1_15)) : (var_1_11)))) ? (var_1_1 == ((unsigned short int) var_1_4)) : (var_1_1 == ((unsigned short int) 5)))) && ((var_1_11 >= ((var_1_3 / var_1_4) + (var_1_1 * var_1_11))) ? (var_1_8 == ((double) (var_1_9 + ((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10)))))) : (var_1_8 == ((double) var_1_9)))) && (var_1_11 == ((signed char) ((var_1_12 + var_1_13) - ((((25) < (var_1_14)) ? (25) : (var_1_14))))))) && (var_1_15 == ((unsigned short int) var_1_14)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=0, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=25, var_1_1=1, var_1_2=1, var_1_3=1, var_1_4=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=0, var_1_12=0, var_1_13=25, var_1_14=25, var_1_15=25, var_1_1=1, var_1_2=1, var_1_3=1, var_1_4=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 15, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 51 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 216 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 420/420 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 [2023-11-26 10:44:55,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme --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 39a407deab3a4246189c08648d528f65ba8317503440791fad31b3eeb9a40e8c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:58,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:58,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 10:44:58,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:58,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:58,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:58,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:58,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:58,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:58,488 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:58,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:58,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:58,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:58,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:58,492 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:58,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:58,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:58,494 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:58,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:58,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:58,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:58,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:58,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:58,497 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:44:58,497 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:44:58,498 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:44:58,498 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:58,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:58,499 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:58,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:58,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:58,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:58,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:58,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:58,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:58,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:58,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:58,504 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:44:58,505 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:44:58,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:58,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:58,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:58,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:58,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:58,507 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:44:58,507 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_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39a407deab3a4246189c08648d528f65ba8317503440791fad31b3eeb9a40e8c [2023-11-26 10:44:58,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:58,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:58,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:58,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:58,991 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:58,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i [2023-11-26 10:45:02,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:02,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:02,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i [2023-11-26 10:45:02,510 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data/789cd8e97/614832f66d224ae4a557d54560eee4e6/FLAGee272bdca [2023-11-26 10:45:02,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/data/789cd8e97/614832f66d224ae4a557d54560eee4e6 [2023-11-26 10:45:02,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:02,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:02,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:02,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:02,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:02,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:02,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bba3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02, skipping insertion in model container [2023-11-26 10:45:02,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:02,588 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:02,786 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_4a456770-fa9c-40a4-9c09-4eff10124ad8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i[915,928] [2023-11-26 10:45:02,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:02,886 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:02,903 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_4a456770-fa9c-40a4-9c09-4eff10124ad8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-83.i[915,928] [2023-11-26 10:45:02,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:02,957 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:02,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02 WrapperNode [2023-11-26 10:45:02,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:02,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:02,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:02,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:02,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:02,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,032 INFO L138 Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 96 [2023-11-26 10:45:03,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:03,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:03,035 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:03,035 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:03,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,085 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]. [2023-11-26 10:45:03,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:03,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:03,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:03,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:03,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (1/1) ... [2023-11-26 10:45:03,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:03,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:03,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:03,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 10:45:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:45:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:45:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:03,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:03,393 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:03,396 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:04,400 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:04,457 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:04,457 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:45:04,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:04 BoogieIcfgContainer [2023-11-26 10:45:04,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:04,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:04,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:04,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:04,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:02" (1/3) ... [2023-11-26 10:45:04,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc8d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:04, skipping insertion in model container [2023-11-26 10:45:04,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:02" (2/3) ... [2023-11-26 10:45:04,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc8d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:04, skipping insertion in model container [2023-11-26 10:45:04,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:04" (3/3) ... [2023-11-26 10:45:04,468 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-83.i [2023-11-26 10:45:04,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:04,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:45:04,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:04,552 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;@1a2df407, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:04,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:45:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 10:45:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 10:45:04,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:04,572 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1] [2023-11-26 10:45:04,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:04,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:04,578 INFO L85 PathProgramCache]: Analyzing trace with hash 43849795, now seen corresponding path program 1 times [2023-11-26 10:45:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:45:04,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011933823] [2023-11-26 10:45:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:04,592 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 [2023-11-26 10:45:04,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:45:04,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 10:45:04,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 10:45:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:04,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:45:04,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-26 10:45:04,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:04,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:45:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011933823] [2023-11-26 10:45:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011933823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:04,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:04,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:04,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770764714] [2023-11-26 10:45:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:45:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:45:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:45:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:45:05,017 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 10:45:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:05,404 INFO L93 Difference]: Finished difference Result 75 states and 131 transitions. [2023-11-26 10:45:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:45:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2023-11-26 10:45:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:05,426 INFO L225 Difference]: With dead ends: 75 [2023-11-26 10:45:05,427 INFO L226 Difference]: Without dead ends: 37 [2023-11-26 10:45:05,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:45:05,434 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:05,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:45:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-26 10:45:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-26 10:45:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 10:45:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2023-11-26 10:45:05,482 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 90 [2023-11-26 10:45:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:05,482 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2023-11-26 10:45:05,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 10:45:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2023-11-26 10:45:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 10:45:05,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:05,488 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1] [2023-11-26 10:45:05,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 10:45:05,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 10:45:05,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:05,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -756259331, now seen corresponding path program 1 times [2023-11-26 10:45:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:45:05,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236375466] [2023-11-26 10:45:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:05,707 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 [2023-11-26 10:45:05,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:45:05,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 10:45:05,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a456770-fa9c-40a4-9c09-4eff10124ad8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 10:45:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:06,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 10:45:06,071 INFO L285 TraceCheckSpWp]: Computing forward predicates...