./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.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_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9be54bf039b1b69bac47621c18caa89883f4e5db7b74fe4f3e62990547785f77 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:39:34,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:39:34,837 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-12-03 03:39:34,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 03:39:34,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 03:39:34,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:39:34,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 03:39:34,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 03:39:34,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:39:34,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:39:34,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:39:34,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 03:39:34,872 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 03:39:34,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 03:39:34,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 03:39:34,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:39:34,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 03:39:34,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:39:34,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 03:39:34,876 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 03:39:34,876 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 03:39:34,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:39:34,878 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:39:34,878 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:39:34,879 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:39:34,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:39:34,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:39:34,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:39:34,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:39:34,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 03:39:34,881 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 03:39:34,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 03:39:34,882 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 03:39:34,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be54bf039b1b69bac47621c18caa89883f4e5db7b74fe4f3e62990547785f77 [2023-12-03 03:39:35,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:39:35,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:39:35,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:39:35,132 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:39:35,132 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:39:35,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i [2023-12-03 03:39:37,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:39:38,061 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:39:38,061 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i [2023-12-03 03:39:38,070 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data/0994f0d08/7a40ae7476624f0cb5bba6158bb34bca/FLAG244bfe543 [2023-12-03 03:39:38,083 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data/0994f0d08/7a40ae7476624f0cb5bba6158bb34bca [2023-12-03 03:39:38,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:39:38,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:39:38,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:39:38,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:39:38,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:39:38,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789600ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38, skipping insertion in model container [2023-12-03 03:39:38,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:39:38,239 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_552b55cd-19f1-4638-bc5f-73e577da3425/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i[915,928] [2023-12-03 03:39:38,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:39:38,296 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:39:38,310 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_552b55cd-19f1-4638-bc5f-73e577da3425/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i[915,928] [2023-12-03 03:39:38,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:39:38,346 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:39:38,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38 WrapperNode [2023-12-03 03:39:38,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:39:38,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:39:38,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:39:38,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:39:38,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,394 INFO L138 Inliner]: procedures = 26, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2023-12-03 03:39:38,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:39:38,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:39:38,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:39:38,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:39:38,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:39:38,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:39:38,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:39:38,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:39:38,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:39:38,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:39:38,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:39:38,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:39:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:39:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-03 03:39:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-03 03:39:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 03:39:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:39:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:39:38,592 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:39:38,594 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:39:38,806 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:39:38,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:39:38,925 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 03:39:38,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:39:38 BoogieIcfgContainer [2023-12-03 03:39:38,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:39:38,927 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:39:38,927 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:39:38,934 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:39:38,935 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:39:38" (1/1) ... [2023-12-03 03:39:38,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:39:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:39:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2023-12-03 03:39:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-12-03 03:39:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-03 03:39:39,001 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:39:39,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:39:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:39:39,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-03 03:39:39,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 03:39:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-03 03:39:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:39:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 38 states and 66 transitions. [2023-12-03 03:39:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2023-12-03 03:39:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-03 03:39:41,088 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:39:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:39:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:39:41,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 03:39:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:39:41,341 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-12-03 03:39:41,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 03:39:41 ImpRootNode [2023-12-03 03:39:41,404 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 03:39:41,405 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 03:39:41,405 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 03:39:41,405 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 03:39:41,405 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:39:38" (3/4) ... [2023-12-03 03:39:41,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 03:39:41,408 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 03:39:41,410 INFO L158 Benchmark]: Toolchain (without parser) took 3322.61ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 101.8MB in the beginning and 130.7MB in the end (delta: -28.9MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2023-12-03 03:39:41,410 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:39:41,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.25ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 89.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-03 03:39:41,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.56ms. Allocated memory is still 138.4MB. Free memory was 89.5MB in the beginning and 87.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 03:39:41,412 INFO L158 Benchmark]: Boogie Preprocessor took 29.88ms. Allocated memory is still 138.4MB. Free memory was 87.1MB in the beginning and 85.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:39:41,412 INFO L158 Benchmark]: RCFGBuilder took 500.66ms. Allocated memory is still 138.4MB. Free memory was 85.7MB in the beginning and 59.2MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-03 03:39:41,413 INFO L158 Benchmark]: CodeCheck took 2476.88ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 59.2MB in the beginning and 131.7MB in the end (delta: -72.6MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2023-12-03 03:39:41,414 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 167.8MB. Free memory was 131.7MB in the beginning and 130.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:39:41,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 111 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 13 mSDtfsCounter, 111 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 337 SizeOfPredicates, 15 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 1 InterpolantComputations, 0 PerfectInterpolantSequences, 44/56 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 83, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = -10; [L23] unsigned char var_1_7 = 200; [L24] unsigned char var_1_8 = 4; [L25] signed char var_1_9 = 50; [L26] signed char var_1_12 = -5; [L27] float var_1_13 = 999999999999.8; [L28] float var_1_14 = 100.5; [L29] float var_1_15 = 32.75; [L30] unsigned char var_1_16 = 1; [L31] unsigned char var_1_17 = 1; [L32] unsigned char var_1_18 = 128; [L33] unsigned char last_1_var_1_7 = 200; [L34] signed char last_1_var_1_9 = 50; [L87] isInitial = 1 [L88] FCALL initially() [L89] COND TRUE 1 [L90] CALL updateLastVariables() [L79] last_1_var_1_7 = var_1_7 [L80] last_1_var_1_9 = var_1_9 [L90] RET updateLastVariables() [L91] CALL updateVariables() [L64] var_1_8 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_9=50] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_9=50] [L66] CALL assume_abort_if_not(var_1_8 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_8 <= 254) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L67] var_1_12 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_12 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_12 >= -127) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L69] CALL assume_abort_if_not(var_1_12 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_12 <= 126) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L70] var_1_14 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L72] var_1_15 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L74] var_1_17 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L76] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=0, var_1_9=50] [L91] RET updateVariables() [L92] CALL step() [L38] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L38] signed long int stepLocal_0 = (last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9; [L39] COND FALSE !(stepLocal_0 < -1) [L42] var_1_1 = (128 - (last_1_var_1_7 + last_1_var_1_7)) [L44] var_1_16 = var_1_17 [L45] var_1_18 = var_1_8 [L46] signed short int stepLocal_2 = var_1_1; [L47] unsigned char stepLocal_1 = (var_1_1 * var_1_18) < -10000; [L48] COND TRUE \read(var_1_16) [L49] COND FALSE !(stepLocal_1 && var_1_16) [L55] COND TRUE var_1_18 == var_1_18 [L56] var_1_7 = var_1_8 [L58] signed short int stepLocal_3 = var_1_1; [L59] COND FALSE !(var_1_18 == stepLocal_3) [L92] RET step() [L93] CALL, EXPR property() [L83] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L83-L84] return ((((((((last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9) < -1) ? (var_1_1 == ((signed short int) 8)) : (var_1_1 == ((signed short int) (128 - (last_1_var_1_7 + last_1_var_1_7))))) && ((var_1_18 == var_1_18) ? (var_1_7 == ((unsigned char) var_1_8)) : 1)) && (var_1_16 ? ((((var_1_1 * var_1_18) < -10000) && var_1_16) ? ((var_1_1 > var_1_1) ? (var_1_9 == ((signed char) var_1_12)) : 1) : 1) : 1)) && ((var_1_18 == var_1_1) ? (var_1_13 == ((float) (var_1_14 - var_1_15))) : 1)) && (var_1_16 == ((unsigned char) var_1_17))) && (var_1_18 == ((unsigned char) var_1_8)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=0, var_1_9=50] [L93] RET __VERIFIER_assert(property()) [L94] isInitial = 0 VAL [isInitial=0, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=0, var_1_9=50] [L89] COND TRUE 1 [L90] CALL updateLastVariables() [L79] last_1_var_1_7 = var_1_7 [L80] last_1_var_1_9 = var_1_9 [L90] RET updateLastVariables() [L91] CALL updateVariables() [L64] var_1_8 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_9=50] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_9=50] [L66] CALL assume_abort_if_not(var_1_8 <= 254) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_8 <= 254) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L67] var_1_12 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_12 >= -127) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_12 >= -127) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L69] CALL assume_abort_if_not(var_1_12 <= 126) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_12 <= 126) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L70] var_1_14 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L72] var_1_15 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L74] var_1_17 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L76] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=-272, var_1_7=0, var_1_8=128, var_1_9=50] [L91] RET updateVariables() [L92] CALL step() [L38] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L38] signed long int stepLocal_0 = (last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9; [L39] COND FALSE !(stepLocal_0 < -1) [L42] var_1_1 = (128 - (last_1_var_1_7 + last_1_var_1_7)) [L44] var_1_16 = var_1_17 [L45] var_1_18 = var_1_8 [L46] signed short int stepLocal_2 = var_1_1; [L47] unsigned char stepLocal_1 = (var_1_1 * var_1_18) < -10000; [L48] COND TRUE \read(var_1_16) [L49] COND FALSE !(stepLocal_1 && var_1_16) [L55] COND TRUE var_1_18 == var_1_18 [L56] var_1_7 = var_1_8 [L58] signed short int stepLocal_3 = var_1_1; [L59] COND TRUE var_1_18 == stepLocal_3 [L60] var_1_13 = (var_1_14 - var_1_15) [L92] RET step() [L93] CALL, EXPR property() [L83] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L83-L84] return ((((((((last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9) < -1) ? (var_1_1 == ((signed short int) 8)) : (var_1_1 == ((signed short int) (128 - (last_1_var_1_7 + last_1_var_1_7))))) && ((var_1_18 == var_1_18) ? (var_1_7 == ((unsigned char) var_1_8)) : 1)) && (var_1_16 ? ((((var_1_1 * var_1_18) < -10000) && var_1_16) ? ((var_1_1 > var_1_1) ? (var_1_9 == ((signed char) var_1_12)) : 1) : 1) : 1)) && ((var_1_18 == var_1_1) ? (var_1_13 == ((float) (var_1_14 - var_1_15))) : 1)) && (var_1_16 == ((unsigned char) var_1_17))) && (var_1_18 == ((unsigned char) var_1_8)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=0, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=128, var_1_7=128, var_1_8=128, var_1_9=50] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=0, last_1_var_1_7=0, last_1_var_1_9=50, var_1_12=126, var_1_13=0, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=128, var_1_7=128, var_1_8=128, var_1_9=50] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.25ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 89.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.56ms. Allocated memory is still 138.4MB. Free memory was 89.5MB in the beginning and 87.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.88ms. Allocated memory is still 138.4MB. Free memory was 87.1MB in the beginning and 85.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 500.66ms. Allocated memory is still 138.4MB. Free memory was 85.7MB in the beginning and 59.2MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * CodeCheck took 2476.88ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 59.2MB in the beginning and 131.7MB in the end (delta: -72.6MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 167.8MB. Free memory was 131.7MB in the beginning and 130.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-03 03:39:41,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9be54bf039b1b69bac47621c18caa89883f4e5db7b74fe4f3e62990547785f77 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:39:43,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:39:43,432 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2023-12-03 03:39:43,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:39:43,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 03:39:43,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 03:39:43,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:39:43,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:39:43,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:39:43,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 03:39:43,474 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 03:39:43,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 03:39:43,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:39:43,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 03:39:43,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:39:43,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 03:39:43,477 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-03 03:39:43,478 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-03 03:39:43,478 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-03 03:39:43,479 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 03:39:43,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 03:39:43,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:39:43,480 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:39:43,481 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:39:43,481 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:39:43,482 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 03:39:43,482 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-03 03:39:43,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:39:43,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:39:43,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:39:43,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:39:43,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 03:39:43,485 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-03 03:39:43,485 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 03:39:43,486 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 03:39:43,486 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-03 03:39:43,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-03 03:39:43,487 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be54bf039b1b69bac47621c18caa89883f4e5db7b74fe4f3e62990547785f77 [2023-12-03 03:39:43,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:39:43,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:39:43,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:39:43,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:39:43,815 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:39:43,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i [2023-12-03 03:39:46,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:39:46,812 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:39:46,812 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i [2023-12-03 03:39:46,820 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data/afc8c7199/da3be777e2d94d67bdfe129d34587749/FLAGae8ec1273 [2023-12-03 03:39:46,835 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/data/afc8c7199/da3be777e2d94d67bdfe129d34587749 [2023-12-03 03:39:46,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:39:46,839 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:39:46,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:39:46,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:39:46,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:39:46,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:39:46" (1/1) ... [2023-12-03 03:39:46,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233ea438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:46, skipping insertion in model container [2023-12-03 03:39:46,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:39:46" (1/1) ... [2023-12-03 03:39:46,873 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:39:47,023 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_552b55cd-19f1-4638-bc5f-73e577da3425/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i[915,928] [2023-12-03 03:39:47,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:39:47,075 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:39:47,087 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_552b55cd-19f1-4638-bc5f-73e577da3425/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-33.i[915,928] [2023-12-03 03:39:47,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:39:47,122 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:39:47,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47 WrapperNode [2023-12-03 03:39:47,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:39:47,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:39:47,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:39:47,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:39:47,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,168 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-12-03 03:39:47,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:39:47,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:39:47,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:39:47,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:39:47,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:39:47,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:39:47,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:39:47,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:39:47,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:39:47,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:39:47,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:39:47,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:39:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:39:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-03 03:39:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-03 03:39:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-03 03:39:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:39:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:39:47,384 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:39:47,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:39:47,617 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:39:47,733 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:39:47,733 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 03:39:47,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:39:47 BoogieIcfgContainer [2023-12-03 03:39:47,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:39:47,736 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:39:47,736 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:39:47,746 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:39:47,746 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:39:47" (1/1) ... [2023-12-03 03:39:47,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:39:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:39:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2023-12-03 03:39:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-12-03 03:39:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-03 03:39:47,817 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:39:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:39:47,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:39:47,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:39:47,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-03 03:39:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:39:48,171 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:39:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:39:48,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-03 03:39:48,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 03:41:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-03 03:41:32,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-03 03:41:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:41:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 38 states and 54 transitions. [2023-12-03 03:41:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2023-12-03 03:41:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-03 03:41:33,103 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:41:33,103 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:41:33,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:41:33,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:41:33,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-12-03 03:41:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:41:33,569 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:41:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:41:34,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-03 03:41:34,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 03:43:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 34 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-03 03:43:20,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2023-12-03 03:43:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:43:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 72 states and 114 transitions. [2023-12-03 03:43:25,103 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 114 transitions. [2023-12-03 03:43:25,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-03 03:43:25,106 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:43:25,106 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:43:25,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:43:25,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:43:25,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-03 03:43:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:43:25,558 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:43:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:43:25,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-03 03:43:25,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 03:45:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 34 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-03 03:45:10,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-03 03:45:10,541 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Exception during sending of exit command (exit): Broken pipe [2023-12-03 03:45:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:45:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 72 states and 114 transitions. [2023-12-03 03:45:10,952 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 114 transitions. [2023-12-03 03:45:10,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-03 03:45:10,954 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:45:10,954 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:45:10,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:45:10,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:45:10,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-03 03:45:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:45:11,385 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:45:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:45:11,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-03 03:45:11,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 03:46:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 38 proven. 154 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-03 03:46:56,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-03 03:46:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:46:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 72 states and 114 transitions. [2023-12-03 03:46:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 114 transitions. [2023-12-03 03:46:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-03 03:46:56,309 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:46:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:46:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:46:56,310 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:46:56,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-03 03:46:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:46:56,746 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:46:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:46:57,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-03 03:46:57,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 03:50:50,790 WARN L293 SmtUtils]: Spent 15.48s on a formula simplification. DAG size of input: 32 DAG size of output: 13 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 03:52:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 34 proven. 154 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-03 03:52:36,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-03 03:52:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:52:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 72 states and 114 transitions. [2023-12-03 03:52:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 114 transitions. [2023-12-03 03:52:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-03 03:52:36,772 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:52:36,772 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:52:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:52:36,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:52:36,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-03 03:52:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:52:37,187 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:52:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:52:37,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-03 03:52:37,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 03:54:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 34 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-03 03:54:22,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-03 03:54:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:54:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 72 states and 114 transitions. [2023-12-03 03:54:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 114 transitions. [2023-12-03 03:54:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-03 03:54:22,670 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:54:22,671 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:54:22,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:54:22,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:54:22,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552b55cd-19f1-4638-bc5f-73e577da3425/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-03 03:54:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:54:23,101 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:54:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:54:23,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-03 03:54:23,589 INFO L285 TraceCheckSpWp]: Computing forward predicates...