./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL --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 8934c7d58d71c9b3a06e793f6df8377fb9dcad08c89a636c2f08c1bbd4767b93 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:51:10,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:51:10,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-19 02:51:10,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:51:10,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:51:10,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:51:10,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:51:10,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:51:10,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:51:10,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:51:10,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:51:10,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:51:10,522 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 02:51:10,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:51:10,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 02:51:10,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:51:10,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:51:10,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:51:10,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:51:10,527 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 02:51:10,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:51:10,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:51:10,528 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:51:10,529 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:51:10,529 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:51:10,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:51:10,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:51:10,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:51:10,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:51:10,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:51:10,533 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:51:10,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:51:10,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:51:10,535 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_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8934c7d58d71c9b3a06e793f6df8377fb9dcad08c89a636c2f08c1bbd4767b93 [2023-11-19 02:51:10,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:51:10,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:51:10,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:51:10,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:51:10,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:51:10,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c [2023-11-19 02:51:14,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:51:14,263 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:51:14,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c [2023-11-19 02:51:14,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data/75dd5d0ff/b8d79aefe24b4c1fb97e7edaf7876a16/FLAGbda1d62c9 [2023-11-19 02:51:14,282 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data/75dd5d0ff/b8d79aefe24b4c1fb97e7edaf7876a16 [2023-11-19 02:51:14,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:51:14,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:51:14,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:51:14,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:51:14,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:51:14,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b9761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14, skipping insertion in model container [2023-11-19 02:51:14,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,329 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:51:14,498 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_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c[552,565] [2023-11-19 02:51:14,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:51:14,529 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:51:14,541 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_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c[552,565] [2023-11-19 02:51:14,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:51:14,564 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:51:14,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14 WrapperNode [2023-11-19 02:51:14,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:51:14,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:51:14,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:51:14,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:51:14,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,600 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2023-11-19 02:51:14,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:51:14,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:51:14,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:51:14,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:51:14,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:51:14,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:51:14,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:51:14,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:51:14,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:14" (1/1) ... [2023-11-19 02:51:14,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:51:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:51:14,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:51:14,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:51:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:51:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 02:51:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 02:51:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 02:51:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:51:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:51:14,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 02:51:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 02:51:14,777 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:51:14,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:51:14,974 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:51:15,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:51:15,003 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 02:51:15,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:15 BoogieIcfgContainer [2023-11-19 02:51:15,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:51:15,009 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:51:15,009 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:51:15,017 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:51:15,017 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:15" (1/1) ... [2023-11-19 02:51:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:51:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 30 states and 45 transitions. [2023-11-19 02:51:15,079 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 45 transitions. [2023-11-19 02:51:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 02:51:15,084 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:15,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:51:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:15,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 02:51:15,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:51:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 02:51:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 34 states and 53 transitions. [2023-11-19 02:51:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2023-11-19 02:51:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 02:51:15,782 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:51:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-11-19 02:51:25,880 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck has thrown an exception: java.lang.UnsupportedOperationException: Solver said unknown at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:488) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.CFGWalker.runObserver(CFGWalker.java:57) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:166) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 02:51:25,884 INFO L158 Benchmark]: Toolchain (without parser) took 11596.86ms. Allocated memory was 148.9MB in the beginning and 216.0MB in the end (delta: 67.1MB). Free memory was 103.9MB in the beginning and 174.2MB in the end (delta: -70.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:51:25,884 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 148.9MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:51:25,885 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.18ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 92.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 02:51:25,886 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.40ms. Allocated memory is still 148.9MB. Free memory was 92.7MB in the beginning and 91.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:51:25,886 INFO L158 Benchmark]: Boogie Preprocessor took 24.43ms. Allocated memory is still 148.9MB. Free memory was 91.0MB in the beginning and 89.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:51:25,887 INFO L158 Benchmark]: RCFGBuilder took 381.38ms. Allocated memory is still 148.9MB. Free memory was 89.9MB in the beginning and 76.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 02:51:25,888 INFO L158 Benchmark]: CodeCheck took 10873.61ms. Allocated memory was 148.9MB in the beginning and 216.0MB in the end (delta: 67.1MB). Free memory was 76.7MB in the beginning and 174.2MB in the end (delta: -97.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:51:25,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - ExceptionOrErrorResult: UnsupportedOperationException: Solver said unknown de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: UnsupportedOperationException: Solver said unknown: de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:488) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 148.9MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.18ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 92.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.40ms. Allocated memory is still 148.9MB. Free memory was 92.7MB in the beginning and 91.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.43ms. Allocated memory is still 148.9MB. Free memory was 91.0MB in the beginning and 89.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 381.38ms. Allocated memory is still 148.9MB. Free memory was 89.9MB in the beginning and 76.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 10873.61ms. Allocated memory was 148.9MB in the beginning and 216.0MB in the end (delta: 67.1MB). Free memory was 76.7MB in the beginning and 174.2MB in the end (delta: -97.5MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-19 02:51:25,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL --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 8934c7d58d71c9b3a06e793f6df8377fb9dcad08c89a636c2f08c1bbd4767b93 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:51:28,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:51:28,651 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2023-11-19 02:51:28,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:51:28,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:51:28,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:51:28,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:51:28,716 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:51:28,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:51:28,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:51:28,722 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 02:51:28,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 02:51:28,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:51:28,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:51:28,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:51:28,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:51:28,726 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 02:51:28,727 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 02:51:28,727 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 02:51:28,728 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 02:51:28,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:51:28,729 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:51:28,730 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:51:28,730 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:51:28,730 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:51:28,731 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:51:28,731 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 02:51:28,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:51:28,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:51:28,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:51:28,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:51:28,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:51:28,734 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 02:51:28,735 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:51:28,735 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:51:28,735 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 02:51:28,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 02:51:28,736 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_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8934c7d58d71c9b3a06e793f6df8377fb9dcad08c89a636c2f08c1bbd4767b93 [2023-11-19 02:51:29,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:51:29,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:51:29,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:51:29,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:51:29,149 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:51:29,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c [2023-11-19 02:51:32,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:51:32,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:51:32,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c [2023-11-19 02:51:32,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data/643a330a3/b9e663c86edf41c98f4b6b668eab9a9b/FLAGaabe30643 [2023-11-19 02:51:32,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/data/643a330a3/b9e663c86edf41c98f4b6b668eab9a9b [2023-11-19 02:51:32,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:51:32,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:51:32,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:51:32,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:51:32,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:51:32,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee74a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32, skipping insertion in model container [2023-11-19 02:51:32,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,526 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:51:32,684 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_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c[552,565] [2023-11-19 02:51:32,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:51:32,716 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:51:32,731 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_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c[552,565] [2023-11-19 02:51:32,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:51:32,755 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:51:32,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32 WrapperNode [2023-11-19 02:51:32,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:51:32,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:51:32,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:51:32,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:51:32,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,795 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2023-11-19 02:51:32,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:51:32,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:51:32,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:51:32,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:51:32,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:51:32,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:51:32,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:51:32,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:51:32,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:32" (1/1) ... [2023-11-19 02:51:32,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:51:32,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:51:32,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:51:32,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:51:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:51:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 02:51:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 02:51:32,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 02:51:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:51:32,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:51:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 02:51:32,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 02:51:32,995 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:51:32,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:51:33,307 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:51:33,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:51:33,385 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 02:51:33,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:33 BoogieIcfgContainer [2023-11-19 02:51:33,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:51:33,394 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:51:33,394 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:51:33,405 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:51:33,405 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:33" (1/1) ... [2023-11-19 02:51:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:51:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 30 states and 45 transitions. [2023-11-19 02:51:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 45 transitions. [2023-11-19 02:51:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 02:51:33,496 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:33,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:51:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:51:33,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:51:33,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 02:51:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:33,694 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 02:51:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:34,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 02:51:34,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:51:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 02:51:35,318 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 02:51:35,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-19 02:51:37,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 02:51:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 34 states and 53 transitions. [2023-11-19 02:51:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2023-11-19 02:51:37,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 02:51:37,319 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:37,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:51:37,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:51:37,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:51:37,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 02:51:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:37,503 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 02:51:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:37,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 02:51:37,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:51:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 02:51:38,297 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 02:51:38,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-19 02:51:40,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 02:51:41,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 02:51:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 40 states and 68 transitions. [2023-11-19 02:51:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 68 transitions. [2023-11-19 02:51:42,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 02:51:42,043 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:51:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:51:42,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:51:42,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 02:51:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:42,172 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 02:51:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:42,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 02:51:42,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:51:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 02:51:44,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-19 02:51:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 42 states and 72 transitions. [2023-11-19 02:51:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 72 transitions. [2023-11-19 02:51:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 02:51:47,145 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:47,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:51:47,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:51:47,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:51:47,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-19 02:51:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:47,210 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 02:51:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:47,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 02:51:47,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:51:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 02:51:47,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-19 02:51:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 43 states and 74 transitions. [2023-11-19 02:51:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2023-11-19 02:51:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 02:51:48,086 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:48,086 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:51:48,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:51:48,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:51:48,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-19 02:51:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:48,170 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 02:51:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:48,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 02:51:48,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:51:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 02:51:50,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-19 02:52:03,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 02:52:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:52:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 46 states and 79 transitions. [2023-11-19 02:52:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 79 transitions. [2023-11-19 02:52:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 02:52:03,787 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:52:03,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:52:03,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:52:03,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:52:03,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 02:52:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:52:03,955 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 02:52:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:52:06,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 02:52:06,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:52:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 02:52:08,098 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (7)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 02:52:08,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3391b6c9-b38f-4ea5-a2e4-ef357c806b8f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 02:52:16,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []