./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/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_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea5067dfa77458b8ea4f8f835e068ba134ca35821331206475c8d72407b7767c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:57:34,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:57:34,354 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-19 02:57:34,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:57:34,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:57:34,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:57:34,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:57:34,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:57:34,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:57:34,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:57:34,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:57:34,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:57:34,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 02:57:34,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:57:34,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 02:57:34,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:57:34,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:57:34,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:57:34,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:57:34,394 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:57:34,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:57:34,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 02:57:34,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:57:34,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:57:34,398 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:57:34,398 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:57:34,399 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:57:34,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:57:34,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:57:34,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:57:34,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:57:34,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:57:34,402 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:57:34,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:57:34,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:57:34,403 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_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea5067dfa77458b8ea4f8f835e068ba134ca35821331206475c8d72407b7767c [2023-11-19 02:57:34,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:57:34,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:57:34,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:57:34,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:57:34,744 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:57:34,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound10.c [2023-11-19 02:57:37,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:57:38,138 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:57:38,138 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound10.c [2023-11-19 02:57:38,147 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/data/18892e0dc/8c89077995f343469fd313b8c4104ca3/FLAGc51450345 [2023-11-19 02:57:38,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/data/18892e0dc/8c89077995f343469fd313b8c4104ca3 [2023-11-19 02:57:38,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:57:38,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:57:38,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:57:38,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:57:38,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:57:38,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b0f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38, skipping insertion in model container [2023-11-19 02:57:38,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:57:38,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:57:38,445 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:57:38,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:57:38,478 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:57:38,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38 WrapperNode [2023-11-19 02:57:38,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:57:38,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:57:38,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:57:38,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:57:38,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,515 INFO L138 Inliner]: procedures = 14, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-11-19 02:57:38,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:57:38,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:57:38,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:57:38,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:57:38,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:57:38,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:57:38,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:57:38,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:57:38,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:57:38,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:57:38,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:57:38,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:57:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:57:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 02:57:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 02:57:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 02:57:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:57:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:57:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 02:57:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 02:57:38,702 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:57:38,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:57:38,918 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:57:38,966 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:57:38,967 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 02:57:38,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:38 BoogieIcfgContainer [2023-11-19 02:57:38,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:57:38,973 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:57:38,973 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:57:38,984 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:57:38,985 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:38" (1/1) ... [2023-11-19 02:57:38,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:57:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:57:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 27 transitions. [2023-11-19 02:57:39,048 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-19 02:57:39,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 02:57:39,053 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:57:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:57:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:57:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 02:57:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:57:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 23 states and 29 transitions. [2023-11-19 02:57:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-11-19 02:57:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 02:57:39,542 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:57:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:57:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:57:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 02:57:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:57:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 24 states and 30 transitions. [2023-11-19 02:57:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-19 02:57:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 02:57:39,689 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:57:39,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:57:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:57:39,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 02:57:39,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:57:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 02:57:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:57:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 31 states and 42 transitions. [2023-11-19 02:57:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-11-19 02:57:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 02:57:40,117 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:57:40,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:57:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:57:40,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 02:57:40,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:57:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 02:57:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:57:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 32 states and 44 transitions. [2023-11-19 02:57:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2023-11-19 02:57:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 02:57:40,702 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:57:40,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:57:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:57:40,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 02:57:40,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:57:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 02:57:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:57:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 28 states and 36 transitions. [2023-11-19 02:57:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2023-11-19 02:57:41,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 02:57:41,829 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-11-19 02:57:41,837 INFO L751 CodeCheckObserver]: All specifications hold 2 specifications checked. All of them hold [2023-11-19 02:57:41,888 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-19 02:57:41,892 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-19 02:57:41,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:57:41 ImpRootNode [2023-11-19 02:57:41,893 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:57:41,894 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:57:41,894 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:57:41,894 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:57:41,894 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:38" (3/4) ... [2023-11-19 02:57:41,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 02:57:41,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 02:57:41,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 02:57:41,904 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-19 02:57:41,905 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 02:57:41,905 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 02:57:41,905 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 02:57:41,906 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 02:57:41,995 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 02:57:41,996 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/witness.yml [2023-11-19 02:57:41,996 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:57:41,997 INFO L158 Benchmark]: Toolchain (without parser) took 3817.28ms. Allocated memory is still 184.5MB. Free memory was 155.5MB in the beginning and 80.8MB in the end (delta: 74.7MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2023-11-19 02:57:41,997 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:57:41,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.67ms. Allocated memory is still 184.5MB. Free memory was 155.3MB in the beginning and 148.2MB in the end (delta: 7.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-11-19 02:57:41,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.24ms. Allocated memory is still 184.5MB. Free memory was 148.2MB in the beginning and 146.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:57:41,999 INFO L158 Benchmark]: Boogie Preprocessor took 25.24ms. Allocated memory is still 184.5MB. Free memory was 146.5MB in the beginning and 145.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:57:41,999 INFO L158 Benchmark]: RCFGBuilder took 429.50ms. Allocated memory is still 184.5MB. Free memory was 145.2MB in the beginning and 146.3MB in the end (delta: -1.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 02:57:42,000 INFO L158 Benchmark]: CodeCheck took 2920.47ms. Allocated memory is still 184.5MB. Free memory was 146.3MB in the beginning and 85.0MB in the end (delta: 61.3MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2023-11-19 02:57:42,000 INFO L158 Benchmark]: Witness Printer took 102.65ms. Allocated memory is still 184.5MB. Free memory was 85.0MB in the beginning and 80.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 02:57:42,003 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 3 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 221 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 214 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 337 IncrementalHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 174 mSDtfsCounter, 337 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 885 GetRequests, 808 SyntacticMatches, 19 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 251 SizeOfPredicates, 8 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 77/77 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 - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.67ms. Allocated memory is still 184.5MB. Free memory was 155.3MB in the beginning and 148.2MB in the end (delta: 7.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.24ms. Allocated memory is still 184.5MB. Free memory was 148.2MB in the beginning and 146.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.24ms. Allocated memory is still 184.5MB. Free memory was 146.5MB in the beginning and 145.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.50ms. Allocated memory is still 184.5MB. Free memory was 145.2MB in the beginning and 146.3MB in the end (delta: -1.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * CodeCheck took 2920.47ms. Allocated memory is still 184.5MB. Free memory was 146.3MB in the beginning and 85.0MB in the end (delta: 61.3MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * Witness Printer took 102.65ms. Allocated memory is still 184.5MB. Free memory was 85.0MB in the beginning and 80.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-19 02:57:42,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff7bfc-88f2-40a7-a5c5-9195e22f9371/bin/ukojak-verify-G8NBE6pJGL/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 Writing output log to file Ultimate.log Result: TRUE