./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9 --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 64bit --witnessprinter.graph.data.programhash 002ffbd09e057f56028aff15fe1fea8f5a73210903f4d60a4a822560ee8c3510 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 01:41:58,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 01:41:58,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-03 01:41:58,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 01:41:58,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 01:41:58,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 01:41:58,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 01:41:58,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 01:41:58,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 01:41:58,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 01:41:58,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 01:41:58,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 01:41:58,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 01:41:58,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 01:41:58,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 01:41:58,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 01:41:58,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 01:41:58,810 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 01:41:58,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 01:41:58,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 01:41:58,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 01:41:58,812 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 01:41:58,813 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 01:41:58,813 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 01:41:58,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 01:41:58,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 01:41:58,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 01:41:58,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 01:41:58,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 01:41:58,816 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 01:41:58,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 01:41:58,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 01:41:58,817 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_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 002ffbd09e057f56028aff15fe1fea8f5a73210903f4d60a4a822560ee8c3510 [2023-12-03 01:41:59,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 01:41:59,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 01:41:59,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 01:41:59,071 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 01:41:59,072 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 01:41:59,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c [2023-12-03 01:42:01,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 01:42:01,981 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 01:42:01,982 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c [2023-12-03 01:42:01,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/data/31d882e59/a081a80a64e9404bac21f005a74af6c8/FLAGace95f96b [2023-12-03 01:42:02,000 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/data/31d882e59/a081a80a64e9404bac21f005a74af6c8 [2023-12-03 01:42:02,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 01:42:02,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 01:42:02,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 01:42:02,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 01:42:02,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 01:42:02,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620bdedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02, skipping insertion in model container [2023-12-03 01:42:02,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,024 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 01:42:02,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 01:42:02,149 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 01:42:02,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 01:42:02,182 INFO L206 MainTranslator]: Completed translation [2023-12-03 01:42:02,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02 WrapperNode [2023-12-03 01:42:02,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 01:42:02,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 01:42:02,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 01:42:02,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 01:42:02,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,220 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-12-03 01:42:02,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 01:42:02,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 01:42:02,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 01:42:02,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 01:42:02,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 01:42:02,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 01:42:02,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 01:42:02,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 01:42:02,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 01:42:02,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 01:42:02,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 01:42:02,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 01:42:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 01:42:02,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 01:42:02,354 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 01:42:02,356 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 01:42:02,434 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 01:42:02,458 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 01:42:02,459 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 01:42:02,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:42:02 BoogieIcfgContainer [2023-12-03 01:42:02,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 01:42:02,462 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 01:42:02,462 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 01:42:02,470 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 01:42:02,470 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:42:02" (1/1) ... [2023-12-03 01:42:02,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 01:42:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2023-12-03 01:42:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-03 01:42:02,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 01:42:02,530 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2023-12-03 01:42:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-12-03 01:42:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 01:42:02,697 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:02,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2023-12-03 01:42:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-03 01:42:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-03 01:42:02,740 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:02,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2023-12-03 01:42:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2023-12-03 01:42:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-03 01:42:02,858 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:02,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2023-12-03 01:42:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-03 01:42:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-03 01:42:02,912 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:02,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 23 states and 30 transitions. [2023-12-03 01:42:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-12-03 01:42:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-03 01:42:02,996 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2023-12-03 01:42:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2023-12-03 01:42:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-03 01:42:03,246 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:03,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-12-03 01:42:03,310 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-03 01:42:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-03 01:42:03,311 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:03,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-03 01:42:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-12-03 01:42:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-03 01:42:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-03 01:42:03,408 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:03,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:42:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2023-12-03 01:42:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-03 01:42:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-03 01:42:03,623 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:42:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:42:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:42:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-03 01:42:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:42:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2023-12-03 01:42:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-03 01:42:03,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-03 01:42:03,660 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 11 iterations. [2023-12-03 01:42:03,669 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-12-03 01:42:03,747 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-12-03 01:42:03,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 01:42:03 ImpRootNode [2023-12-03 01:42:03,753 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 01:42:03,754 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 01:42:03,754 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 01:42:03,754 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 01:42:03,754 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:42:02" (3/4) ... [2023-12-03 01:42:03,756 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-03 01:42:03,763 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-12-03 01:42:03,763 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-03 01:42:03,764 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-03 01:42:03,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 01:42:03,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-03 01:42:03,845 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 01:42:03,845 INFO L158 Benchmark]: Toolchain (without parser) took 1842.08ms. Allocated memory is still 163.6MB. Free memory was 95.1MB in the beginning and 115.1MB in the end (delta: -20.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:42:03,846 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 163.6MB. Free memory was 134.7MB in the beginning and 134.5MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:42:03,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.35ms. Allocated memory is still 163.6MB. Free memory was 95.0MB in the beginning and 135.3MB in the end (delta: -40.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2023-12-03 01:42:03,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.22ms. Allocated memory is still 163.6MB. Free memory was 135.3MB in the beginning and 133.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 01:42:03,847 INFO L158 Benchmark]: Boogie Preprocessor took 18.02ms. Allocated memory is still 163.6MB. Free memory was 133.9MB in the beginning and 133.4MB in the end (delta: 554.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:42:03,848 INFO L158 Benchmark]: RCFGBuilder took 220.99ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 122.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 01:42:03,848 INFO L158 Benchmark]: CodeCheck took 1291.33ms. Allocated memory is still 163.6MB. Free memory was 122.9MB in the beginning and 119.1MB in the end (delta: 3.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-12-03 01:42:03,848 INFO L158 Benchmark]: Witness Printer took 91.06ms. Allocated memory is still 163.6MB. Free memory was 119.1MB in the beginning and 115.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 01:42:03,851 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 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 40 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 578 GetRequests, 525 SyntacticMatches, 19 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 18/18 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: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (0 <= x) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 163.6MB. Free memory was 134.7MB in the beginning and 134.5MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.35ms. Allocated memory is still 163.6MB. Free memory was 95.0MB in the beginning and 135.3MB in the end (delta: -40.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.22ms. Allocated memory is still 163.6MB. Free memory was 135.3MB in the beginning and 133.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.02ms. Allocated memory is still 163.6MB. Free memory was 133.9MB in the beginning and 133.4MB in the end (delta: 554.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 220.99ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 122.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1291.33ms. Allocated memory is still 163.6MB. Free memory was 122.9MB in the beginning and 119.1MB in the end (delta: 3.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Witness Printer took 91.06ms. Allocated memory is still 163.6MB. Free memory was 119.1MB in the beginning and 115.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-12-03 01:42:03,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae510af-c42a-4b31-a578-541a2afe9d06/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE