./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC --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 3507c00d68b8e41390815967879286d70904cb2355267878593fbddaafb4b556 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:15:28,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:15:28,586 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-23 20:15:28,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:15:28,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:15:28,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:15:28,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:15:28,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:15:28,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:15:28,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:15:28,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:15:28,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:15:28,671 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:15:28,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:15:28,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:15:28,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:15:28,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:15:28,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:15:28,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:15:28,678 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:15:28,678 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:15:28,679 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:15:28,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:15:28,681 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:15:28,682 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:15:28,683 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:15:28,683 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:15:28,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:15:28,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:15:28,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:15:28,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:15:28,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:15:28,688 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:15:28,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:15:28,689 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:15:28,689 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_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3507c00d68b8e41390815967879286d70904cb2355267878593fbddaafb4b556 [2023-11-23 20:15:29,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:15:29,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:15:29,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:15:29,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:15:29,122 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:15:29,125 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c [2023-11-23 20:15:33,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:15:33,367 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:15:33,368 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c [2023-11-23 20:15:33,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/data/80d6d2a04/e034ee0bd86c45148173ce5ba0a0f68e/FLAGef20e06e7 [2023-11-23 20:15:33,404 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/data/80d6d2a04/e034ee0bd86c45148173ce5ba0a0f68e [2023-11-23 20:15:33,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:15:33,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:15:33,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:15:33,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:15:33,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:15:33,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a118358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33, skipping insertion in model container [2023-11-23 20:15:33,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:15:33,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:15:33,689 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:15:33,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:15:33,743 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:15:33,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33 WrapperNode [2023-11-23 20:15:33,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:15:33,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:15:33,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:15:33,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:15:33,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,800 INFO L138 Inliner]: procedures = 18, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 156 [2023-11-23 20:15:33,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:15:33,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:15:33,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:15:33,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:15:33,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:15:33,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:15:33,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:15:33,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:15:33,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:33" (1/1) ... [2023-11-23 20:15:33,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:15:33,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:15:33,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:15:33,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:15:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:15:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:15:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:15:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:15:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:15:33,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:15:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-23 20:15:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:15:34,041 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:15:34,044 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:15:34,354 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:15:34,443 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:15:34,444 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:15:34,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:34 BoogieIcfgContainer [2023-11-23 20:15:34,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:15:34,448 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:15:34,448 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:15:34,463 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:15:34,464 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:34" (1/1) ... [2023-11-23 20:15:34,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:15:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 31 states and 43 transitions. [2023-11-23 20:15:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2023-11-23 20:15:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:15:34,563 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 41 transitions. [2023-11-23 20:15:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-11-23 20:15:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:15:34,980 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 29 states and 40 transitions. [2023-11-23 20:15:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2023-11-23 20:15:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:15:35,105 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 39 transitions. [2023-11-23 20:15:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-11-23 20:15:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:15:35,255 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:35,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 27 states and 37 transitions. [2023-11-23 20:15:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2023-11-23 20:15:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:15:35,515 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:35,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 39 transitions. [2023-11-23 20:15:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-11-23 20:15:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 20:15:35,768 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:35,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 30 states and 42 transitions. [2023-11-23 20:15:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2023-11-23 20:15:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 20:15:36,026 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:36,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 39 transitions. [2023-11-23 20:15:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-11-23 20:15:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 20:15:36,225 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 32 states and 45 transitions. [2023-11-23 20:15:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2023-11-23 20:15:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:15:36,518 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 36 states and 50 transitions. [2023-11-23 20:15:36,764 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2023-11-23 20:15:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 20:15:36,765 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:36,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 32 states and 44 transitions. [2023-11-23 20:15:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2023-11-23 20:15:37,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:15:37,001 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 11 iterations. [2023-11-23 20:15:37,017 INFO L751 CodeCheckObserver]: All specifications hold 6 specifications checked. All of them hold [2023-11-23 20:15:37,129 INFO L560 CodeCheckObserver]: Invariant with dag size 17 [2023-11-23 20:15:37,145 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:15:37,146 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:15:37,146 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:15:37,146 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:15:37,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:15:37 ImpRootNode [2023-11-23 20:15:37,147 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:15:37,148 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:15:37,149 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:15:37,149 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:15:37,150 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:34" (3/4) ... [2023-11-23 20:15:37,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:15:37,165 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-23 20:15:37,165 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 20:15:37,166 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 20:15:37,166 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:15:37,357 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:15:37,358 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/witness.yml [2023-11-23 20:15:37,358 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:15:37,359 INFO L158 Benchmark]: Toolchain (without parser) took 3945.70ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 115.3MB in the beginning and 97.0MB in the end (delta: 18.3MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2023-11-23 20:15:37,360 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:15:37,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.90ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 104.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:15:37,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.36ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:15:37,361 INFO L158 Benchmark]: Boogie Preprocessor took 40.47ms. Allocated memory is still 155.2MB. Free memory was 102.0MB in the beginning and 100.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:15:37,362 INFO L158 Benchmark]: RCFGBuilder took 602.99ms. Allocated memory is still 155.2MB. Free memory was 100.6MB in the beginning and 85.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:15:37,363 INFO L158 Benchmark]: CodeCheck took 2699.66ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 85.9MB in the beginning and 102.2MB in the end (delta: -16.3MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-11-23 20:15:37,363 INFO L158 Benchmark]: Witness Printer took 210.01ms. Allocated memory is still 186.6MB. Free memory was 102.2MB in the beginning and 97.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 20:15:37,366 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, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 266 mSDsluCounter, 369 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 660 IncrementalHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 200 mSDtfsCounter, 660 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1172 GetRequests, 1097 SyntacticMatches, 41 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 370 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 1/29 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: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 92]: Loop Invariant Derived loop invariant: ((((3 < main__i) && (main__i <= 4)) || ((main__i <= 3) && (2 < main__i))) || ((main__i <= 2) && (0 <= (main__i + 2147483648)))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.90ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 104.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.36ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.47ms. Allocated memory is still 155.2MB. Free memory was 102.0MB in the beginning and 100.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 602.99ms. Allocated memory is still 155.2MB. Free memory was 100.6MB in the beginning and 85.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 2699.66ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 85.9MB in the beginning and 102.2MB in the end (delta: -16.3MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Witness Printer took 210.01ms. Allocated memory is still 186.6MB. Free memory was 102.2MB in the beginning and 97.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-23 20:15:37,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fcc7f9-60ff-4fc7-ad8c-61eec5b42305/bin/ukojak-verify-1t5iHCbJaC/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