./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-industry-pattern/ofuf_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/ofuf_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2 --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 469e121da4ec833c883deffdd0e34cc6fa7cb9d795a4a108dd1361b9d2695780 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:45:45,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:45:45,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-21 18:45:45,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:45:45,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:45:45,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:45:45,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:45:45,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:45:45,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:45:45,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:45:45,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:45:45,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:45:45,223 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:45:45,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:45:45,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:45:45,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:45:45,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:45:45,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:45:45,226 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:45:45,230 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:45:45,235 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:45:45,236 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:45:45,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:45:45,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:45:45,239 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:45:45,240 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:45:45,240 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:45:45,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:45:45,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:45:45,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:45:45,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:45:45,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:45:45,244 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:45:45,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:45:45,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:45:45,245 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_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 469e121da4ec833c883deffdd0e34cc6fa7cb9d795a4a108dd1361b9d2695780 [2023-11-21 18:45:45,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:45:45,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:45:45,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:45:45,657 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:45:45,658 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:45:45,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/loop-industry-pattern/ofuf_4.c [2023-11-21 18:45:48,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:45:49,164 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:45:49,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/sv-benchmarks/c/loop-industry-pattern/ofuf_4.c [2023-11-21 18:45:49,177 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/data/370e7802e/003047b2074442c49ff455daaba1c17f/FLAG21323f70b [2023-11-21 18:45:49,193 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/data/370e7802e/003047b2074442c49ff455daaba1c17f [2023-11-21 18:45:49,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:45:49,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:45:49,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:45:49,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:45:49,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:45:49,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e994f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49, skipping insertion in model container [2023-11-21 18:45:49,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,249 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:45:49,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:45:49,542 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:45:49,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:45:49,660 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:45:49,669 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:45:49,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49 WrapperNode [2023-11-21 18:45:49,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:45:49,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:45:49,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:45:49,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:45:49,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,794 INFO L138 Inliner]: procedures = 29, calls = 159, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 459 [2023-11-21 18:45:49,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:45:49,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:45:49,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:45:49,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:45:49,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:45:49,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:45:49,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:45:49,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:45:49,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:49" (1/1) ... [2023-11-21 18:45:49,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:45:49,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:45:49,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:45:49,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:45:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 18:45:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:45:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2023-11-21 18:45:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2023-11-21 18:45:49,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 18:45:49,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:45:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:45:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:45:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 18:45:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-21 18:45:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:45:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2023-11-21 18:45:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2023-11-21 18:45:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 18:45:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:45:49,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:45:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2023-11-21 18:45:49,992 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2023-11-21 18:45:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:45:50,188 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:45:50,190 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:45:50,969 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:45:51,278 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:45:51,278 INFO L308 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-21 18:45:51,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:45:51 BoogieIcfgContainer [2023-11-21 18:45:51,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:45:51,281 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:45:51,282 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:45:51,293 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:45:51,294 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:45:51" (1/1) ... [2023-11-21 18:45:51,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:45:51,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:45:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 65 states and 95 transitions. [2023-11-21 18:45:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 95 transitions. [2023-11-21 18:45:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 18:45:51,392 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:45:51,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:45:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:45:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:45:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:45:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 64 states and 94 transitions. [2023-11-21 18:45:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2023-11-21 18:45:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 18:45:51,779 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:45:51,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:45:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:45:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:45:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:45:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 63 states and 93 transitions. [2023-11-21 18:45:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 93 transitions. [2023-11-21 18:45:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 18:45:51,933 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:45:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:45:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:45:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 18:45:52,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:45:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 65 states and 98 transitions. [2023-11-21 18:45:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 98 transitions. [2023-11-21 18:45:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 18:45:52,266 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:45:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:45:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:45:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 18:45:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:45:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 70 states and 114 transitions. [2023-11-21 18:45:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 114 transitions. [2023-11-21 18:45:53,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 18:45:53,244 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 5 iterations. [2023-11-21 18:45:53,254 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-21 18:45:53,349 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,353 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,354 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,354 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,354 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,354 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,354 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,355 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,355 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,355 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,355 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,355 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,355 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,356 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:45:53,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:45:53 ImpRootNode [2023-11-21 18:45:53,356 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:45:53,357 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:45:53,357 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:45:53,357 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:45:53,358 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:45:51" (3/4) ... [2023-11-21 18:45:53,360 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 18:45:53,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure Id_MCDC_89 [2023-11-21 18:45:53,365 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure avoid_zero [2023-11-21 18:45:53,365 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure Id_MCDC_95 [2023-11-21 18:45:53,377 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 91 nodes and edges [2023-11-21 18:45:53,379 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-21 18:45:53,380 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-21 18:45:53,382 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 18:45:53,383 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:45:53,385 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:45:53,591 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/witness.graphml [2023-11-21 18:45:53,591 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/witness.yml [2023-11-21 18:45:53,592 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:45:53,593 INFO L158 Benchmark]: Toolchain (without parser) took 4395.35ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 138.0MB in the beginning and 133.7MB in the end (delta: 4.3MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2023-11-21 18:45:53,593 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:45:53,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.97ms. Allocated memory is still 167.8MB. Free memory was 137.7MB in the beginning and 119.3MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:45:53,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.87ms. Allocated memory is still 167.8MB. Free memory was 119.3MB in the beginning and 135.5MB in the end (delta: -16.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 18:45:53,594 INFO L158 Benchmark]: Boogie Preprocessor took 66.41ms. Allocated memory is still 167.8MB. Free memory was 135.5MB in the beginning and 132.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:45:53,595 INFO L158 Benchmark]: RCFGBuilder took 1418.27ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 132.1MB in the beginning and 158.8MB in the end (delta: -26.7MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2023-11-21 18:45:53,595 INFO L158 Benchmark]: CodeCheck took 2074.83ms. Allocated memory is still 201.3MB. Free memory was 158.8MB in the beginning and 144.2MB in the end (delta: 14.6MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-11-21 18:45:53,596 INFO L158 Benchmark]: Witness Printer took 234.95ms. Allocated memory is still 201.3MB. Free memory was 144.2MB in the beginning and 133.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 18:45:53,598 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 4 procedures, 65 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 97 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 431 GetRequests, 376 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 14/24 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: 354]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 354]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 378]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 378]: 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: 249]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 352]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 406]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 427]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 358]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 226]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 376]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 300]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 331]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 417]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 270]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 308]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 297]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.97ms. Allocated memory is still 167.8MB. Free memory was 137.7MB in the beginning and 119.3MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.87ms. Allocated memory is still 167.8MB. Free memory was 119.3MB in the beginning and 135.5MB in the end (delta: -16.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.41ms. Allocated memory is still 167.8MB. Free memory was 135.5MB in the beginning and 132.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1418.27ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 132.1MB in the beginning and 158.8MB in the end (delta: -26.7MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. * CodeCheck took 2074.83ms. Allocated memory is still 201.3MB. Free memory was 158.8MB in the beginning and 144.2MB in the end (delta: 14.6MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Witness Printer took 234.95ms. Allocated memory is still 201.3MB. Free memory was 144.2MB in the beginning and 133.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-21 18:45:53,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66620ff6-74ce-4ec5-9765-adac1340d070/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE