./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8b1eb5a7109aada0c5a8e0cf18025c738de8d1a2cd1a38b7a389d7c7a6495a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:11:05,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:11:05,330 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-19 03:11:05,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:11:05,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:11:05,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:11:05,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:11:05,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:11:05,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:11:05,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:11:05,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:11:05,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:11:05,399 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:11:05,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:11:05,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:11:05,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:11:05,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:11:05,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:11:05,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:11:05,404 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:11:05,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:11:05,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:11:05,406 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:11:05,406 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:11:05,407 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:11:05,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:11:05,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:11:05,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:11:05,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:11:05,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:11:05,411 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:11:05,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:11:05,412 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:11:05,412 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_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8b1eb5a7109aada0c5a8e0cf18025c738de8d1a2cd1a38b7a389d7c7a6495a7 [2023-11-19 03:11:05,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:11:05,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:11:05,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:11:05,756 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:11:05,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:11:05,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c [2023-11-19 03:11:08,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:11:09,149 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:11:09,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c [2023-11-19 03:11:09,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data/26650d1c5/4df7df18478a4933a8fcbb13488fee47/FLAGfb3900889 [2023-11-19 03:11:09,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data/26650d1c5/4df7df18478a4933a8fcbb13488fee47 [2023-11-19 03:11:09,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:11:09,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:11:09,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:11:09,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:11:09,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:11:09,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1de9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09, skipping insertion in model container [2023-11-19 03:11:09,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,238 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:11:09,494 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c[1314,1327] [2023-11-19 03:11:09,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:11:09,528 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:11:09,570 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c[1314,1327] [2023-11-19 03:11:09,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:11:09,606 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:11:09,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09 WrapperNode [2023-11-19 03:11:09,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:11:09,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:11:09,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:11:09,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:11:09,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,680 INFO L138 Inliner]: procedures = 18, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 110 [2023-11-19 03:11:09,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:11:09,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:11:09,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:11:09,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:11:09,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:11:09,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:11:09,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:11:09,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:11:09,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:09" (1/1) ... [2023-11-19 03:11:09,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:11:09,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:11:09,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:11:09,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:11:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:11:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:11:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:11:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 03:11:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:11:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:11:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 03:11:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:11:09,915 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:11:09,917 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:11:10,091 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:11:10,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:11:10,115 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:11:10,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:10 BoogieIcfgContainer [2023-11-19 03:11:10,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:11:10,121 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:11:10,121 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:11:10,134 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:11:10,134 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:10" (1/1) ... [2023-11-19 03:11:10,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:11:10,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:11:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 16 states and 23 transitions. [2023-11-19 03:11:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 23 transitions. [2023-11-19 03:11:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:11:10,214 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:11:10,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:11:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:11:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:11:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-19 03:11:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-19 03:11:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:11:10,659 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:11:10,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:11:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:11:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:11:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 19 states and 24 transitions. [2023-11-19 03:11:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-11-19 03:11:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 03:11:10,868 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:11:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:11:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:10,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:11:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:11,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:11:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:11,046 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2023-11-19 03:11:11,078 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-19 03:11:11,080 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-19 03:11:11,081 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-19 03:11:11,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:11:11 ImpRootNode [2023-11-19 03:11:11,088 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:11:11,089 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:11:11,089 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:11:11,089 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:11:11,090 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:10" (3/4) ... [2023-11-19 03:11:11,092 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:11:11,093 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:11:11,094 INFO L158 Benchmark]: Toolchain (without parser) took 1910.59ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 85.2MB in the beginning and 114.9MB in the end (delta: -29.8MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-11-19 03:11:11,095 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:11:11,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.01ms. Allocated memory is still 132.1MB. Free memory was 84.7MB in the beginning and 73.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 03:11:11,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.51ms. Allocated memory is still 132.1MB. Free memory was 73.3MB in the beginning and 71.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:11:11,097 INFO L158 Benchmark]: Boogie Preprocessor took 58.11ms. Allocated memory is still 132.1MB. Free memory was 71.6MB in the beginning and 70.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:11:11,098 INFO L158 Benchmark]: RCFGBuilder took 379.57ms. Allocated memory is still 132.1MB. Free memory was 70.5MB in the beginning and 57.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 03:11:11,099 INFO L158 Benchmark]: CodeCheck took 967.13ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 57.9MB in the beginning and 114.9MB in the end (delta: -57.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:11:11,099 INFO L158 Benchmark]: Witness Printer took 4.47ms. Allocated memory is still 169.9MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:11:11,103 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 28 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - UnprovableResult [Line: 51]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L1] int __return_main; [L12] int __return_125; [L15] int main__i; [L16] float main__z; [L17] float main__t; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L20] main__t = __VERIFIER_nondet_float() [L21] int main____CPAchecker_TMP_0; [L22] EXPR main__min[0] VAL [__return_125=0, __return_main=0, main__max={22116:0}, main__min={22117:0}] [L22] COND TRUE main__t >= (main__min[0]) [L24] EXPR main__max[4UL] VAL [__return_125=0, __return_main=0, main__max={22116:0}, main__min={22117:0}] [L24] COND TRUE main__t <= (main__max[4UL]) [L26] main____CPAchecker_TMP_0 = 1 VAL [__return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__max={22116:0}, main__min={22117:0}] [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 VAL [__return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={22116:0}, main__min={22117:0}] [L31] COND TRUE main__i < 5UL [L33] EXPR main__max[main__i] VAL [__return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={22116:0}, main__min={22117:0}] [L33] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; VAL [__return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={22116:0}, main__min={22117:0}] [L38] COND FALSE !(main__z >= 0.0) VAL [__return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={22116:0}, main__min={22117:0}] [L64] main____CPAchecker_TMP_1 = 0 VAL [__return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={22116:0}, main__min={22117:0}] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_125=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={22116:0}, main__min={22117:0}] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_125=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={22116:0}, main__min={22117:0}] [L51] reach_error() VAL [__VERIFIER_assert__cond=0, __return_125=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={22116:0}, main__min={22117:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.01ms. Allocated memory is still 132.1MB. Free memory was 84.7MB in the beginning and 73.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.51ms. Allocated memory is still 132.1MB. Free memory was 73.3MB in the beginning and 71.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.11ms. Allocated memory is still 132.1MB. Free memory was 71.6MB in the beginning and 70.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.57ms. Allocated memory is still 132.1MB. Free memory was 70.5MB in the beginning and 57.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 967.13ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 57.9MB in the beginning and 114.9MB in the end (delta: -57.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.47ms. Allocated memory is still 169.9MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:11:11,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8b1eb5a7109aada0c5a8e0cf18025c738de8d1a2cd1a38b7a389d7c7a6495a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:11:13,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:11:13,949 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2023-11-19 03:11:14,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:11:14,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:11:14,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:11:14,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:11:14,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:11:14,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:11:14,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:11:14,015 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:11:14,015 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:11:14,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:11:14,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:11:14,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:11:14,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:11:14,019 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:11:14,019 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:11:14,019 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:11:14,020 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:11:14,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:11:14,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:11:14,021 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:11:14,022 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:11:14,022 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:11:14,023 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:11:14,023 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:11:14,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:11:14,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:11:14,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:11:14,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:11:14,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:11:14,026 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:11:14,027 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:11:14,027 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:11:14,027 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:11:14,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:11:14,028 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8b1eb5a7109aada0c5a8e0cf18025c738de8d1a2cd1a38b7a389d7c7a6495a7 [2023-11-19 03:11:14,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:11:14,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:11:14,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:11:14,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:11:14,459 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:11:14,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c [2023-11-19 03:11:17,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:11:17,915 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:11:17,916 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c [2023-11-19 03:11:17,928 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data/7c27da094/25f574b8b148448f8f932a8f37d3a046/FLAGde77290b3 [2023-11-19 03:11:17,941 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/data/7c27da094/25f574b8b148448f8f932a8f37d3a046 [2023-11-19 03:11:17,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:11:17,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:11:17,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:11:17,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:11:17,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:11:17,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:11:17" (1/1) ... [2023-11-19 03:11:17,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75369aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:17, skipping insertion in model container [2023-11-19 03:11:17,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:11:17" (1/1) ... [2023-11-19 03:11:17,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:11:18,177 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c[1314,1327] [2023-11-19 03:11:18,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:11:18,217 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:11:18,269 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c[1314,1327] [2023-11-19 03:11:18,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:11:18,308 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:11:18,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18 WrapperNode [2023-11-19 03:11:18,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:11:18,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:11:18,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:11:18,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:11:18,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,383 INFO L138 Inliner]: procedures = 19, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2023-11-19 03:11:18,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:11:18,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:11:18,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:11:18,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:11:18,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:11:18,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:11:18,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:11:18,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:11:18,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:18" (1/1) ... [2023-11-19 03:11:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:11:18,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:11:18,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:11:18,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:11:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:11:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-11-19 03:11:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:11:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:11:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-19 03:11:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:11:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:11:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:11:18,678 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:11:18,680 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:11:19,616 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:11:19,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:11:19,657 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:11:19,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:19 BoogieIcfgContainer [2023-11-19 03:11:19,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:11:19,662 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:11:19,663 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:11:19,674 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:11:19,674 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:19" (1/1) ... [2023-11-19 03:11:19,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:11:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:11:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 16 states and 23 transitions. [2023-11-19 03:11:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 23 transitions. [2023-11-19 03:11:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:11:19,796 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:11:19,797 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:11:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:11:19,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:11:19,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:11:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:19,997 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:11:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:20,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:11:20,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:11:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:11:20,160 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:11:20,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-19 03:11:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:11:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 24 transitions. [2023-11-19 03:11:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-11-19 03:11:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:11:20,362 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:11:20,362 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:11:20,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:11:20,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:11:20,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 03:11:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:20,556 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:11:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:20,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:11:20,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:11:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:11:20,794 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:11:20,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-19 03:11:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:11:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2023-11-19 03:11:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2023-11-19 03:11:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 03:11:20,891 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:11:20,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:11:20,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:11:20,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:11:20,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 03:11:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:21,790 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:11:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:11:27,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 03:11:27,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:11:30,068 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 03:11:30,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 75 [2023-11-19 03:12:01,693 WARN L293 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-19 03:12:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:12:09,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d26b76d-449a-497a-83f8-159ad98ea3e8/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0