./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi --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 ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:05:09,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:05:10,088 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 23:05:10,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:05:10,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:05:10,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:05:10,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:05:10,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:05:10,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:05:10,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:05:10,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:05:10,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:05:10,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:05:10,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:05:10,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:05:10,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:05:10,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:05:10,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:05:10,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:05:10,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:05:10,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:05:10,156 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:05:10,157 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:05:10,158 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:05:10,158 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:05:10,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:05:10,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:05:10,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:05:10,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:05:10,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:05:10,162 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:05:10,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:05:10,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:05:10,163 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_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 [2023-11-24 23:05:10,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:05:10,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:05:10,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:05:10,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:05:10,478 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:05:10,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-11-24 23:05:13,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:05:13,714 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:05:13,715 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-11-24 23:05:13,723 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data/fbfac52fc/3c3d8a5cade945099f460575113e843d/FLAG036d2ac38 [2023-11-24 23:05:13,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data/fbfac52fc/3c3d8a5cade945099f460575113e843d [2023-11-24 23:05:13,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:05:13,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:05:13,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:05:13,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:05:13,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:05:13,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:05:13" (1/1) ... [2023-11-24 23:05:13,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c07189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:13, skipping insertion in model container [2023-11-24 23:05:13,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:05:13" (1/1) ... [2023-11-24 23:05:13,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:05:13,976 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_337dcb43-ac12-401f-97ee-55c78ed0e2f0/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-11-24 23:05:13,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:05:13,993 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:05:14,008 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_337dcb43-ac12-401f-97ee-55c78ed0e2f0/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-11-24 23:05:14,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:05:14,025 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:05:14,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14 WrapperNode [2023-11-24 23:05:14,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:05:14,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:05:14,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:05:14,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:05:14,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,059 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-11-24 23:05:14,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:05:14,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:05:14,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:05:14,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:05:14,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:05:14,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:05:14,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:05:14,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:05:14,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:05:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:05:14,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:05:14,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:05:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:05:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:05:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:05:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:05:14,228 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:05:14,230 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:05:14,359 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:05:14,377 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:05:14,378 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:05:14,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:05:14 BoogieIcfgContainer [2023-11-24 23:05:14,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:05:14,381 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:05:14,381 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:05:14,392 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:05:14,392 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:05:14" (1/1) ... [2023-11-24 23:05:14,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:05:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-11-24 23:05:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-11-24 23:05:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:05:14,453 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2023-11-24 23:05:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-11-24 23:05:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:05:14,875 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:14,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 9 states and 10 transitions. [2023-11-24 23:05:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-24 23:05:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:05:14,989 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2023-11-24 23:05:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-11-24 23:05:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:05:15,177 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2023-11-24 23:05:15,397 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-24 23:05:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:05:15,397 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:15,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2023-11-24 23:05:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-24 23:05:15,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:05:15,569 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2023-11-24 23:05:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-24 23:05:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:05:15,704 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 14 states and 15 transitions. [2023-11-24 23:05:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-24 23:05:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:05:15,894 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:15,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 15 states and 16 transitions. [2023-11-24 23:05:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-24 23:05:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:05:16,082 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 16 states and 17 transitions. [2023-11-24 23:05:16,303 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-11-24 23:05:16,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:05:16,303 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:16,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-24 23:05:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-24 23:05:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:05:16,517 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:05:16,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:05:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:05:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:05:16,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:05:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:05:16,629 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2023-11-24 23:05:16,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:05:16 ImpRootNode [2023-11-24 23:05:16,672 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:05:16,673 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:05:16,673 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:05:16,673 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:05:16,674 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:05:14" (3/4) ... [2023-11-24 23:05:16,675 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:05:16,676 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:05:16,678 INFO L158 Benchmark]: Toolchain (without parser) took 2929.34ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 68.3MB in the beginning and 100.7MB in the end (delta: -32.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:05:16,679 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory was 107.9MB in the beginning and 107.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:05:16,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.10ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 68.0MB in the beginning and 125.3MB in the end (delta: -57.2MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2023-11-24 23:05:16,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 161.5MB. Free memory was 125.3MB in the beginning and 123.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:05:16,681 INFO L158 Benchmark]: Boogie Preprocessor took 21.06ms. Allocated memory is still 161.5MB. Free memory was 123.9MB in the beginning and 122.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:05:16,681 INFO L158 Benchmark]: RCFGBuilder took 297.96ms. Allocated memory is still 161.5MB. Free memory was 122.4MB in the beginning and 112.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:05:16,682 INFO L158 Benchmark]: CodeCheck took 2291.55ms. Allocated memory is still 161.5MB. Free memory was 112.7MB in the beginning and 101.8MB in the end (delta: 10.9MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-11-24 23:05:16,683 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 161.5MB. Free memory was 101.8MB in the beginning and 100.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:05:16,686 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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 211 mSolverCounterUnsat, 30 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 592 GetRequests, 509 SyntacticMatches, 45 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/165 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: 29]: 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 someBinaryDOUBLEComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L1] int __return_main; [L9] float main__tick = 0.10000000149011612; [L10] float main__time = 0.0; [L11] int main__i; [L12] main__i = 0 VAL [__return_main=0, main__i=0, main__tick=2500000037252903/25000000000000000, main__time=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=1, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=2, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=3, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=4, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=5, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=6, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=7, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=8, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=9, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L14] COND FALSE !(main__i < 10) [L23] int __tmp_1; [L24] __tmp_1 = main__time != 1.0 [L25] int __VERIFIER_assert__cond; [L26] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L27] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L29] reach_error() VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__i=10, main__tick=2500000037252903/25000000000000000] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory was 107.9MB in the beginning and 107.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.10ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 68.0MB in the beginning and 125.3MB in the end (delta: -57.2MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.67ms. Allocated memory is still 161.5MB. Free memory was 125.3MB in the beginning and 123.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.06ms. Allocated memory is still 161.5MB. Free memory was 123.9MB in the beginning and 122.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.96ms. Allocated memory is still 161.5MB. Free memory was 122.4MB in the beginning and 112.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 2291.55ms. Allocated memory is still 161.5MB. Free memory was 112.7MB in the beginning and 101.8MB in the end (delta: 10.9MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 161.5MB. Free memory was 101.8MB in the beginning and 100.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:05:16,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/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 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_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi --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 ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:05:19,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:05:19,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2023-11-24 23:05:19,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:05:19,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:05:19,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:05:19,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:05:19,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:05:19,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:05:19,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:05:19,673 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:05:19,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:05:19,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:05:19,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:05:19,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:05:19,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:05:19,678 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:05:19,678 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:05:19,679 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:05:19,679 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:05:19,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:05:19,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:05:19,681 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:05:19,681 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:05:19,682 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:05:19,682 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:19,683 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-24 23:05:19,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:05:19,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:05:19,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:05:19,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:05:19,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:05:19,686 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:05:19,687 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:19,687 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:05:19,688 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-24 23:05:19,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:05:19,688 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_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 [2023-11-24 23:05:20,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:05:20,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:05:20,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:05:20,164 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:05:20,165 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:05:20,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-11-24 23:05:23,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:05:23,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:05:23,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2023-11-24 23:05:23,604 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data/8f3893acf/a3d67ebcbef14310a8ef9c6843e1f520/FLAG276647db3 [2023-11-24 23:05:23,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/data/8f3893acf/a3d67ebcbef14310a8ef9c6843e1f520 [2023-11-24 23:05:23,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:05:23,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:05:23,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:05:23,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:05:23,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:05:23,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:23,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6599c07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23, skipping insertion in model container [2023-11-24 23:05:23,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:23,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:05:23,884 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_337dcb43-ac12-401f-97ee-55c78ed0e2f0/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-11-24 23:05:23,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:05:23,917 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:05:23,939 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_337dcb43-ac12-401f-97ee-55c78ed0e2f0/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2023-11-24 23:05:23,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:05:23,966 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:05:23,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23 WrapperNode [2023-11-24 23:05:23,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:05:23,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:05:23,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:05:23,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:05:23,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:23,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,014 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-11-24 23:05:24,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:05:24,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:05:24,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:05:24,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:05:24,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:05:24,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:05:24,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:05:24,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:05:24,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:05:23" (1/1) ... [2023-11-24 23:05:24,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:05:24,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:05:24,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:05:24,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:05:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:05:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:05:24,283 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:05:24,286 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:05:24,587 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:05:24,623 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:05:24,626 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:05:24,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:05:24 BoogieIcfgContainer [2023-11-24 23:05:24,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:05:24,629 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:05:24,630 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:05:24,641 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:05:24,641 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:05:24" (1/1) ... [2023-11-24 23:05:24,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:05:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-11-24 23:05:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-11-24 23:05:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:05:24,740 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:24,740 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:24,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:24,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:24,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-24 23:05:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:24,904 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:24,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:05:24,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:25,002 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-24 23:05:25,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:05:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2023-11-24 23:05:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-11-24 23:05:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:05:25,376 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:25,376 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:25,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:25,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:25,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-24 23:05:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:25,587 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:25,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:05:25,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:25,682 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-24 23:05:25,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2023-11-24 23:05:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 9 states and 10 transitions. [2023-11-24 23:05:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-24 23:05:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:05:26,353 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:26,353 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:26,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:26,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:26,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-24 23:05:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:26,587 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:26,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:05:26,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:26,683 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (4)] Exception during sending of exit command (exit): Broken pipe [2023-11-24 23:05:26,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:05:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2023-11-24 23:05:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-11-24 23:05:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:05:27,322 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:27,322 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:27,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:27,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:27,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-24 23:05:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:27,566 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:27,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:05:27,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:27,687 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (5)] Exception during sending of exit command (exit): Broken pipe [2023-11-24 23:05:27,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:05:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2023-11-24 23:05:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-24 23:05:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:05:28,287 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:28,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:28,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-24 23:05:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:28,581 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:28,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:05:28,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:28,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-11-24 23:05:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2023-11-24 23:05:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-24 23:05:29,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:05:29,427 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:29,427 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:29,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:29,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:29,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-24 23:05:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:29,769 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:29,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:05:29,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:29,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:05:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2023-11-24 23:05:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-24 23:05:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:05:30,938 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:30,938 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:30,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:30,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:30,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-24 23:05:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:31,407 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:31,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:05:31,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:31,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-11-24 23:05:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 14 states and 15 transitions. [2023-11-24 23:05:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-24 23:05:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:05:32,453 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:32,454 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:32,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:32,455 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:32,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-24 23:05:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:32,853 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:32,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:05:32,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:33,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:05:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 15 states and 16 transitions. [2023-11-24 23:05:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-24 23:05:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:05:33,826 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:33,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:33,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:33,830 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:33,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-24 23:05:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:34,234 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:34,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:05:34,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:34,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:05:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 16 states and 17 transitions. [2023-11-24 23:05:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-11-24 23:05:35,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:05:35,463 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:35,464 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:35,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:35,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:35,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-24 23:05:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:36,094 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:36,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:05:36,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:05:36,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-11-24 23:05:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 17 states and 18 transitions. [2023-11-24 23:05:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-11-24 23:05:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:05:37,363 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:37,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:05:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:05:37,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:05:37,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337dcb43-ac12-401f-97ee-55c78ed0e2f0/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-24 23:05:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:38,256 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:05:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:44,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 23:05:44,937 INFO L285 TraceCheckSpWp]: Computing forward predicates...