./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/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 64bit --witnessprinter.graph.data.programhash a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:22:51,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:22:52,021 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-64bit-Kojak_Default.epf [2023-11-19 03:22:52,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:22:52,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:22:52,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:22:52,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:22:52,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:22:52,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:22:52,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:22:52,077 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:22:52,077 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:22:52,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:22:52,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:22:52,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:22:52,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:22:52,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:22:52,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:22:52,081 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:22:52,081 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:22:52,081 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:22:52,082 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:22:52,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:22:52,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:22:52,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:22:52,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:22:52,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:22:52,085 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:22:52,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:22:52,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:22:52,086 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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb [2023-11-19 03:22:52,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:22:52,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:22:52,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:22:52,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:22:52,452 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:22:52,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-11-19 03:22:55,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:22:55,816 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:22:55,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-11-19 03:22:55,827 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data/e87c236fb/5c40bcfb67284ec8959db0e3366143df/FLAG54f0ec041 [2023-11-19 03:22:55,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data/e87c236fb/5c40bcfb67284ec8959db0e3366143df [2023-11-19 03:22:55,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:22:55,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:22:55,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:22:55,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:22:55,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:22:55,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:22:55" (1/1) ... [2023-11-19 03:22:55,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd180b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:55, skipping insertion in model container [2023-11-19 03:22:55,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:22:55" (1/1) ... [2023-11-19 03:22:55,899 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:22:56,070 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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-11-19 03:22:56,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:22:56,120 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:22:56,134 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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-11-19 03:22:56,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:22:56,167 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:22:56,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56 WrapperNode [2023-11-19 03:22:56,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:22:56,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:22:56,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:22:56,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:22:56,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,227 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 110 [2023-11-19 03:22:56,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:22:56,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:22:56,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:22:56,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:22:56,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:22:56,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:22:56,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:22:56,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:22:56,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:22:56" (1/1) ... [2023-11-19 03:22:56,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:22:56,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:22:56,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:22:56,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:22:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:22:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:22:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:22:56,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:22:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 03:22:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 03:22:56,443 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:22:56,445 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:22:56,857 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:22:57,006 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:22:57,006 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 03:22:57,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:22:57 BoogieIcfgContainer [2023-11-19 03:22:57,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:22:57,013 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:22:57,013 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:22:57,023 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:22:57,024 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:22:57" (1/1) ... [2023-11-19 03:22:57,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:22:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:22:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2023-11-19 03:22:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-11-19 03:22:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 03:22:57,088 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:22:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:22:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:22:57,804 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 03:22:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:22:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 16 states and 21 transitions. [2023-11-19 03:22:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-11-19 03:22:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 03:22:57,919 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:22:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:22:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:22:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:22:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:22:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 20 states and 31 transitions. [2023-11-19 03:22:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 31 transitions. [2023-11-19 03:22:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 03:22:58,945 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:22:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:22:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:22:59,059 WARN L260 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-19 03:22:59,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:22:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 03:23:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 26 states and 47 transitions. [2023-11-19 03:23:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 47 transitions. [2023-11-19 03:23:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 03:23:01,045 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:01,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-19 03:23:01,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 03:23:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 33 states and 66 transitions. [2023-11-19 03:23:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 66 transitions. [2023-11-19 03:23:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 03:23:03,882 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:03,991 WARN L260 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 86 conjunts are in the unsatisfiable core [2023-11-19 03:23:03,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 03:23:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 34 states and 67 transitions. [2023-11-19 03:23:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 67 transitions. [2023-11-19 03:23:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 03:23:05,388 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:05,529 WARN L260 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-19 03:23:05,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 03:23:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 40 states and 88 transitions. [2023-11-19 03:23:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 88 transitions. [2023-11-19 03:23:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 03:23:08,919 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:08,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:09,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-19 03:23:09,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 03:23:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 44 states and 102 transitions. [2023-11-19 03:23:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 102 transitions. [2023-11-19 03:23:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 03:23:12,926 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:12,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:13,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 104 conjunts are in the unsatisfiable core [2023-11-19 03:23:13,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 03:23:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 45 states and 103 transitions. [2023-11-19 03:23:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 103 transitions. [2023-11-19 03:23:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 03:23:13,968 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:14,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-19 03:23:14,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 03:23:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 51 states and 124 transitions. [2023-11-19 03:23:17,462 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 124 transitions. [2023-11-19 03:23:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 03:23:17,464 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:17,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-19 03:23:17,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 03:23:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 54 states and 131 transitions. [2023-11-19 03:23:19,914 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 131 transitions. [2023-11-19 03:23:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 03:23:19,916 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:23:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:23:20,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:23:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:23:20,574 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2023-11-19 03:23:20,631 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 03:23:20,632 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 03:23:20,632 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 03:23:20,632 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 03:23:20,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:23:20 ImpRootNode [2023-11-19 03:23:20,645 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:23:20,645 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:23:20,646 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:23:20,646 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:23:20,646 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:22:57" (3/4) ... [2023-11-19 03:23:20,649 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:23:20,650 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:23:20,651 INFO L158 Benchmark]: Toolchain (without parser) took 24801.75ms. Allocated memory was 165.7MB in the beginning and 358.6MB in the end (delta: 192.9MB). Free memory was 122.2MB in the beginning and 192.3MB in the end (delta: -70.2MB). Peak memory consumption was 124.7MB. Max. memory is 16.1GB. [2023-11-19 03:23:20,652 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory was 82.9MB in the beginning and 82.9MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:23:20,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.26ms. Allocated memory is still 165.7MB. Free memory was 122.2MB in the beginning and 110.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 03:23:20,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.72ms. Allocated memory is still 165.7MB. Free memory was 110.5MB in the beginning and 107.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:23:20,654 INFO L158 Benchmark]: Boogie Preprocessor took 34.70ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 105.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:23:20,655 INFO L158 Benchmark]: RCFGBuilder took 747.62ms. Allocated memory is still 165.7MB. Free memory was 105.9MB in the beginning and 118.7MB in the end (delta: -12.9MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-11-19 03:23:20,656 INFO L158 Benchmark]: CodeCheck took 23632.36ms. Allocated memory was 165.7MB in the beginning and 358.6MB in the end (delta: 192.9MB). Free memory was 118.7MB in the beginning and 192.3MB in the end (delta: -73.6MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. [2023-11-19 03:23:20,656 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 358.6MB. Free memory is still 192.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:23:20,661 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 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.5s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 211 mSDsluCounter, 154 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2023 IncrementalHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 120 mSDtfsCounter, 2023 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2815 GetRequests, 2533 SyntacticMatches, 80 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19518 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 2278 SizeOfPredicates, 323 NumberOfNonLiveVariables, 1549 ConjunctsInSsa, 743 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 252/409 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 bitwiseAnd at line 68. Possible FailurePath: [L34] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L35] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L37] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 1); [L38] const SORT_12 msb_SORT_12 = (SORT_12)1 << (1 - 1); [L40] const SORT_1 var_2 = 1; [L41] const SORT_1 var_11 = mask_SORT_1; [L42] const SORT_1 var_16 = 3; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L45] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L46] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 init_5_arg_1 = var_2; [L49] state_3 = init_5_arg_1 [L50] SORT_1 init_6_arg_1 = var_2; [L51] state_4 = init_6_arg_1 VAL [init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] EXPR var_7 & mask_SORT_1 [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] EXPR var_7 & mask_SORT_1 [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] EXPR var_7 & mask_SORT_1 [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=1, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=6, var_15_arg_0=6, var_16=3, var_17=1, var_17_arg_0=4, var_17_arg_1=3, var_18=1, var_18_arg_0=1, var_18_arg_1=6, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=0] [L29] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L29] reach_error() VAL [\old(cond)=0, cond=0] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory was 82.9MB in the beginning and 82.9MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.26ms. Allocated memory is still 165.7MB. Free memory was 122.2MB in the beginning and 110.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.72ms. Allocated memory is still 165.7MB. Free memory was 110.5MB in the beginning and 107.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.70ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 105.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 747.62ms. Allocated memory is still 165.7MB. Free memory was 105.9MB in the beginning and 118.7MB in the end (delta: -12.9MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * CodeCheck took 23632.36ms. Allocated memory was 165.7MB in the beginning and 358.6MB in the end (delta: 192.9MB). Free memory was 118.7MB in the beginning and 192.3MB in the end (delta: -73.6MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 358.6MB. Free memory is still 192.3MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:23:20,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/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 64bit --witnessprinter.graph.data.programhash a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:23:23,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:23:23,503 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-64bit-Kojak_Bitvector.epf [2023-11-19 03:23:23,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:23:23,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:23:23,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:23:23,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:23:23,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:23:23,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:23:23,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:23:23,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:23:23,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:23:23,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:23:23,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:23:23,574 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:23:23,574 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:23:23,575 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:23:23,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:23:23,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:23:23,577 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:23:23,578 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:23:23,578 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:23:23,579 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:23,579 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:23:23,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:23:23,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:23:23,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:23:23,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:23:23,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:23:23,581 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:23:23,583 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:23,583 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:23:23,583 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:23:23,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:23:23,584 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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb [2023-11-19 03:23:24,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:23:24,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:23:24,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:23:24,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:23:24,078 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:23:24,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-11-19 03:23:27,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:23:27,725 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:23:27,725 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-11-19 03:23:27,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data/3a3042595/f808756de8a94a4488ab6829cfbda470/FLAGa17f761fb [2023-11-19 03:23:27,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/data/3a3042595/f808756de8a94a4488ab6829cfbda470 [2023-11-19 03:23:27,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:23:27,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:23:27,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:23:27,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:23:27,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:23:27,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:23:27" (1/1) ... [2023-11-19 03:23:27,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17496479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:27, skipping insertion in model container [2023-11-19 03:23:27,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:23:27" (1/1) ... [2023-11-19 03:23:27,792 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:23:27,983 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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-11-19 03:23:28,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:23:28,045 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:23:28,063 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_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-11-19 03:23:28,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:23:28,112 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:23:28,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28 WrapperNode [2023-11-19 03:23:28,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:23:28,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:23:28,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:23:28,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:23:28,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,166 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-11-19 03:23:28,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:23:28,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:23:28,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:23:28,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:23:28,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:23:28,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:23:28,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:23:28,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:23:28,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:23:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:23:28,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:23:28,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:23:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:23:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:23:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:23:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:23:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 03:23:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 03:23:28,437 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:23:28,440 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:23:28,639 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:23:28,691 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:23:28,695 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 03:23:28,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:23:28 BoogieIcfgContainer [2023-11-19 03:23:28,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:23:28,702 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:23:28,702 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:23:28,713 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:23:28,713 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:23:28" (1/1) ... [2023-11-19 03:23:28,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:23:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2023-11-19 03:23:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-11-19 03:23:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 03:23:28,782 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:28,783 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:23:28,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:23:28,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:23:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:28,932 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:23:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:28,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 03:23:28,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:29,189 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 03:23:29,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-19 03:23:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 16 states and 21 transitions. [2023-11-19 03:23:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-11-19 03:23:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 03:23:29,347 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:29,347 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:29,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:23:29,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:23:29,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 03:23:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:29,445 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:23:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:29,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 03:23:29,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:23:29,658 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:23:29,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2023-11-19 03:23:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 22 states and 32 transitions. [2023-11-19 03:23:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2023-11-19 03:23:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 03:23:30,255 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:30,255 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:30,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:23:30,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:23:30,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 03:23:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:30,348 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:23:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:30,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 03:23:30,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 03:23:30,667 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (4)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:23:30,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-19 03:23:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 28 states and 45 transitions. [2023-11-19 03:23:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2023-11-19 03:23:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 03:23:31,650 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:31,650 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:31,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:23:31,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:23:31,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-19 03:23:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:31,751 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:23:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:31,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 03:23:31,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 03:23:32,061 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (5)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:23:32,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-19 03:23:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 33 states and 56 transitions. [2023-11-19 03:23:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2023-11-19 03:23:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 03:23:33,127 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:33,128 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:33,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:23:33,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:23:33,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-19 03:23:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:33,235 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:23:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:33,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 03:23:33,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 03:23:33,573 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (6)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:23:33,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-19 03:23:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 39 states and 69 transitions. [2023-11-19 03:23:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 69 transitions. [2023-11-19 03:23:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 03:23:34,964 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:34,964 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:34,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:23:34,965 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:23:34,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 03:23:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:35,094 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:23:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:35,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 03:23:35,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 03:23:35,623 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (7)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:23:35,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 03:23:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:23:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 44 states and 85 transitions. [2023-11-19 03:23:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 85 transitions. [2023-11-19 03:23:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 03:23:37,813 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:23:37,813 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:23:37,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:23:37,815 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:23:37,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 03:23:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:37,953 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:23:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:23:37,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 03:23:38,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:23:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 37 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 03:23:38,386 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (8)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:23:38,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b2d1cd9-6cac-483b-a26f-4019e8dd7556/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0