./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9 --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 3d45407ef12a8178e0e3b196ea1d71fb29603f6727061734a3131e6c6462a652 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 00:50:53,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 00:50:53,949 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Default.epf [2023-12-03 00:50:53,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 00:50:53,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 00:50:53,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 00:50:53,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 00:50:53,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 00:50:53,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 00:50:53,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 00:50:53,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 00:50:53,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 00:50:53,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 00:50:53,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 00:50:53,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 00:50:53,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 00:50:53,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 00:50:53,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 00:50:53,991 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 00:50:53,992 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 00:50:53,992 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 00:50:53,993 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 00:50:53,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 00:50:53,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:50:53,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 00:50:53,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 00:50:53,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 00:50:53,996 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 00:50:53,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 00:50:54,007 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 00:50:54,008 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d45407ef12a8178e0e3b196ea1d71fb29603f6727061734a3131e6c6462a652 [2023-12-03 00:50:54,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 00:50:54,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 00:50:54,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 00:50:54,261 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 00:50:54,261 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 00:50:54,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c [2023-12-03 00:50:56,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 00:50:57,405 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 00:50:57,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c [2023-12-03 00:50:57,447 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data/5d87ce0ae/ed0f7428dcf2439c9570168ec2427ed5/FLAG73a17dac8 [2023-12-03 00:50:57,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data/5d87ce0ae/ed0f7428dcf2439c9570168ec2427ed5 [2023-12-03 00:50:57,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 00:50:57,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 00:50:57,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 00:50:57,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 00:50:57,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 00:50:57,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:50:57" (1/1) ... [2023-12-03 00:50:57,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1aaf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:57, skipping insertion in model container [2023-12-03 00:50:57,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:50:57" (1/1) ... [2023-12-03 00:50:57,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 00:50:57,849 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c[1177,1190] [2023-12-03 00:50:58,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:50:58,574 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 00:50:58,586 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c[1177,1190] [2023-12-03 00:50:59,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:50:59,217 INFO L206 MainTranslator]: Completed translation [2023-12-03 00:50:59,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59 WrapperNode [2023-12-03 00:50:59,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 00:50:59,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 00:50:59,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 00:50:59,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 00:50:59,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:50:59,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:01,146 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25913 [2023-12-03 00:51:01,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 00:51:01,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 00:51:01,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 00:51:01,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 00:51:01,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:01,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:01,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:01,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:02,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:02,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:02,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:02,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:02,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 00:51:02,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 00:51:02,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 00:51:02,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 00:51:02,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:59" (1/1) ... [2023-12-03 00:51:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:51:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 00:51:02,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 00:51:02,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 00:51:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 00:51:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 00:51:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 00:51:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 00:51:04,288 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 00:51:04,291 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 00:51:17,827 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 00:52:04,830 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 00:52:04,831 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 00:52:04,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:52:04 BoogieIcfgContainer [2023-12-03 00:52:04,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 00:52:04,833 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 00:52:04,833 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 00:52:04,841 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 00:52:04,841 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:52:04" (1/1) ... [2023-12-03 00:52:04,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 00:52:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:52:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-12-03 00:52:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-03 00:52:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 00:52:04,893 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:52:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:52:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:52:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:52:24,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 11.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-03 00:52:34,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-03 00:52:44,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:52:51,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:52:53,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:53:03,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:53:13,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:53:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:53:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2023-12-03 00:53:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-03 00:53:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 00:53:13,381 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:53:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:53:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-03 00:53:27,889 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck has thrown an exception: java.lang.UnsupportedOperationException: Solver said unknown at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:488) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.CFGWalker.runObserver(CFGWalker.java:57) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:166) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-03 00:53:27,892 INFO L158 Benchmark]: Toolchain (without parser) took 150425.56ms. Allocated memory was 165.7MB in the beginning and 8.4GB in the end (delta: 8.2GB). Free memory was 120.8MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-12-03 00:53:27,893 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 00:53:27,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1750.75ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 120.8MB in the beginning and 80.2MB in the end (delta: 40.6MB). Peak memory consumption was 148.1MB. Max. memory is 16.1GB. [2023-12-03 00:53:27,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 1927.07ms. Allocated memory was 245.4MB in the beginning and 813.7MB in the end (delta: 568.3MB). Free memory was 80.2MB in the beginning and 413.4MB in the end (delta: -333.3MB). Peak memory consumption was 295.7MB. Max. memory is 16.1GB. [2023-12-03 00:53:27,895 INFO L158 Benchmark]: Boogie Preprocessor took 1716.30ms. Allocated memory was 813.7MB in the beginning and 2.4GB in the end (delta: 1.6GB). Free memory was 413.4MB in the beginning and 1.9GB in the end (delta: -1.5GB). Peak memory consumption was 213.2MB. Max. memory is 16.1GB. [2023-12-03 00:53:27,895 INFO L158 Benchmark]: RCFGBuilder took 61968.52ms. Allocated memory was 2.4GB in the beginning and 7.9GB in the end (delta: 5.5GB). Free memory was 1.9GB in the beginning and 6.1GB in the end (delta: -4.2GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-12-03 00:53:27,896 INFO L158 Benchmark]: CodeCheck took 83058.10ms. Allocated memory was 7.9GB in the beginning and 8.4GB in the end (delta: 413.1MB). Free memory was 6.1GB in the beginning and 6.7GB in the end (delta: -596.1MB). Peak memory consumption was 301.5MB. Max. memory is 16.1GB. [2023-12-03 00:53:27,899 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - ExceptionOrErrorResult: UnsupportedOperationException: Solver said unknown de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: UnsupportedOperationException: Solver said unknown: de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:488) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1750.75ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 120.8MB in the beginning and 80.2MB in the end (delta: 40.6MB). Peak memory consumption was 148.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 1927.07ms. Allocated memory was 245.4MB in the beginning and 813.7MB in the end (delta: 568.3MB). Free memory was 80.2MB in the beginning and 413.4MB in the end (delta: -333.3MB). Peak memory consumption was 295.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 1716.30ms. Allocated memory was 813.7MB in the beginning and 2.4GB in the end (delta: 1.6GB). Free memory was 413.4MB in the beginning and 1.9GB in the end (delta: -1.5GB). Peak memory consumption was 213.2MB. Max. memory is 16.1GB. * RCFGBuilder took 61968.52ms. Allocated memory was 2.4GB in the beginning and 7.9GB in the end (delta: 5.5GB). Free memory was 1.9GB in the beginning and 6.1GB in the end (delta: -4.2GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * CodeCheck took 83058.10ms. Allocated memory was 7.9GB in the beginning and 8.4GB in the end (delta: 413.1MB). Free memory was 6.1GB in the beginning and 6.7GB in the end (delta: -596.1MB). Peak memory consumption was 301.5MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-03 00:53:28,112 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forcibly destroying the process [2023-12-03 00:53:28,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 137 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9 --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 3d45407ef12a8178e0e3b196ea1d71fb29603f6727061734a3131e6c6462a652 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 00:53:30,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 00:53:30,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Bitvector.epf [2023-12-03 00:53:30,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 00:53:30,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 00:53:30,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 00:53:30,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 00:53:30,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 00:53:30,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 00:53:30,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 00:53:30,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 00:53:30,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 00:53:30,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 00:53:30,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 00:53:30,280 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-03 00:53:30,280 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-03 00:53:30,281 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-03 00:53:30,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 00:53:30,282 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 00:53:30,282 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 00:53:30,283 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 00:53:30,283 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 00:53:30,284 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 00:53:30,284 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-03 00:53:30,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 00:53:30,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:53:30,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 00:53:30,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 00:53:30,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 00:53:30,287 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-03 00:53:30,287 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 00:53:30,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 00:53:30,288 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-03 00:53:30,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-03 00:53:30,289 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d45407ef12a8178e0e3b196ea1d71fb29603f6727061734a3131e6c6462a652 [2023-12-03 00:53:30,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 00:53:30,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 00:53:30,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 00:53:30,599 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 00:53:30,600 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 00:53:30,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c [2023-12-03 00:53:33,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 00:53:33,707 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 00:53:33,708 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c [2023-12-03 00:53:33,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data/d7d1db0d3/29e32c0f61534832b8e490f3c1d8070f/FLAG05bb1359c [2023-12-03 00:53:33,751 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/data/d7d1db0d3/29e32c0f61534832b8e490f3c1d8070f [2023-12-03 00:53:33,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 00:53:33,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 00:53:33,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 00:53:33,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 00:53:33,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 00:53:33,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:53:33" (1/1) ... [2023-12-03 00:53:33,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2785cdf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:33, skipping insertion in model container [2023-12-03 00:53:33,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:53:33" (1/1) ... [2023-12-03 00:53:33,892 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 00:53:34,117 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c[1177,1190] [2023-12-03 00:53:34,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:53:34,715 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 00:53:34,723 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_00607dd6-654d-4b9d-a88b-d75dc4e79264/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop2-back-serstep.c[1177,1190] [2023-12-03 00:53:35,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:53:35,228 INFO L206 MainTranslator]: Completed translation [2023-12-03 00:53:35,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35 WrapperNode [2023-12-03 00:53:35,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 00:53:35,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 00:53:35,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 00:53:35,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 00:53:35,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,580 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 7915 [2023-12-03 00:53:35,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 00:53:35,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 00:53:35,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 00:53:35,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 00:53:35,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:35,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:36,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 00:53:36,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 00:53:36,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 00:53:36,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 00:53:36,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:53:35" (1/1) ... [2023-12-03 00:53:36,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:53:36,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 00:53:36,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 00:53:36,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 00:53:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 00:53:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-03 00:53:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 00:53:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 00:53:37,130 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 00:53:37,133 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 00:54:06,919 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 00:54:07,328 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 00:54:07,328 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 00:54:07,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:54:07 BoogieIcfgContainer [2023-12-03 00:54:07,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 00:54:07,330 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 00:54:07,330 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 00:54:07,338 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 00:54:07,338 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:54:07" (1/1) ... [2023-12-03 00:54:07,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 00:54:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:54:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-12-03 00:54:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-03 00:54:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 00:54:07,400 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:54:07,400 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:54:07,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:54:07,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:54:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-03 00:54:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:54:09,312 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:54:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:54:09,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-03 00:54:09,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:54:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:54:10,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-03 00:54:21,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 11.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:54:31,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:54:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:54:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 8 states and 10 transitions. [2023-12-03 00:54:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-12-03 00:54:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 00:54:31,694 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:54:31,694 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:54:31,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:54:31,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:54:31,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-12-03 00:54:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:54:39,786 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:54:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:54:42,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 7033 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-03 00:54:42,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:54:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:54:43,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2023-12-03 00:54:55,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:55:06,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:55:18,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:55:28,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:55:38,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:55:48,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:55:58,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:56:08,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:56:20,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:56:32,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:56:42,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:56:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:56:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 12 states and 21 transitions. [2023-12-03 00:56:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 21 transitions. [2023-12-03 00:56:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-03 00:56:42,656 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:56:42,656 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:56:42,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:56:42,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:56:42,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-03 00:56:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:56:57,610 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:57:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:57:02,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 13558 conjuncts, 366 conjunts are in the unsatisfiable core [2023-12-03 00:57:02,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:57:31,917 WARN L293 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 639 DAG size of output: 633 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:57:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:57:33,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-03 00:57:47,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:57:57,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:58:19,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.89s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:58:29,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:58:39,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:58:49,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:58:59,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:59:13,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:59:26,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:59:36,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:59:46,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:59:56,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:00:14,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:00:24,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:00:34,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:00:44,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:00:54,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:01:04,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:01:05,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:01:22,616 WARN L293 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 641 DAG size of output: 639 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 01:02:10,771 WARN L293 SmtUtils]: Spent 9.81s on a formula simplification. DAG size of input: 643 DAG size of output: 639 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 01:02:50,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 11.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:03:35,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 11.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:03:45,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:03:56,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:04:02,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 01:04:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:04:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 19 states and 44 transitions. [2023-12-03 01:04:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 44 transitions. [2023-12-03 01:04:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-03 01:04:02,549 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:04:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 01:04:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 01:04:02,550 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 01:04:02,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-03 01:04:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:04:18,319 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 01:04:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:04:23,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 13558 conjuncts, 366 conjunts are in the unsatisfiable core [2023-12-03 01:04:23,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 01:04:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 01:04:28,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00607dd6-654d-4b9d-a88b-d75dc4e79264/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0