./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/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_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/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_20c18953-7416-40c8-bce8-d22b290ca3b5/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 5a831469c751e448f2212675b250a5c53fd9a8e85d39ceea076c06bc7d533711 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 00:49:24,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 00:49:24,765 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Default.epf [2023-12-03 00:49:24,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 00:49:24,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 00:49:24,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 00:49:24,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 00:49:24,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 00:49:24,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 00:49:24,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 00:49:24,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 00:49:24,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 00:49:24,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 00:49:24,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 00:49:24,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 00:49:24,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 00:49:24,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 00:49:24,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 00:49:24,798 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 00:49:24,799 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 00:49:24,800 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 00:49:24,800 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 00:49:24,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 00:49:24,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:49:24,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 00:49:24,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 00:49:24,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 00:49:24,803 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 00:49:24,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 00:49:24,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 00:49:24,804 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_20c18953-7416-40c8-bce8-d22b290ca3b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a831469c751e448f2212675b250a5c53fd9a8e85d39ceea076c06bc7d533711 [2023-12-03 00:49:25,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 00:49:25,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 00:49:25,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 00:49:25,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 00:49:25,045 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 00:49:25,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c [2023-12-03 00:49:27,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 00:49:28,110 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 00:49:28,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c [2023-12-03 00:49:28,128 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data/8ee12f05b/13a54bc76a4b41f0ac4118e20e57af6c/FLAG326d03638 [2023-12-03 00:49:28,142 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data/8ee12f05b/13a54bc76a4b41f0ac4118e20e57af6c [2023-12-03 00:49:28,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 00:49:28,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 00:49:28,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 00:49:28,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 00:49:28,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 00:49:28,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:49:28" (1/1) ... [2023-12-03 00:49:28,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147633c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:28, skipping insertion in model container [2023-12-03 00:49:28,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:49:28" (1/1) ... [2023-12-03 00:49:28,252 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 00:49:28,441 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_20c18953-7416-40c8-bce8-d22b290ca3b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c[1176,1189] [2023-12-03 00:49:28,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:49:28,972 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 00:49:28,984 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_20c18953-7416-40c8-bce8-d22b290ca3b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c[1176,1189] [2023-12-03 00:49:29,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:49:29,289 INFO L206 MainTranslator]: Completed translation [2023-12-03 00:49:29,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29 WrapperNode [2023-12-03 00:49:29,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 00:49:29,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 00:49:29,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 00:49:29,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 00:49:29,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:29,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:30,321 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 13371 [2023-12-03 00:49:30,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 00:49:30,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 00:49:30,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 00:49:30,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 00:49:30,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:30,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:30,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:30,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:30,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:31,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:31,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:31,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:31,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 00:49:31,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 00:49:31,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 00:49:31,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 00:49:31,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:49:29" (1/1) ... [2023-12-03 00:49:31,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:49:31,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 00:49:31,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 00:49:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 00:49:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 00:49:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 00:49:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 00:49:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 00:49:32,332 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 00:49:32,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 00:49:39,963 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 00:49:57,602 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 00:49:57,602 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 00:49:57,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:49:57 BoogieIcfgContainer [2023-12-03 00:49:57,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 00:49:57,605 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 00:49:57,605 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 00:49:57,612 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 00:49:57,612 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:49:57" (1/1) ... [2023-12-03 00:49:57,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 00:49:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:49:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-12-03 00:49:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-03 00:49:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 00:49:57,661 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:49:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:06,601 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 00:50:17,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-03 00:50:27,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-03 00:50:31,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:50:40,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 8.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:50:51,145 WARN L539 Checker$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 00:51:01,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:51:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:51:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2023-12-03 00:51:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-03 00:51:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 00:51:01,269 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:51:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:51:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-03 00:51:13,683 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 00:51:13,687 INFO L158 Benchmark]: Toolchain (without parser) took 105539.76ms. Allocated memory was 159.4MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 108.0MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 927.4MB. Max. memory is 16.1GB. [2023-12-03 00:51:13,687 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 159.4MB. Free memory was 133.4MB in the beginning and 133.3MB in the end (delta: 137.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 00:51:13,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1142.83ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 108.0MB in the beginning and 134.3MB in the end (delta: -26.3MB). Peak memory consumption was 106.6MB. Max. memory is 16.1GB. [2023-12-03 00:51:13,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 1030.86ms. Allocated memory was 226.5MB in the beginning and 385.9MB in the end (delta: 159.4MB). Free memory was 134.3MB in the beginning and 117.8MB in the end (delta: 16.5MB). Peak memory consumption was 194.8MB. Max. memory is 16.1GB. [2023-12-03 00:51:13,690 INFO L158 Benchmark]: Boogie Preprocessor took 1314.73ms. Allocated memory was 385.9MB in the beginning and 771.8MB in the end (delta: 385.9MB). Free memory was 117.8MB in the beginning and 459.6MB in the end (delta: -341.8MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. [2023-12-03 00:51:13,691 INFO L158 Benchmark]: RCFGBuilder took 25965.71ms. Allocated memory was 771.8MB in the beginning and 5.3GB in the end (delta: 4.5GB). Free memory was 459.6MB in the beginning and 4.2GB in the end (delta: -3.8GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-12-03 00:51:13,691 INFO L158 Benchmark]: CodeCheck took 76080.80ms. Allocated memory is still 5.3GB. Free memory was 4.2GB in the beginning and 4.3GB in the end (delta: -86.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 00:51:13,695 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 0.27ms. Allocated memory is still 159.4MB. Free memory was 133.4MB in the beginning and 133.3MB in the end (delta: 137.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1142.83ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 108.0MB in the beginning and 134.3MB in the end (delta: -26.3MB). Peak memory consumption was 106.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 1030.86ms. Allocated memory was 226.5MB in the beginning and 385.9MB in the end (delta: 159.4MB). Free memory was 134.3MB in the beginning and 117.8MB in the end (delta: 16.5MB). Peak memory consumption was 194.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 1314.73ms. Allocated memory was 385.9MB in the beginning and 771.8MB in the end (delta: 385.9MB). Free memory was 117.8MB in the beginning and 459.6MB in the end (delta: -341.8MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. * RCFGBuilder took 25965.71ms. Allocated memory was 771.8MB in the beginning and 5.3GB in the end (delta: 4.5GB). Free memory was 459.6MB in the beginning and 4.2GB in the end (delta: -3.8GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * CodeCheck took 76080.80ms. Allocated memory is still 5.3GB. Free memory was 4.2GB in the beginning and 4.3GB in the end (delta: -86.6MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-03 00:51:13,908 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forcibly destroying the process [2023-12-03 00:51:13,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/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_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/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_20c18953-7416-40c8-bce8-d22b290ca3b5/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 5a831469c751e448f2212675b250a5c53fd9a8e85d39ceea076c06bc7d533711 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 00:51:15,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 00:51:15,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Bitvector.epf [2023-12-03 00:51:16,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 00:51:16,009 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 00:51:16,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 00:51:16,010 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 00:51:16,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 00:51:16,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 00:51:16,012 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 00:51:16,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 00:51:16,013 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 00:51:16,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 00:51:16,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 00:51:16,014 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-03 00:51:16,015 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-03 00:51:16,016 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-03 00:51:16,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 00:51:16,017 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 00:51:16,017 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 00:51:16,018 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 00:51:16,019 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 00:51:16,019 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 00:51:16,019 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-03 00:51:16,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 00:51:16,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:51:16,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 00:51:16,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 00:51:16,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 00:51:16,022 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-03 00:51:16,023 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 00:51:16,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 00:51:16,024 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-03 00:51:16,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-03 00:51:16,024 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_20c18953-7416-40c8-bce8-d22b290ca3b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a831469c751e448f2212675b250a5c53fd9a8e85d39ceea076c06bc7d533711 [2023-12-03 00:51:16,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 00:51:16,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 00:51:16,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 00:51:16,324 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 00:51:16,325 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 00:51:16,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c [2023-12-03 00:51:19,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 00:51:19,472 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 00:51:19,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c [2023-12-03 00:51:19,490 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data/01861b9a1/284f6327bbd248c4804a1e4d37ef380e/FLAG912514ac8 [2023-12-03 00:51:19,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/data/01861b9a1/284f6327bbd248c4804a1e4d37ef380e [2023-12-03 00:51:19,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 00:51:19,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 00:51:19,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 00:51:19,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 00:51:19,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 00:51:19,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:51:19" (1/1) ... [2023-12-03 00:51:19,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6a137f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:19, skipping insertion in model container [2023-12-03 00:51:19,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:51:19" (1/1) ... [2023-12-03 00:51:19,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 00:51:19,757 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_20c18953-7416-40c8-bce8-d22b290ca3b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c[1176,1189] [2023-12-03 00:51:20,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:51:20,133 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 00:51:20,143 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_20c18953-7416-40c8-bce8-d22b290ca3b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c[1176,1189] [2023-12-03 00:51:20,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:51:20,371 INFO L206 MainTranslator]: Completed translation [2023-12-03 00:51:20,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20 WrapperNode [2023-12-03 00:51:20,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 00:51:20,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 00:51:20,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 00:51:20,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 00:51:20,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,582 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3687 [2023-12-03 00:51:20,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 00:51:20,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 00:51:20,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 00:51:20,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 00:51:20,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 00:51:20,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 00:51:20,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 00:51:20,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 00:51:20,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:51:20" (1/1) ... [2023-12-03 00:51:20,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:51:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 00:51:20,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 00:51:20,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 00:51:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 00:51:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-03 00:51:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 00:51:20,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 00:51:21,460 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 00:51:21,462 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 00:51:28,377 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 00:51:28,597 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 00:51:28,597 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 00:51:28,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:51:28 BoogieIcfgContainer [2023-12-03 00:51:28,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 00:51:28,600 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 00:51:28,600 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 00:51:28,610 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 00:51:28,610 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:51:28" (1/1) ... [2023-12-03 00:51:28,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 00:51:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:51:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-12-03 00:51:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-03 00:51:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 00:51:28,674 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:51:28,674 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:51:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:51:28,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:51:28,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-03 00:51:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:51:29,853 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:51:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:51:30,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-03 00:51:30,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:51:30,326 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 00:51:30,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-03 00:51:32,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:51:32,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:51:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 8 states and 10 transitions. [2023-12-03 00:51:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-12-03 00:51:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 00:51:32,596 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:51:32,596 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:51:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:51:32,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:51:32,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-12-03 00:51:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:51:35,041 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:51:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:51:36,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 3236 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-03 00:51:36,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:51:37,029 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 00:51:37,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2023-12-03 00:51:39,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:51:42,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:51:44,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:51:47,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:51:48,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:51:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:51:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 12 states and 21 transitions. [2023-12-03 00:51:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 21 transitions. [2023-12-03 00:51:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-03 00:51:49,418 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:51:49,418 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:51:49,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:51:49,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:51:49,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-03 00:51:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:51:53,660 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:51:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:51:55,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 6015 conjuncts, 339 conjunts are in the unsatisfiable core [2023-12-03 00:51:55,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:52:09,587 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 00:52:09,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-03 00:52:13,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-03 00:52:18,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:52:21,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:52:24,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:52:30,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:53:12,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:53:29,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:53:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:53:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 19 states and 42 transitions. [2023-12-03 00:53:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 42 transitions. [2023-12-03 00:53:33,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-03 00:53:33,420 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:53:33,420 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:53:33,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:53:33,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:53:33,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-03 00:53:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:53:37,818 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:53:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:53:39,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 6015 conjuncts, 339 conjunts are in the unsatisfiable core [2023-12-03 00:53:39,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:53:43,010 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 00:53:43,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-03 00:53:49,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-03 00:53:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:53:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 20 states and 44 transitions. [2023-12-03 00:53:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 44 transitions. [2023-12-03 00:53:51,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-03 00:53:51,045 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:53:51,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 00:53:51,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 00:53:51,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 00:53:51,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c18953-7416-40c8-bce8-d22b290ca3b5/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-03 00:53:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:53:59,986 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 00:54:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:54:02,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 8794 conjuncts, 1012 conjunts are in the unsatisfiable core [2023-12-03 00:54:02,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:55:12,977 WARN L293 SmtUtils]: Spent 46.70s on a formula simplification. DAG size of input: 659 DAG size of output: 652 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)