./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.frogs.1.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.frogs.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b --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 2ab7435ef8679fe3eb61c8a79803fbf509f1faa1b74e4821e5a6c5797a94cf30 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 00:22:31,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 00:22:31,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-64bit-Kojak_Default.epf [2024-12-06 00:22:31,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 00:22:31,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 00:22:31,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 00:22:31,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 00:22:31,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 00:22:31,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 00:22:31,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 00:22:31,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 00:22:31,842 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 00:22:31,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 00:22:31,843 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 00:22:31,843 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 00:22:31,843 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 00:22:31,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 00:22:31,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 00:22:31,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 00:22:31,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 00:22:31,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 00:22:31,844 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 00:22:31,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 00:22:31,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b 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 -> 2ab7435ef8679fe3eb61c8a79803fbf509f1faa1b74e4821e5a6c5797a94cf30 [2024-12-06 00:22:32,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 00:22:32,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 00:22:32,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 00:22:32,120 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 00:22:32,120 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 00:22:32,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.frogs.1.prop1-back-serstep.c [2024-12-06 00:22:35,090 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/data/3e41b8645/94fedca02d594e4789e3c856bcabbece/FLAG325729d0a [2024-12-06 00:22:35,454 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 00:22:35,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.frogs.1.prop1-back-serstep.c [2024-12-06 00:22:35,481 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/data/3e41b8645/94fedca02d594e4789e3c856bcabbece/FLAG325729d0a [2024-12-06 00:22:35,497 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/data/3e41b8645/94fedca02d594e4789e3c856bcabbece [2024-12-06 00:22:35,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 00:22:35,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 00:22:35,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 00:22:35,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 00:22:35,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 00:22:35,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:22:35" (1/1) ... [2024-12-06 00:22:35,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bce9767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:35, skipping insertion in model container [2024-12-06 00:22:35,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:22:35" (1/1) ... [2024-12-06 00:22:35,585 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 00:22:35,786 WARN L250 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_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.frogs.1.prop1-back-serstep.c[1173,1186] [2024-12-06 00:22:36,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 00:22:36,368 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 00:22:36,379 WARN L250 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_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.frogs.1.prop1-back-serstep.c[1173,1186] [2024-12-06 00:22:36,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 00:22:36,771 INFO L204 MainTranslator]: Completed translation [2024-12-06 00:22:36,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36 WrapperNode [2024-12-06 00:22:36,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 00:22:36,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 00:22:36,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 00:22:36,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 00:22:36,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:36,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:37,718 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 10545 [2024-12-06 00:22:37,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 00:22:37,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 00:22:37,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 00:22:37,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 00:22:37,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:37,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,342 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 00:22:38,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 00:22:38,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 00:22:38,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 00:22:38,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:22:36" (1/1) ... [2024-12-06 00:22:38,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 00:22:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 00:22:38,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 00:22:38,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb3b190-fa1c-4712-a0cc-7c48871fcf81/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 00:22:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 00:22:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 00:22:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 00:22:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 00:22:39,382 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 00:22:39,384 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 00:22:48,416 INFO L? ?]: Removed 7027 outVars from TransFormulas that were not future-live. [2024-12-06 00:22:48,416 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 00:23:00,222 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 00:23:00,223 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-06 00:23:00,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:23:00 BoogieIcfgContainer [2024-12-06 00:23:00,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 00:23:00,224 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 00:23:00,224 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 00:23:00,232 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 00:23:00,232 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:23:00" (1/1) ... [2024-12-06 00:23:00,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 00:23:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:23:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2024-12-06 00:23:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2024-12-06 00:23:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 00:23:00,276 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:23:00,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 00:23:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 00:23:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 00:23:12,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-06 00:23:22,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-06 00:23:27,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-06 00:23:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:23:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2024-12-06 00:23:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-12-06 00:23:27,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 00:23:27,911 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:23:27,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms