./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.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_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/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_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/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_0b73245f-10f6-41e0-8017-97f417cf3326/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 4c8029619d7b96e7beb8b84662f3e5af172aecec9fb32db15cdd1830b73250b2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:25:35,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:25:35,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Default.epf [2023-12-02 23:25:35,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 23:25:35,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 23:25:35,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:25:35,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 23:25:35,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 23:25:35,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:25:35,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:25:35,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:25:35,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:25:35,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 23:25:35,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:25:35,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:25:35,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:25:35,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:25:35,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:25:35,714 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:25:35,714 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:25:35,715 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:25:35,716 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:25:35,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:25:35,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:25:35,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:25:35,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:25:35,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 23:25:35,718 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 23:25:35,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 23:25:35,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 23:25:35,720 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_0b73245f-10f6-41e0-8017-97f417cf3326/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8029619d7b96e7beb8b84662f3e5af172aecec9fb32db15cdd1830b73250b2 [2023-12-02 23:25:35,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:25:35,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:25:35,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:25:35,969 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:25:35,969 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:25:35,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c [2023-12-02 23:25:38,668 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:25:39,187 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:25:39,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c [2023-12-02 23:25:39,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data/80e82e68b/0a3a4879e6d94ae1a5b0c308b0b26cdd/FLAGdb50edec2 [2023-12-02 23:25:39,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data/80e82e68b/0a3a4879e6d94ae1a5b0c308b0b26cdd [2023-12-02 23:25:39,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:25:39,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:25:39,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:25:39,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:25:39,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:25:39,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:25:39" (1/1) ... [2023-12-02 23:25:39,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca62ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:39, skipping insertion in model container [2023-12-02 23:25:39,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:25:39" (1/1) ... [2023-12-02 23:25:39,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:25:39,924 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_0b73245f-10f6-41e0-8017-97f417cf3326/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c[1180,1193] [2023-12-02 23:25:41,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:25:41,387 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:25:41,399 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_0b73245f-10f6-41e0-8017-97f417cf3326/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c[1180,1193] [2023-12-02 23:25:42,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:25:42,513 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:25:42,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42 WrapperNode [2023-12-02 23:25:42,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:25:42,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:25:42,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:25:42,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:25:42,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:42,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:46,436 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56796 [2023-12-02 23:25:46,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:25:46,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:25:46,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:25:46,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:25:46,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:46,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:47,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:47,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:48,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:48,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:48,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:48,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:49,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:25:49,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:25:49,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:25:49,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:25:49,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:25:42" (1/1) ... [2023-12-02 23:25:49,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:25:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:25:49,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:25:49,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:25:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:25:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 23:25:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:25:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:25:51,794 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:25:51,796 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:26:15,927 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:28:38,102 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:28:38,102 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 23:28:38,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:28:38 BoogieIcfgContainer [2023-12-02 23:28:38,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:28:38,105 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:28:38,105 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:28:38,113 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:28:38,113 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:28:38" (1/1) ... [2023-12-02 23:28:38,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:28:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:28:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-12-02 23:28:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-02 23:28:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 23:28:38,161 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:28:38,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:29:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:29:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:29:46,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 13.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 23:29:57,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 23:30:08,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:30:18,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:30:28,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:30:38,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 9.53s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:30:48,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:30:58,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:30:58,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:30:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2023-12-02 23:30:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-02 23:30:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 23:30:58,539 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:30:58,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:31:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-02 23:31:25,312 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) [2023-12-02 23:31:25,316 INFO L158 Benchmark]: Toolchain (without parser) took 346050.99ms. Allocated memory was 151.0MB in the beginning and 14.8GB in the end (delta: 14.7GB). Free memory was 90.0MB in the beginning and 10.8GB in the end (delta: -10.8GB). Peak memory consumption was 4.0GB. Max. memory is 16.1GB. [2023-12-02 23:31:25,316 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:31:25,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3248.61ms. Allocated memory was 151.0MB in the beginning and 543.2MB in the end (delta: 392.2MB). Free memory was 90.0MB in the beginning and 221.7MB in the end (delta: -131.7MB). Peak memory consumption was 263.4MB. Max. memory is 16.1GB. [2023-12-02 23:31:25,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 3921.04ms. Allocated memory was 543.2MB in the beginning and 3.8GB in the end (delta: 3.3GB). Free memory was 221.7MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 685.9MB. Max. memory is 16.1GB. [2023-12-02 23:31:25,319 INFO L158 Benchmark]: Boogie Preprocessor took 3278.95ms. Allocated memory was 3.8GB in the beginning and 8.7GB in the end (delta: 4.9GB). Free memory was 2.9GB in the beginning and 7.5GB in the end (delta: -4.6GB). Peak memory consumption was 438.3MB. Max. memory is 16.1GB. [2023-12-02 23:31:25,320 INFO L158 Benchmark]: RCFGBuilder took 168386.89ms. Allocated memory was 8.7GB in the beginning and 14.6GB in the end (delta: 5.8GB). Free memory was 7.5GB in the beginning and 11.0GB in the end (delta: -3.4GB). Peak memory consumption was 5.0GB. Max. memory is 16.1GB. [2023-12-02 23:31:25,320 INFO L158 Benchmark]: CodeCheck took 167210.23ms. Allocated memory was 14.6GB in the beginning and 14.8GB in the end (delta: 234.9MB). Free memory was 11.0GB in the beginning and 10.8GB in the end (delta: 109.5MB). Peak memory consumption was 475.4MB. Max. memory is 16.1GB. [2023-12-02 23:31:25,324 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 0.16ms. Allocated memory is still 111.1MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3248.61ms. Allocated memory was 151.0MB in the beginning and 543.2MB in the end (delta: 392.2MB). Free memory was 90.0MB in the beginning and 221.7MB in the end (delta: -131.7MB). Peak memory consumption was 263.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 3921.04ms. Allocated memory was 543.2MB in the beginning and 3.8GB in the end (delta: 3.3GB). Free memory was 221.7MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 685.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 3278.95ms. Allocated memory was 3.8GB in the beginning and 8.7GB in the end (delta: 4.9GB). Free memory was 2.9GB in the beginning and 7.5GB in the end (delta: -4.6GB). Peak memory consumption was 438.3MB. Max. memory is 16.1GB. * RCFGBuilder took 168386.89ms. Allocated memory was 8.7GB in the beginning and 14.6GB in the end (delta: 5.8GB). Free memory was 7.5GB in the beginning and 11.0GB in the end (delta: -3.4GB). Peak memory consumption was 5.0GB. Max. memory is 16.1GB. * CodeCheck took 167210.23ms. Allocated memory was 14.6GB in the beginning and 14.8GB in the end (delta: 234.9MB). Free memory was 11.0GB in the beginning and 10.8GB in the end (delta: 109.5MB). Peak memory consumption was 475.4MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-02 23:31:25,539 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forcibly destroying the process [2023-12-02 23:31:25,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/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_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/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_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/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_0b73245f-10f6-41e0-8017-97f417cf3326/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 4c8029619d7b96e7beb8b84662f3e5af172aecec9fb32db15cdd1830b73250b2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:31:27,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:31:28,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-64bit-Kojak_Bitvector.epf [2023-12-02 23:31:28,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:31:28,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 23:31:28,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 23:31:28,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:31:28,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:31:28,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:31:28,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:31:28,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:31:28,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:31:28,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:31:28,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:31:28,067 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 23:31:28,067 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 23:31:28,068 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 23:31:28,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:31:28,069 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:31:28,070 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:31:28,070 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:31:28,071 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:31:28,071 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 23:31:28,072 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-02 23:31:28,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:31:28,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:31:28,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:31:28,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:31:28,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 23:31:28,074 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 23:31:28,075 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 23:31:28,075 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 23:31:28,075 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-02 23:31:28,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 23:31:28,076 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_0b73245f-10f6-41e0-8017-97f417cf3326/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8029619d7b96e7beb8b84662f3e5af172aecec9fb32db15cdd1830b73250b2 [2023-12-02 23:31:28,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:31:28,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:31:28,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:31:28,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:31:28,389 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:31:28,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c [2023-12-02 23:31:31,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:31:31,643 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:31:31,644 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c [2023-12-02 23:31:31,723 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data/e0ee9d543/a1a1cbf6dc6144f994825fe8cd076515/FLAGf25b81381 [2023-12-02 23:31:31,737 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/data/e0ee9d543/a1a1cbf6dc6144f994825fe8cd076515 [2023-12-02 23:31:31,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:31:31,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:31:31,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:31:31,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:31:31,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:31:31,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:31:31" (1/1) ... [2023-12-02 23:31:31,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76680087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:31, skipping insertion in model container [2023-12-02 23:31:31,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:31:31" (1/1) ... [2023-12-02 23:31:31,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:31:32,270 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_0b73245f-10f6-41e0-8017-97f417cf3326/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c[1180,1193] [2023-12-02 23:31:33,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:31:33,354 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:31:33,368 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_0b73245f-10f6-41e0-8017-97f417cf3326/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop2-back-serstep.c[1180,1193] [2023-12-02 23:31:34,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:31:34,168 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:31:34,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34 WrapperNode [2023-12-02 23:31:34,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:31:34,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:31:34,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:31:34,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:31:34,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:34,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:34,772 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 16497 [2023-12-02 23:31:34,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:31:34,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:31:34,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:31:34,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:31:34,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:34,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:34,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:34,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:35,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:35,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:35,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:35,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:35,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:31:35,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:31:35,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:31:35,430 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:31:35,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:34" (1/1) ... [2023-12-02 23:31:35,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:31:35,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:31:35,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:31:35,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:31:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:31:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 23:31:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:31:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:31:37,259 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:31:37,261 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:33:12,778 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:33:13,332 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:33:13,333 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 23:33:13,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:33:13 BoogieIcfgContainer [2023-12-02 23:33:13,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:33:13,335 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:33:13,335 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:33:13,344 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:33:13,345 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:33:13" (1/1) ... [2023-12-02 23:33:13,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:33:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:33:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-12-02 23:33:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-02 23:33:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 23:33:13,403 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:33:13,404 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:33:13,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:33:13,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:33:13,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-02 23:33:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:33:17,077 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:33:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:33:18,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 23:33:18,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 23:33:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:33:18,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-02 23:33:29,294 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 [] [2023-12-02 23:33:39,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:33:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:33:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 8 states and 10 transitions. [2023-12-02 23:33:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-12-02 23:33:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 23:33:40,610 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:33:40,610 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:33:40,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:33:40,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:33:40,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-12-02 23:33:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:33:51,012 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:33:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:33:55,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 14549 conjuncts, 209 conjunts are in the unsatisfiable core [2023-12-02 23:33:55,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 23:33:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:33:57,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-12-02 23:34:09,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:34:20,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:34:33,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:34:43,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:34:53,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:34:58,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.54s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:35:07,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 9.07s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:35:20,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:35:31,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:35:41,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 23:35:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:35:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 12 states and 21 transitions. [2023-12-02 23:35:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 21 transitions. [2023-12-02 23:35:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 23:35:42,050 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:35:42,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:35:42,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:35:42,051 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:35:42,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b73245f-10f6-41e0-8017-97f417cf3326/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 23:36:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:36:02,838 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:36:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:36:14,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 27564 conjuncts, 1088 conjunts are in the unsatisfiable core [2023-12-02 23:36:14,747 INFO L285 TraceCheckSpWp]: Computing forward predicates...