./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/lunarlander_57_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/lunarlander_57_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd9c63dd84affe19790c4c1527b6c86bb12f3d9ece5df7cd365bdd2ac35217c5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:10,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:10,182 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:10,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:10,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:10,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:10,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:10,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:10,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:10,215 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:10,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:10,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:10,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:10,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:10,217 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:10,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:10,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:10,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:10,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:10,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:10,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:10,221 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:10,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:10,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:10,222 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:10,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:10,223 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:10,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:10,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:10,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:10,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:10,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:10,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:10,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:10,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:10,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:10,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:10,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:10,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:10,227 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:10,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:10,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:10,228 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd9c63dd84affe19790c4c1527b6c86bb12f3d9ece5df7cd365bdd2ac35217c5 [2023-11-26 10:44:10,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:10,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:10,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:10,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:10,548 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:10,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/neural-networks/lunarlander_57_unsafe.c-amalgamation.i [2023-11-26 10:44:13,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:14,262 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:14,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/sv-benchmarks/c/neural-networks/lunarlander_57_unsafe.c-amalgamation.i [2023-11-26 10:44:14,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/data/f58045d74/4065255e5875403c97c80e0be26f6718/FLAGd3afc5e8a [2023-11-26 10:44:14,319 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/data/f58045d74/4065255e5875403c97c80e0be26f6718 [2023-11-26 10:44:14,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:14,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:14,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:14,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:14,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:14,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:14" (1/1) ... [2023-11-26 10:44:14,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e64c346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:14, skipping insertion in model container [2023-11-26 10:44:14,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:14" (1/1) ... [2023-11-26 10:44:14,465 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:15,531 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_8b0f2000-5edd-4aa7-a98d-e865d20636b0/sv-benchmarks/c/neural-networks/lunarlander_57_unsafe.c-amalgamation.i[64324,64337] [2023-11-26 10:44:15,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:16,101 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:16,189 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_8b0f2000-5edd-4aa7-a98d-e865d20636b0/sv-benchmarks/c/neural-networks/lunarlander_57_unsafe.c-amalgamation.i[64324,64337] [2023-11-26 10:44:16,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:16,817 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:16,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16 WrapperNode [2023-11-26 10:44:16,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:16,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:16,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:16,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:16,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:16,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,317 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5469 [2023-11-26 10:44:17,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:17,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:17,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:17,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:17,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,507 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 25, 513, 65, 4097, 65, 257, 3, 5, 14, 70]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 0, 512, 64, 4096, 64, 256, 0, 4, 8, 64]. The 14 writes are split as follows [0, 0, 8, 0, 0, 0, 0, 0, 1, 0, 3, 2]. [2023-11-26 10:44:17,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:17,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:17,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:17,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:17,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (1/1) ... [2023-11-26 10:44:17,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:17,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:17,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:17,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 10:44:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 10:44:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-26 10:44:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-26 10:44:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-26 10:44:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-26 10:44:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-26 10:44:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-26 10:44:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-26 10:44:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-26 10:44:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-26 10:44:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-26 10:44:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:44:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-26 10:44:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-26 10:44:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-26 10:44:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-26 10:44:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-26 10:44:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-26 10:44:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-26 10:44:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-26 10:44:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-26 10:44:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-26 10:44:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-26 10:44:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-26 10:44:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-26 10:44:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-26 10:44:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-26 10:44:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-26 10:44:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-26 10:44:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-26 10:44:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-26 10:44:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-26 10:44:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-26 10:44:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-26 10:44:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-26 10:44:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-26 10:44:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:44:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:44:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:44:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:44:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:44:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:44:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 10:44:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 10:44:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 10:44:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 10:44:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 10:44:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 10:44:18,196 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:18,197 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:27,563 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:28,099 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:28,099 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-26 10:44:28,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:28 BoogieIcfgContainer [2023-11-26 10:44:28,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:28,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:28,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:28,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:28,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:14" (1/3) ... [2023-11-26 10:44:28,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b780edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:28, skipping insertion in model container [2023-11-26 10:44:28,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:16" (2/3) ... [2023-11-26 10:44:28,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b780edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:28, skipping insertion in model container [2023-11-26 10:44:28,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:28" (3/3) ... [2023-11-26 10:44:28,111 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_57_unsafe.c-amalgamation.i [2023-11-26 10:44:28,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:28,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:28,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:28,208 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f0a92e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:28,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:44:28,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:28,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:28,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:28,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:28,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2023-11-26 10:44:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:28,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227513263] [2023-11-26 10:44:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:29,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227513263] [2023-11-26 10:44:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227513263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:29,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:29,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980672070] [2023-11-26 10:44:29,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:29,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:29,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:29,901 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:30,432 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2023-11-26 10:44:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 10:44:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:30,445 INFO L225 Difference]: With dead ends: 113 [2023-11-26 10:44:30,445 INFO L226 Difference]: Without dead ends: 56 [2023-11-26 10:44:30,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:30,452 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:30,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:44:30,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-26 10:44:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-26 10:44:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2023-11-26 10:44:30,495 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2023-11-26 10:44:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:30,496 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-26 10:44:30,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2023-11-26 10:44:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:44:30,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:30,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:44:30,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:30,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2023-11-26 10:44:30,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:30,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889025388] [2023-11-26 10:44:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:30,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:31,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889025388] [2023-11-26 10:44:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889025388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:31,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:31,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:31,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562720734] [2023-11-26 10:44:31,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:31,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:31,735 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:32,401 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2023-11-26 10:44:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:32,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 10:44:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:32,404 INFO L225 Difference]: With dead ends: 104 [2023-11-26 10:44:32,404 INFO L226 Difference]: Without dead ends: 56 [2023-11-26 10:44:32,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:32,406 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:32,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:44:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-26 10:44:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-26 10:44:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2023-11-26 10:44:32,415 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2023-11-26 10:44:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:32,415 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-26 10:44:32,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2023-11-26 10:44:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:44:32,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:32,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:32,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:44:32,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:32,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2023-11-26 10:44:32,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187463966] [2023-11-26 10:44:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:32,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:34,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:34,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187463966] [2023-11-26 10:44:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187463966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:34,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:34,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:34,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406182406] [2023-11-26 10:44:34,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:34,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:34,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:34,079 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:34,783 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2023-11-26 10:44:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 10:44:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:34,785 INFO L225 Difference]: With dead ends: 87 [2023-11-26 10:44:34,785 INFO L226 Difference]: Without dead ends: 57 [2023-11-26 10:44:34,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:34,787 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:34,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:44:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-26 10:44:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-26 10:44:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-11-26 10:44:34,795 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2023-11-26 10:44:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:34,796 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-11-26 10:44:34,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-11-26 10:44:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 10:44:34,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:34,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:34,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:44:34,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:34,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:34,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2023-11-26 10:44:34,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339740338] [2023-11-26 10:44:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:34,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:36,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:36,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339740338] [2023-11-26 10:44:36,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339740338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:36,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852806940] [2023-11-26 10:44:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:36,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:36,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:36,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:36,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:38,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 6102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:44:38,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:38,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:44:38,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852806940] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:38,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:38,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-26 10:44:38,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947070200] [2023-11-26 10:44:38,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:38,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:38,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:38,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:38,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:38,783 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:39,470 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2023-11-26 10:44:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:39,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-26 10:44:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:39,472 INFO L225 Difference]: With dead ends: 78 [2023-11-26 10:44:39,472 INFO L226 Difference]: Without dead ends: 58 [2023-11-26 10:44:39,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:39,474 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:39,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:44:39,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-26 10:44:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-26 10:44:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2023-11-26 10:44:39,487 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2023-11-26 10:44:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:39,488 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2023-11-26 10:44:39,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2023-11-26 10:44:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 10:44:39,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:39,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:39,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:39,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:39,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:39,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2023-11-26 10:44:39,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:39,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415251950] [2023-11-26 10:44:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:39,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:44:41,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:41,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415251950] [2023-11-26 10:44:41,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415251950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:41,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69396707] [2023-11-26 10:44:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:41,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:41,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:41,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:44:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:43,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 6120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:44:43,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:44:43,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69396707] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:43,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:43,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-26 10:44:43,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300248198] [2023-11-26 10:44:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:43,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:43,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:43,571 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:44,169 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2023-11-26 10:44:44,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:44,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-26 10:44:44,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:44,172 INFO L225 Difference]: With dead ends: 69 [2023-11-26 10:44:44,172 INFO L226 Difference]: Without dead ends: 59 [2023-11-26 10:44:44,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:44,173 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:44,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:44:44,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-26 10:44:44,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-26 10:44:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-11-26 10:44:44,180 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2023-11-26 10:44:44,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:44,181 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-11-26 10:44:44,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-11-26 10:44:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-26 10:44:44,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:44,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:44,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 10:44:44,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:44,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:44,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2023-11-26 10:44:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75903458] [2023-11-26 10:44:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:45,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:45,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75903458] [2023-11-26 10:44:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75903458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098054921] [2023-11-26 10:44:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:45,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:44:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:47,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 6138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:44:47,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:47,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:44:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098054921] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-26 10:44:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098397204] [2023-11-26 10:44:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:47,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:47,819 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:48,499 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2023-11-26 10:44:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:48,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-26 10:44:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:48,501 INFO L225 Difference]: With dead ends: 86 [2023-11-26 10:44:48,501 INFO L226 Difference]: Without dead ends: 60 [2023-11-26 10:44:48,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:48,503 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:48,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:44:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-26 10:44:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-26 10:44:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:48,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2023-11-26 10:44:48,509 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2023-11-26 10:44:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:48,510 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2023-11-26 10:44:48,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:48,510 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2023-11-26 10:44:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:44:48,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:48,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:48,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:48,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:44:48,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2023-11-26 10:44:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237919900] [2023-11-26 10:44:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:48,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:44:50,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:50,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237919900] [2023-11-26 10:44:50,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237919900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:50,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246989370] [2023-11-26 10:44:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:50,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:50,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:50,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:50,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:44:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:51,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 6144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:44:51,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:44:51,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:44:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246989370] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:51,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:51,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-26 10:44:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757018894] [2023-11-26 10:44:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:51,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:51,943 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:52,561 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2023-11-26 10:44:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-26 10:44:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:52,563 INFO L225 Difference]: With dead ends: 76 [2023-11-26 10:44:52,563 INFO L226 Difference]: Without dead ends: 61 [2023-11-26 10:44:52,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:52,564 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:52,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:44:52,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-26 10:44:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-26 10:44:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2023-11-26 10:44:52,571 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2023-11-26 10:44:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:52,572 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2023-11-26 10:44:52,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2023-11-26 10:44:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:44:52,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:52,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:52,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:44:52,788 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:52,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:52,789 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2023-11-26 10:44:52,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:52,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380032201] [2023-11-26 10:44:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:52,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:44:54,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380032201] [2023-11-26 10:44:54,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380032201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536410383] [2023-11-26 10:44:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:54,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:54,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:44:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:56,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 6150 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:44:56,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:44:56,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:44:56,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536410383] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:56,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-26 10:44:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252907591] [2023-11-26 10:44:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:56,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:56,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:56,137 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:56,796 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-26 10:44:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:56,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-26 10:44:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:56,798 INFO L225 Difference]: With dead ends: 66 [2023-11-26 10:44:56,799 INFO L226 Difference]: Without dead ends: 62 [2023-11-26 10:44:56,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:56,800 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:56,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:44:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-26 10:44:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-26 10:44:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2023-11-26 10:44:56,807 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2023-11-26 10:44:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:56,807 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2023-11-26 10:44:56,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-11-26 10:44:56,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 10:44:56,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:56,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:56,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b0f2000-5edd-4aa7-a98d-e865d20636b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:57,026 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2023-11-26 10:44:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547244474] [2023-11-26 10:44:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat