./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/lunarlander_59_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/lunarlander_59_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya --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 83306b1fae7da0ff3ba82ab8767a6ecd95e02c138f0c0469295c404c7d2b426e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:22:06,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:22:06,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:22:06,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:22:06,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:22:06,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:22:06,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:22:06,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:22:06,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:22:06,634 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:22:06,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:22:06,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:22:06,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:22:06,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:22:06,637 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:22:06,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:22:06,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:22:06,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:22:06,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:22:06,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:22:06,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:22:06,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:22:06,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:22:06,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:22:06,643 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:22:06,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:22:06,644 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:22:06,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:22:06,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:22:06,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:22:06,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:22:06,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:22:06,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:22:06,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:22:06,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:22:06,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:22:06,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:22:06,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:22:06,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:22:06,648 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:22:06,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:22:06,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:22:06,648 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_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83306b1fae7da0ff3ba82ab8767a6ecd95e02c138f0c0469295c404c7d2b426e [2023-11-29 01:22:06,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:22:06,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:22:06,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:22:06,889 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:22:06,889 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:22:06,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/neural-networks/lunarlander_59_unsafe.c-amalgamation.i [2023-11-29 01:22:09,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:22:10,013 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:22:10,014 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/sv-benchmarks/c/neural-networks/lunarlander_59_unsafe.c-amalgamation.i [2023-11-29 01:22:10,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/data/89d4ce298/49ab620c006b4fe19ac567dd011e983e/FLAG5bec3cd71 [2023-11-29 01:22:10,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/data/89d4ce298/49ab620c006b4fe19ac567dd011e983e [2023-11-29 01:22:10,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:22:10,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:22:10,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:22:10,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:22:10,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:22:10,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:10" (1/1) ... [2023-11-29 01:22:10,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500dc037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:10, skipping insertion in model container [2023-11-29 01:22:10,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:10" (1/1) ... [2023-11-29 01:22:10,157 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:22:10,851 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_a4d0dafb-0650-4846-aac2-6dc83c8383d8/sv-benchmarks/c/neural-networks/lunarlander_59_unsafe.c-amalgamation.i[64318,64331] [2023-11-29 01:22:11,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:22:11,194 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:22:11,234 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_a4d0dafb-0650-4846-aac2-6dc83c8383d8/sv-benchmarks/c/neural-networks/lunarlander_59_unsafe.c-amalgamation.i[64318,64331] [2023-11-29 01:22:11,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:22:11,680 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:22:11,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11 WrapperNode [2023-11-29 01:22:11,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:22:11,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:22:11,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:22:11,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:22:11,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:11,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,005 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5469 [2023-11-29 01:22:12,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:22:12,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:22:12,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:22:12,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:22:12,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,106 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 4097, 65, 25, 257, 5, 14, 70, 3]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 4096, 64, 0, 256, 4, 8, 64, 0]. The 14 writes are split as follows [0, 0, 0, 0, 0, 0, 8, 0, 0, 3, 2, 1]. [2023-11-29 01:22:12,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:22:12,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:22:12,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:22:12,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:22:12,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (1/1) ... [2023-11-29 01:22:12,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:22:12,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:12,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:22:12,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:22:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-29 01:22:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-29 01:22:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-29 01:22:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-29 01:22:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-29 01:22:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-29 01:22:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-29 01:22:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-29 01:22:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:22:12,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:22:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:22:12,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 01:22:12,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 01:22:12,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 01:22:12,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 01:22:12,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 01:22:12,636 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:22:12,638 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:22:19,813 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:22:20,071 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:22:20,071 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-29 01:22:20,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:22:20 BoogieIcfgContainer [2023-11-29 01:22:20,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:22:20,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:22:20,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:22:20,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:22:20,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:22:10" (1/3) ... [2023-11-29 01:22:20,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c135ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:22:20, skipping insertion in model container [2023-11-29 01:22:20,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:11" (2/3) ... [2023-11-29 01:22:20,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c135ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:22:20, skipping insertion in model container [2023-11-29 01:22:20,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:22:20" (3/3) ... [2023-11-29 01:22:20,078 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_59_unsafe.c-amalgamation.i [2023-11-29 01:22:20,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:22:20,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:22:20,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:22:20,138 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;@70e22520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:22:20,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:22:20,142 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) [2023-11-29 01:22:20,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:22:20,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:20,148 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] [2023-11-29 01:22:20,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:20,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2023-11-29 01:22:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:20,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217944642] [2023-11-29 01:22:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:20,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:21,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217944642] [2023-11-29 01:22:21,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217944642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:21,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:21,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:22:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373350328] [2023-11-29 01:22:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:21,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:22:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:21,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:22:21,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:22:21,228 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) [2023-11-29 01:22:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:21,696 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2023-11-29 01:22:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:22:21,699 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 [2023-11-29 01:22:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:21,707 INFO L225 Difference]: With dead ends: 113 [2023-11-29 01:22:21,707 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 01:22:21,710 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 [2023-11-29 01:22:21,714 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:21,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:22:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 01:22:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 01:22:21,747 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) [2023-11-29 01:22:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2023-11-29 01:22:21,750 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2023-11-29 01:22:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:21,750 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-29 01:22:21,750 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) [2023-11-29 01:22:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2023-11-29 01:22:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:22:21,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:21,752 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] [2023-11-29 01:22:21,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:22:21,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:21,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2023-11-29 01:22:21,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:21,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503825064] [2023-11-29 01:22:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:21,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:22,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:22,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503825064] [2023-11-29 01:22:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503825064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:22:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457500915] [2023-11-29 01:22:22,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:22:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:22:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:22:22,630 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) [2023-11-29 01:22:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:23,153 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2023-11-29 01:22:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:22:23,154 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 [2023-11-29 01:22:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:23,155 INFO L225 Difference]: With dead ends: 104 [2023-11-29 01:22:23,155 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 01:22:23,155 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 [2023-11-29 01:22:23,157 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:23,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:22:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 01:22:23,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 01:22:23,163 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) [2023-11-29 01:22:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2023-11-29 01:22:23,165 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2023-11-29 01:22:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:23,165 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-29 01:22:23,166 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) [2023-11-29 01:22:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2023-11-29 01:22:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:22:23,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:23,167 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] [2023-11-29 01:22:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:22:23,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:23,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2023-11-29 01:22:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687769439] [2023-11-29 01:22:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:24,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687769439] [2023-11-29 01:22:24,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687769439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:24,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:24,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:22:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056483787] [2023-11-29 01:22:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:24,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:22:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:22:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:22:24,620 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) [2023-11-29 01:22:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:25,124 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2023-11-29 01:22:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:22:25,125 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 [2023-11-29 01:22:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:25,126 INFO L225 Difference]: With dead ends: 87 [2023-11-29 01:22:25,126 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 01:22:25,127 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 [2023-11-29 01:22:25,128 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:25,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:22:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 01:22:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 01:22:25,135 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) [2023-11-29 01:22:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-11-29 01:22:25,136 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2023-11-29 01:22:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:25,136 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-11-29 01:22:25,137 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) [2023-11-29 01:22:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-11-29 01:22:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:22:25,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:25,138 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] [2023-11-29 01:22:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:22:25,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:25,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2023-11-29 01:22:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007694849] [2023-11-29 01:22:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:26,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:26,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007694849] [2023-11-29 01:22:26,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007694849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:26,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871933256] [2023-11-29 01:22:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:26,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:26,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:26,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:26,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:22:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:27,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 6102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:22:27,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:27,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:22:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871933256] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:27,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 01:22:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449771753] [2023-11-29 01:22:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:27,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:22:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:22:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:22:27,934 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) [2023-11-29 01:22:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:28,268 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2023-11-29 01:22:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:22:28,268 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 [2023-11-29 01:22:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:28,269 INFO L225 Difference]: With dead ends: 78 [2023-11-29 01:22:28,270 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 01:22:28,270 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 [2023-11-29 01:22:28,271 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:28,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:22:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 01:22:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 01:22:28,277 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) [2023-11-29 01:22:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2023-11-29 01:22:28,278 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2023-11-29 01:22:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:28,279 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2023-11-29 01:22:28,279 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) [2023-11-29 01:22:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2023-11-29 01:22:28,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 01:22:28,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:28,280 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] [2023-11-29 01:22:28,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:22:28,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:28,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:28,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2023-11-29 01:22:28,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:28,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881820496] [2023-11-29 01:22:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:28,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:22:29,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881820496] [2023-11-29 01:22:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881820496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134808199] [2023-11-29 01:22:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:29,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:29,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:29,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:22:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:31,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 6120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:22:31,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:22:31,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:22:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134808199] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:31,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:31,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 01:22:31,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544094125] [2023-11-29 01:22:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:31,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:22:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:22:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:22:31,343 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) [2023-11-29 01:22:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:31,827 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2023-11-29 01:22:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:22:31,828 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 [2023-11-29 01:22:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:31,829 INFO L225 Difference]: With dead ends: 69 [2023-11-29 01:22:31,829 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 01:22:31,829 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 [2023-11-29 01:22:31,830 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:31,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:22:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 01:22:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 01:22:31,837 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) [2023-11-29 01:22:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-11-29 01:22:31,838 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2023-11-29 01:22:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:31,838 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-11-29 01:22:31,838 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) [2023-11-29 01:22:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-11-29 01:22:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 01:22:31,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:31,840 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] [2023-11-29 01:22:31,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 01:22:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:32,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:32,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2023-11-29 01:22:32,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:32,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716971641] [2023-11-29 01:22:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:32,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:22:32,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:32,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716971641] [2023-11-29 01:22:32,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716971641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:32,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958836924] [2023-11-29 01:22:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:32,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:32,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:32,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:22:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:34,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 6138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:22:34,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:22:34,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:22:34,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958836924] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:34,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:34,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 01:22:34,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095509112] [2023-11-29 01:22:34,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:34,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:22:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:22:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:22:34,316 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) [2023-11-29 01:22:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:34,742 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2023-11-29 01:22:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:22:34,743 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 [2023-11-29 01:22:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:34,744 INFO L225 Difference]: With dead ends: 86 [2023-11-29 01:22:34,744 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 01:22:34,744 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 [2023-11-29 01:22:34,745 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:34,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:22:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 01:22:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-29 01:22:34,751 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) [2023-11-29 01:22:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2023-11-29 01:22:34,752 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2023-11-29 01:22:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:34,752 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2023-11-29 01:22:34,752 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) [2023-11-29 01:22:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2023-11-29 01:22:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 01:22:34,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:34,754 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] [2023-11-29 01:22:34,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:22:34,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:34,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:34,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2023-11-29 01:22:34,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:34,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621820878] [2023-11-29 01:22:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:34,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:22:35,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621820878] [2023-11-29 01:22:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621820878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776520298] [2023-11-29 01:22:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:35,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:35,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:35,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:35,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:22:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:37,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 6144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:22:37,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:22:37,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:22:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776520298] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:37,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:37,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 01:22:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876197729] [2023-11-29 01:22:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:37,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:22:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:22:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:22:37,319 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) [2023-11-29 01:22:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:37,824 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2023-11-29 01:22:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:22:37,825 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 [2023-11-29 01:22:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:37,825 INFO L225 Difference]: With dead ends: 76 [2023-11-29 01:22:37,826 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 01:22:37,826 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 [2023-11-29 01:22:37,826 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:37,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:22:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 01:22:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-29 01:22:37,832 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) [2023-11-29 01:22:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2023-11-29 01:22:37,833 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2023-11-29 01:22:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:37,833 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2023-11-29 01:22:37,834 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) [2023-11-29 01:22:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2023-11-29 01:22:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 01:22:37,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:37,835 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] [2023-11-29 01:22:37,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:22:38,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:38,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:38,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2023-11-29 01:22:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112925939] [2023-11-29 01:22:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:22:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112925939] [2023-11-29 01:22:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112925939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151200976] [2023-11-29 01:22:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:38,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:38,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:38,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:22:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:40,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 6150 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:22:40,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:22:40,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:22:40,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151200976] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:40,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:40,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 01:22:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013901802] [2023-11-29 01:22:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:40,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:22:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:22:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:22:40,369 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) [2023-11-29 01:22:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:40,851 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-29 01:22:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:22:40,851 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 [2023-11-29 01:22:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:40,852 INFO L225 Difference]: With dead ends: 66 [2023-11-29 01:22:40,852 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 01:22:40,852 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 [2023-11-29 01:22:40,853 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:40,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:22:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 01:22:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-29 01:22:40,858 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) [2023-11-29 01:22:40,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2023-11-29 01:22:40,859 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2023-11-29 01:22:40,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:40,859 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2023-11-29 01:22:40,859 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) [2023-11-29 01:22:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-11-29 01:22:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:22:40,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:40,860 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] [2023-11-29 01:22:40,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:22:41,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:41,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:41,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2023-11-29 01:22:41,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:41,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104215860] [2023-11-29 01:22:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:22:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104215860] [2023-11-29 01:22:42,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104215860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311746812] [2023-11-29 01:22:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:42,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:42,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:42,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:22:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:43,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 6156 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:22:43,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:22:43,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:22:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311746812] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:43,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:43,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-29 01:22:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020423093] [2023-11-29 01:22:43,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:43,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:22:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:22:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:22:43,350 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2023-11-29 01:22:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:44,368 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2023-11-29 01:22:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:22:44,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 55 [2023-11-29 01:22:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:44,369 INFO L225 Difference]: With dead ends: 107 [2023-11-29 01:22:44,369 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 01:22:44,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:22:44,370 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:44,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 273 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:22:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 01:22:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-29 01:22:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 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) [2023-11-29 01:22:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2023-11-29 01:22:44,378 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 55 [2023-11-29 01:22:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:44,378 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2023-11-29 01:22:44,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2023-11-29 01:22:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2023-11-29 01:22:44,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 01:22:44,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:44,379 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 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] [2023-11-29 01:22:44,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 01:22:44,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:44,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:44,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:44,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1849547982, now seen corresponding path program 2 times [2023-11-29 01:22:44,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:44,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874074224] [2023-11-29 01:22:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:44,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 01:22:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874074224] [2023-11-29 01:22:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874074224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809049705] [2023-11-29 01:22:45,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:22:45,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:45,565 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:45,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:22:47,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:22:47,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:22:47,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 6221 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:22:47,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:22:47,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:22:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809049705] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 8] total 12 [2023-11-29 01:22:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613548911] [2023-11-29 01:22:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:22:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:22:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:22:47,165 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-29 01:22:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:47,676 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2023-11-29 01:22:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:22:47,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 65 [2023-11-29 01:22:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:47,677 INFO L225 Difference]: With dead ends: 82 [2023-11-29 01:22:47,677 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 01:22:47,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:22:47,678 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:47,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:22:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 01:22:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 01:22:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 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) [2023-11-29 01:22:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2023-11-29 01:22:47,684 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2023-11-29 01:22:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:47,684 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2023-11-29 01:22:47,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-29 01:22:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2023-11-29 01:22:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 01:22:47,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:47,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 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] [2023-11-29 01:22:47,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:22:47,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:22:47,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:47,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 1 times [2023-11-29 01:22:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:47,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514835848] [2023-11-29 01:22:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:47,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 01:22:48,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:48,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514835848] [2023-11-29 01:22:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514835848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:48,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137913046] [2023-11-29 01:22:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:48,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:48,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:48,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:48,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:22:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:50,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 6235 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:22:50,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:22:50,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 01:22:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137913046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:50,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:50,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 11 [2023-11-29 01:22:50,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939272624] [2023-11-29 01:22:50,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:22:50,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:22:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:22:50,530 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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) [2023-11-29 01:22:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:51,470 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2023-11-29 01:22:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:22:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 68 [2023-11-29 01:22:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:51,472 INFO L225 Difference]: With dead ends: 128 [2023-11-29 01:22:51,472 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 01:22:51,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:22:51,473 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:51,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 374 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:22:51,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 01:22:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 01:22:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 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) [2023-11-29 01:22:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2023-11-29 01:22:51,480 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 68 [2023-11-29 01:22:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:51,480 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2023-11-29 01:22:51,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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) [2023-11-29 01:22:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2023-11-29 01:22:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:22:51,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:51,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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] [2023-11-29 01:22:51,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:22:51,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:22:51,682 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:51,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 2 times [2023-11-29 01:22:51,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:51,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041113714] [2023-11-29 01:22:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:51,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 01:22:52,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:52,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041113714] [2023-11-29 01:22:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041113714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722560364] [2023-11-29 01:22:52,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:22:52,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:52,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:52,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:52,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:22:54,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:22:54,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:22:54,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 6300 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:22:54,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 01:22:54,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:22:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722560364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:54,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:54,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2023-11-29 01:22:54,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151101072] [2023-11-29 01:22:54,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:54,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:22:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:22:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:22:54,350 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 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) [2023-11-29 01:22:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:55,571 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2023-11-29 01:22:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:22:55,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 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 78 [2023-11-29 01:22:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:55,573 INFO L225 Difference]: With dead ends: 146 [2023-11-29 01:22:55,573 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 01:22:55,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:22:55,574 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:55,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 552 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:22:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 01:22:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-11-29 01:22:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 89 states have internal predecessors, (118), 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) [2023-11-29 01:22:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2023-11-29 01:22:55,581 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 78 [2023-11-29 01:22:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:55,581 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2023-11-29 01:22:55,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 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) [2023-11-29 01:22:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2023-11-29 01:22:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:22:55,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:55,582 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 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] [2023-11-29 01:22:55,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:22:55,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:22:55,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:55,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1427743436, now seen corresponding path program 3 times [2023-11-29 01:22:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871460892] [2023-11-29 01:22:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-29 01:22:56,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871460892] [2023-11-29 01:22:56,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871460892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671614138] [2023-11-29 01:22:56,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:22:56,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:56,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:56,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:56,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:22:58,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:22:58,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:22:58,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:22:58,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:22:58,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 01:22:58,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671614138] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:58,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:58,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2023-11-29 01:22:58,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724221526] [2023-11-29 01:22:58,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:58,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:22:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:58,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:22:58,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:22:58,610 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2023-11-29 01:22:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:59,021 INFO L93 Difference]: Finished difference Result 125 states and 165 transitions. [2023-11-29 01:22:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:22:59,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 85 [2023-11-29 01:22:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:59,022 INFO L225 Difference]: With dead ends: 125 [2023-11-29 01:22:59,022 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 01:22:59,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:22:59,023 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:59,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:22:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 01:22:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 01:22:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 90 states have internal predecessors, (119), 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) [2023-11-29 01:22:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2023-11-29 01:22:59,030 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 85 [2023-11-29 01:22:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:59,031 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2023-11-29 01:22:59,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2023-11-29 01:22:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2023-11-29 01:22:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:22:59,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:59,032 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 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] [2023-11-29 01:22:59,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:22:59,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:59,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:59,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash 642434296, now seen corresponding path program 1 times [2023-11-29 01:22:59,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294989831] [2023-11-29 01:22:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:59,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 01:23:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294989831] [2023-11-29 01:23:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294989831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002354088] [2023-11-29 01:23:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:00,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:00,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:00,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:00,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:23:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:01,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 6357 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:23:01,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 01:23:01,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 01:23:02,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002354088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:02,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:23:02,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2023-11-29 01:23:02,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80733338] [2023-11-29 01:23:02,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:02,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:23:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:23:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:23:02,046 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 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) [2023-11-29 01:23:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:04,142 INFO L93 Difference]: Finished difference Result 173 states and 235 transitions. [2023-11-29 01:23:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 01:23:04,142 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 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 88 [2023-11-29 01:23:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:04,143 INFO L225 Difference]: With dead ends: 173 [2023-11-29 01:23:04,143 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 01:23:04,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:23:04,144 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:04,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 891 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:23:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 01:23:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-11-29 01:23:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3211009174311927) internal successors, (144), 109 states have internal predecessors, (144), 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) [2023-11-29 01:23:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2023-11-29 01:23:04,151 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 144 transitions. Word has length 88 [2023-11-29 01:23:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:04,152 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 144 transitions. [2023-11-29 01:23:04,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 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) [2023-11-29 01:23:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 144 transitions. [2023-11-29 01:23:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:23:04,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:04,153 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 2, 2, 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] [2023-11-29 01:23:04,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:04,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:04,353 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:04,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash -645110381, now seen corresponding path program 2 times [2023-11-29 01:23:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:04,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068585457] [2023-11-29 01:23:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-29 01:23:05,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:05,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068585457] [2023-11-29 01:23:05,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068585457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:05,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009626202] [2023-11-29 01:23:05,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:23:05,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:05,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:05,598 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:05,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:23:07,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:23:07,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:07,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 6476 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:23:07,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-29 01:23:07,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 01:23:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009626202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:07,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:23:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 26 [2023-11-29 01:23:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350151313] [2023-11-29 01:23:07,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:23:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:23:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:23:07,665 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 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) [2023-11-29 01:23:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:10,862 INFO L93 Difference]: Finished difference Result 211 states and 286 transitions. [2023-11-29 01:23:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:23:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 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 107 [2023-11-29 01:23:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:10,864 INFO L225 Difference]: With dead ends: 211 [2023-11-29 01:23:10,864 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 01:23:10,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:23:10,865 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 66 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:10,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1103 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 01:23:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 01:23:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-29 01:23:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3206106870229009) internal successors, (173), 131 states have internal predecessors, (173), 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) [2023-11-29 01:23:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 173 transitions. [2023-11-29 01:23:10,871 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 173 transitions. Word has length 107 [2023-11-29 01:23:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:10,871 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 173 transitions. [2023-11-29 01:23:10,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 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) [2023-11-29 01:23:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 173 transitions. [2023-11-29 01:23:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 01:23:10,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:10,872 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 2, 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] [2023-11-29 01:23:10,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:23:11,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:23:11,073 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:11,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash -461797041, now seen corresponding path program 3 times [2023-11-29 01:23:11,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:11,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740125751] [2023-11-29 01:23:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-29 01:23:12,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:12,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740125751] [2023-11-29 01:23:12,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740125751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854845078] [2023-11-29 01:23:12,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:23:12,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:12,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:12,525 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:12,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:23:14,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:23:14,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:14,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:23:14,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-29 01:23:14,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-11-29 01:23:14,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854845078] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:14,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:14,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 13 [2023-11-29 01:23:14,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65343595] [2023-11-29 01:23:14,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:14,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:14,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:23:14,546 INFO L87 Difference]: Start difference. First operand 132 states and 173 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-29 01:23:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:14,963 INFO L93 Difference]: Finished difference Result 231 states and 306 transitions. [2023-11-29 01:23:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:14,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 129 [2023-11-29 01:23:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:14,966 INFO L225 Difference]: With dead ends: 231 [2023-11-29 01:23:14,966 INFO L226 Difference]: Without dead ends: 133 [2023-11-29 01:23:14,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:23:14,967 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:14,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:23:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-29 01:23:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-29 01:23:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 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) [2023-11-29 01:23:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2023-11-29 01:23:14,974 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 129 [2023-11-29 01:23:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:14,974 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2023-11-29 01:23:14,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-29 01:23:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2023-11-29 01:23:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 01:23:14,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:14,975 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 2, 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] [2023-11-29 01:23:14,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:23:15,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:23:15,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1904446591, now seen corresponding path program 1 times [2023-11-29 01:23:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107587333] [2023-11-29 01:23:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-29 01:23:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107587333] [2023-11-29 01:23:16,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107587333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589865802] [2023-11-29 01:23:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:16,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:16,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:16,457 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:16,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:23:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:17,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 6627 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 01:23:17,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 01:23:18,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-29 01:23:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589865802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:18,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:23:18,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 24, 13] total 42 [2023-11-29 01:23:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037464098] [2023-11-29 01:23:18,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 01:23:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 01:23:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:23:18,806 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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) [2023-11-29 01:23:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:29,850 INFO L93 Difference]: Finished difference Result 271 states and 370 transitions. [2023-11-29 01:23:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 01:23:29,850 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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 132 [2023-11-29 01:23:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:29,851 INFO L225 Difference]: With dead ends: 271 [2023-11-29 01:23:29,852 INFO L226 Difference]: Without dead ends: 170 [2023-11-29 01:23:29,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=448, Invalid=2204, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 01:23:29,854 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 147 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:29,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1919 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 01:23:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-29 01:23:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-29 01:23:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.319526627218935) internal successors, (223), 169 states have internal predecessors, (223), 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) [2023-11-29 01:23:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 223 transitions. [2023-11-29 01:23:29,864 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 223 transitions. Word has length 132 [2023-11-29 01:23:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:29,864 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 223 transitions. [2023-11-29 01:23:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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) [2023-11-29 01:23:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 223 transitions. [2023-11-29 01:23:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-29 01:23:29,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:29,866 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 12, 12, 12, 7, 2, 2, 2, 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] [2023-11-29 01:23:29,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:23:30,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:23:30,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:30,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash 81179708, now seen corresponding path program 2 times [2023-11-29 01:23:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469581413] [2023-11-29 01:23:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2023-11-29 01:23:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469581413] [2023-11-29 01:23:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469581413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33511680] [2023-11-29 01:23:31,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:23:31,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:31,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:31,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:31,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:23:33,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:23:33,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:33,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 6854 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 01:23:33,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2023-11-29 01:23:33,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 370 proven. 420 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-29 01:23:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33511680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:34,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:23:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 28] total 49 [2023-11-29 01:23:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123560140] [2023-11-29 01:23:34,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 01:23:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 01:23:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2081, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:23:34,889 INFO L87 Difference]: Start difference. First operand 170 states and 223 transitions. Second operand has 49 states, 49 states have (on average 3.979591836734694) internal successors, (195), 49 states have internal predecessors, (195), 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) [2023-11-29 01:23:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:50,534 INFO L93 Difference]: Finished difference Result 350 states and 477 transitions. [2023-11-29 01:23:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 01:23:50,535 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.979591836734694) internal successors, (195), 49 states have internal predecessors, (195), 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 169 [2023-11-29 01:23:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:50,536 INFO L225 Difference]: With dead ends: 350 [2023-11-29 01:23:50,536 INFO L226 Difference]: Without dead ends: 213 [2023-11-29 01:23:50,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=607, Invalid=3053, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 01:23:50,538 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 193 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:50,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1874 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 01:23:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-29 01:23:50,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-29 01:23:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.320754716981132) internal successors, (280), 212 states have internal predecessors, (280), 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) [2023-11-29 01:23:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2023-11-29 01:23:50,546 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 169 [2023-11-29 01:23:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:50,546 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2023-11-29 01:23:50,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.979591836734694) internal successors, (195), 49 states have internal predecessors, (195), 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) [2023-11-29 01:23:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2023-11-29 01:23:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 01:23:50,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:50,548 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 22, 22, 22, 8, 2, 2, 2, 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] [2023-11-29 01:23:50,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:23:50,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:23:50,748 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:50,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2072713407, now seen corresponding path program 3 times [2023-11-29 01:23:50,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:50,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299051015] [2023-11-29 01:23:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:50,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2023-11-29 01:23:54,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299051015] [2023-11-29 01:23:54,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299051015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397689742] [2023-11-29 01:23:54,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:23:54,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:54,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:54,616 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:54,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:23:57,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:23:57,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:57,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 6267 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:23:57,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1750 trivial. 0 not checked. [2023-11-29 01:23:57,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2023-11-29 01:23:57,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397689742] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:57,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:57,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29, 6] total 35 [2023-11-29 01:23:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31995970] [2023-11-29 01:23:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:57,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:23:57,779 INFO L87 Difference]: Start difference. First operand 213 states and 280 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-29 01:23:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:58,176 INFO L93 Difference]: Finished difference Result 303 states and 400 transitions. [2023-11-29 01:23:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:58,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 212 [2023-11-29 01:23:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:58,179 INFO L225 Difference]: With dead ends: 303 [2023-11-29 01:23:58,179 INFO L226 Difference]: Without dead ends: 214 [2023-11-29 01:23:58,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:23:58,180 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:58,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:23:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-29 01:23:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-29 01:23:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.3192488262910798) internal successors, (281), 213 states have internal predecessors, (281), 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) [2023-11-29 01:23:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 281 transitions. [2023-11-29 01:23:58,189 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 281 transitions. Word has length 212 [2023-11-29 01:23:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:58,189 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 281 transitions. [2023-11-29 01:23:58,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-29 01:23:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 281 transitions. [2023-11-29 01:23:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-29 01:23:58,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:58,190 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 22, 22, 22, 8, 2, 2, 2, 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] [2023-11-29 01:23:58,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:23:58,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:58,391 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:58,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1680534967, now seen corresponding path program 1 times [2023-11-29 01:23:58,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:58,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656136121] [2023-11-29 01:23:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:58,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2023-11-29 01:24:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:02,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656136121] [2023-11-29 01:24:02,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656136121] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115876479] [2023-11-29 01:24:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:02,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:02,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:02,072 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:02,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:24:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:03,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 7122 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:24:03,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2023-11-29 01:24:04,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2023-11-29 01:24:04,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115876479] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:04,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:04,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29, 13] total 42 [2023-11-29 01:24:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411454311] [2023-11-29 01:24:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:04,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:24:04,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:24:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1610, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:24:04,152 INFO L87 Difference]: Start difference. First operand 214 states and 281 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-29 01:24:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:04,560 INFO L93 Difference]: Finished difference Result 393 states and 520 transitions. [2023-11-29 01:24:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:24:04,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 213 [2023-11-29 01:24:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:04,561 INFO L225 Difference]: With dead ends: 393 [2023-11-29 01:24:04,561 INFO L226 Difference]: Without dead ends: 215 [2023-11-29 01:24:04,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=1610, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:24:04,563 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:04,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:24:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-29 01:24:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-11-29 01:24:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.3177570093457944) internal successors, (282), 214 states have internal predecessors, (282), 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) [2023-11-29 01:24:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2023-11-29 01:24:04,571 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 213 [2023-11-29 01:24:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:04,572 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2023-11-29 01:24:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-29 01:24:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2023-11-29 01:24:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-29 01:24:04,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:04,573 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 22, 22, 22, 8, 2, 2, 2, 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, 1] [2023-11-29 01:24:04,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:24:04,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:04,774 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:24:04,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1869442415, now seen corresponding path program 1 times [2023-11-29 01:24:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:04,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916622341] [2023-11-29 01:24:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:04,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-11-29 01:24:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916622341] [2023-11-29 01:24:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916622341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560660170] [2023-11-29 01:24:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:08,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:08,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:08,155 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:08,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:24:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:09,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 7127 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 01:24:09,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1698 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 01:24:10,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2023-11-29 01:24:12,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560660170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:12,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:12,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 48, 25] total 75 [2023-11-29 01:24:12,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115883325] [2023-11-29 01:24:12,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-11-29 01:24:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-11-29 01:24:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=4848, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 01:24:12,169 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 75 states, 75 states have (on average 3.8933333333333335) internal successors, (292), 75 states have internal predecessors, (292), 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) [2023-11-29 01:27:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:13,733 INFO L93 Difference]: Finished difference Result 384 states and 531 transitions. [2023-11-29 01:27:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-29 01:27:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.8933333333333335) internal successors, (292), 75 states have internal predecessors, (292), 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 214 [2023-11-29 01:27:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:13,736 INFO L225 Difference]: With dead ends: 384 [2023-11-29 01:27:13,736 INFO L226 Difference]: Without dead ends: 292 [2023-11-29 01:27:13,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 174.5s TimeCoverageRelationStatistics Valid=1757, Invalid=7554, Unknown=1, NotChecked=0, Total=9312 [2023-11-29 01:27:13,739 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 563 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 7686 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 4497 SdHoareTripleChecker+Invalid, 7688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:13,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 4497 Invalid, 7688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7686 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-29 01:27:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-29 01:27:13,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2023-11-29 01:27:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.3217993079584776) internal successors, (382), 289 states have internal predecessors, (382), 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) [2023-11-29 01:27:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 382 transitions. [2023-11-29 01:27:13,750 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 382 transitions. Word has length 214 [2023-11-29 01:27:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:13,751 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 382 transitions. [2023-11-29 01:27:13,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.8933333333333335) internal successors, (292), 75 states have internal predecessors, (292), 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) [2023-11-29 01:27:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 382 transitions. [2023-11-29 01:27:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-11-29 01:27:13,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:13,752 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 27, 27, 27, 8, 2, 2, 2, 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, 1] [2023-11-29 01:27:13,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:27:13,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:13,953 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:13,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 293783672, now seen corresponding path program 2 times [2023-11-29 01:27:13,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:13,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7813996] [2023-11-29 01:27:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-29 01:27:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7813996] [2023-11-29 01:27:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7813996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621945235] [2023-11-29 01:27:18,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:27:18,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:18,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:18,182 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:18,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:27:20,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:27:20,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:20,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 7577 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-29 01:27:20,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-29 01:27:20,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 1558 proven. 2160 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-29 01:27:24,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621945235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:24,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:27:24,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 58] total 87 [2023-11-29 01:27:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275042127] [2023-11-29 01:27:24,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:24,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-11-29 01:27:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-11-29 01:27:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1011, Invalid=6471, Unknown=0, NotChecked=0, Total=7482 [2023-11-29 01:27:24,096 INFO L87 Difference]: Start difference. First operand 290 states and 382 transitions. Second operand has 87 states, 87 states have (on average 3.586206896551724) internal successors, (312), 87 states have internal predecessors, (312), 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) [2023-11-29 01:34:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:00,735 INFO L93 Difference]: Finished difference Result 541 states and 744 transitions. [2023-11-29 01:34:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 01:34:00,736 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.586206896551724) internal successors, (312), 87 states have internal predecessors, (312), 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 289 [2023-11-29 01:34:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:00,738 INFO L225 Difference]: With dead ends: 541 [2023-11-29 01:34:00,738 INFO L226 Difference]: Without dead ends: 377 [2023-11-29 01:34:00,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 390.9s TimeCoverageRelationStatistics Valid=2604, Invalid=10278, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 01:34:00,744 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 804 mSDsluCounter, 4480 mSDsCounter, 0 mSdLazyCounter, 5911 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 4562 SdHoareTripleChecker+Invalid, 5914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:00,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 4562 Invalid, 5914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5911 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-29 01:34:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-29 01:34:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-29 01:34:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.324468085106383) internal successors, (498), 376 states have internal predecessors, (498), 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) [2023-11-29 01:34:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 498 transitions. [2023-11-29 01:34:00,762 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 498 transitions. Word has length 289 [2023-11-29 01:34:00,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:34:00,762 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 498 transitions. [2023-11-29 01:34:00,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.586206896551724) internal successors, (312), 87 states have internal predecessors, (312), 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) [2023-11-29 01:34:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 498 transitions. [2023-11-29 01:34:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-29 01:34:00,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:34:00,765 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 46, 46, 46, 8, 2, 2, 2, 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, 1] [2023-11-29 01:34:00,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 01:34:00,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:00,966 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:34:00,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash 265422961, now seen corresponding path program 3 times [2023-11-29 01:34:00,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:00,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972517195] [2023-11-29 01:34:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-29 01:34:10,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:10,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972517195] [2023-11-29 01:34:10,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972517195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:10,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530193981] [2023-11-29 01:34:10,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:34:10,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:10,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:10,336 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:10,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:34:15,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:34:15,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:34:15,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 6267 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 01:34:15,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 7858 trivial. 0 not checked. [2023-11-29 01:34:16,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:34:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7873 trivial. 0 not checked. [2023-11-29 01:34:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530193981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:34:16,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:34:16,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 7, 5] total 67 [2023-11-29 01:34:16,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646178990] [2023-11-29 01:34:16,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:34:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-29 01:34:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-29 01:34:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4226, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 01:34:16,401 INFO L87 Difference]: Start difference. First operand 377 states and 498 transitions. Second operand has 67 states, 67 states have (on average 3.8059701492537314) internal successors, (255), 67 states have internal predecessors, (255), 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) [2023-11-29 01:34:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:28,142 INFO L93 Difference]: Finished difference Result 735 states and 978 transitions. [2023-11-29 01:34:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-29 01:34:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.8059701492537314) internal successors, (255), 67 states have internal predecessors, (255), 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 376 [2023-11-29 01:34:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:28,146 INFO L225 Difference]: With dead ends: 735 [2023-11-29 01:34:28,146 INFO L226 Difference]: Without dead ends: 394 [2023-11-29 01:34:28,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=212, Invalid=4480, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:34:28,148 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 106 mSDsluCounter, 5490 mSDsCounter, 0 mSdLazyCounter, 11581 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 11583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:28,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 5599 Invalid, 11583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 11581 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-11-29 01:34:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-29 01:34:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2023-11-29 01:34:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.3222506393861893) internal successors, (517), 391 states have internal predecessors, (517), 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) [2023-11-29 01:34:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 517 transitions. [2023-11-29 01:34:28,178 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 517 transitions. Word has length 376 [2023-11-29 01:34:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:34:28,179 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 517 transitions. [2023-11-29 01:34:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.8059701492537314) internal successors, (255), 67 states have internal predecessors, (255), 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) [2023-11-29 01:34:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 517 transitions. [2023-11-29 01:34:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-11-29 01:34:28,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:34:28,182 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 46, 46, 46, 8, 4, 4, 4, 4, 2, 2, 2, 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] [2023-11-29 01:34:28,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:34:28,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:28,383 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:34:28,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1467338976, now seen corresponding path program 4 times [2023-11-29 01:34:28,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:28,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999861155] [2023-11-29 01:34:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 3241 trivial. 0 not checked. [2023-11-29 01:34:40,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:40,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999861155] [2023-11-29 01:34:40,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999861155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:40,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287525701] [2023-11-29 01:34:40,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:34:40,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:40,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:40,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d0dafb-0650-4846-aac2-6dc83c8383d8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:34:42,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:34:42,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:34:42,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 8174 conjuncts, 190 conjunts are in the unsatisfiable core [2023-11-29 01:34:42,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 7831 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-29 01:34:46,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:34:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 4935 trivial. 0 not checked. [2023-11-29 01:34:52,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287525701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:34:52,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:34:52,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 96, 49] total 154 [2023-11-29 01:34:52,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520008216] [2023-11-29 01:34:52,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:34:52,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2023-11-29 01:34:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2023-11-29 01:34:52,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2136, Invalid=21426, Unknown=0, NotChecked=0, Total=23562 [2023-11-29 01:34:52,688 INFO L87 Difference]: Start difference. First operand 392 states and 517 transitions. Second operand has 154 states, 154 states have (on average 3.435064935064935) internal successors, (529), 154 states have internal predecessors, (529), 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)