./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/robot_9_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_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/robot_9_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI --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 9a7a649b46235d855d95a99bce1d576f9d989cc4939f6469a5b25d81f5f14b43 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:39:02,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:39:02,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:39:02,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:39:02,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:39:02,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:39:02,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:39:02,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:39:02,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:39:02,913 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:39:02,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:39:02,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:39:02,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:39:02,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:39:02,918 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:39:02,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:39:02,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:39:02,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:39:02,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:39:02,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:39:02,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:39:02,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:39:02,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:39:02,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:39:02,924 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:39:02,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:39:02,925 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:39:02,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:39:02,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:39:02,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:39:02,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:39:02,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:39:02,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:39:02,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:39:02,930 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:39:02,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:39:02,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:39:02,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:39:02,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:39:02,932 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:39:02,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:39:02,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:39:02,933 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_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7a649b46235d855d95a99bce1d576f9d989cc4939f6469a5b25d81f5f14b43 [2023-11-24 21:39:03,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:39:03,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:39:03,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:39:03,257 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:39:03,258 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:39:03,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/neural-networks/robot_9_unsafe.c-amalgamation.i [2023-11-24 21:39:06,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:39:06,960 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:39:06,961 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/sv-benchmarks/c/neural-networks/robot_9_unsafe.c-amalgamation.i [2023-11-24 21:39:07,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/data/de82b59ed/caac64dadd914bf0918c85cb318328f0/FLAG2a0bcb604 [2023-11-24 21:39:07,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/data/de82b59ed/caac64dadd914bf0918c85cb318328f0 [2023-11-24 21:39:07,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:39:07,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:39:07,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:39:07,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:39:07,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:39:07,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:39:07" (1/1) ... [2023-11-24 21:39:07,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7d99ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:07, skipping insertion in model container [2023-11-24 21:39:07,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:39:07" (1/1) ... [2023-11-24 21:39:07,245 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:39:08,611 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_4dd27e58-6d30-4a1f-8b3b-9c664398642d/sv-benchmarks/c/neural-networks/robot_9_unsafe.c-amalgamation.i[63906,63919] [2023-11-24 21:39:09,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:39:09,242 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:39:09,366 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_4dd27e58-6d30-4a1f-8b3b-9c664398642d/sv-benchmarks/c/neural-networks/robot_9_unsafe.c-amalgamation.i[63906,63919] [2023-11-24 21:39:09,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:39:10,071 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:39:10,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10 WrapperNode [2023-11-24 21:39:10,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:39:10,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:39:10,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:39:10,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:39:10,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:10,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:10,910 INFO L138 Inliner]: procedures = 621, calls = 9239, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 9601 [2023-11-24 21:39:10,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:39:10,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:39:10,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:39:10,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:39:10,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:10,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,216 INFO L175 MemorySlicer]: Split 9211 memory accesses to 14 slices as follows [2, 7, 321, 65, 16, 4097, 65, 4097, 65, 321, 6, 73, 6, 70]. 44 percent of accesses are in the largest equivalence class. The 9166 initializations are split as follows [2, 7, 320, 64, 0, 4096, 64, 4096, 64, 320, 5, 64, 0, 64]. The 12 writes are split as follows [0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 3, 1, 3]. [2023-11-24 21:39:11,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:39:11,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:39:11,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:39:11,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:39:11,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (1/1) ... [2023-11-24 21:39:11,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:39:11,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:11,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:39:11,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:39:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-24 21:39:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-24 21:39:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-24 21:39:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-24 21:39:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-24 21:39:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-24 21:39:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-24 21:39:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-24 21:39:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-24 21:39:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-24 21:39:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-24 21:39:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-24 21:39:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2023-11-24 21:39:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2023-11-24 21:39:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:39:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-24 21:39:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-24 21:39:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-24 21:39:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-24 21:39:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-24 21:39:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-24 21:39:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-24 21:39:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-24 21:39:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-24 21:39:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-24 21:39:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-24 21:39:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-24 21:39:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2023-11-24 21:39:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2023-11-24 21:39:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-24 21:39:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-24 21:39:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-24 21:39:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-24 21:39:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-24 21:39:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-24 21:39:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-24 21:39:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-24 21:39:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-24 21:39:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-24 21:39:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-24 21:39:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-24 21:39:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2023-11-24 21:39:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2023-11-24 21:39:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:39:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:39:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:39:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:39:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:39:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:39:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:39:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:39:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:39:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 21:39:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-24 21:39:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-24 21:39:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-24 21:39:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-24 21:39:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-24 21:39:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-24 21:39:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-24 21:39:12,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-24 21:39:12,331 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:39:12,333 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:39:36,151 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:39:36,937 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:39:36,937 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-24 21:39:36,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:39:36 BoogieIcfgContainer [2023-11-24 21:39:36,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:39:36,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:39:36,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:39:36,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:39:36,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:39:07" (1/3) ... [2023-11-24 21:39:36,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:39:36, skipping insertion in model container [2023-11-24 21:39:36,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:10" (2/3) ... [2023-11-24 21:39:36,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:39:36, skipping insertion in model container [2023-11-24 21:39:36,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:39:36" (3/3) ... [2023-11-24 21:39:36,954 INFO L112 eAbstractionObserver]: Analyzing ICFG robot_9_unsafe.c-amalgamation.i [2023-11-24 21:39:36,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:39:36,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:39:37,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:39:37,051 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;@1d2aac74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:39:37,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:39:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 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) [2023-11-24 21:39:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 21:39:37,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:37,068 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] [2023-11-24 21:39:37,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:37,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1999498850, now seen corresponding path program 1 times [2023-11-24 21:39:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:37,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49617519] [2023-11-24 21:39:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:37,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49617519] [2023-11-24 21:39:39,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49617519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:39,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:39:39,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374142964] [2023-11-24 21:39:39,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:39,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:39:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:39:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:39:39,276 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 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) [2023-11-24 21:39:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:40,105 INFO L93 Difference]: Finished difference Result 125 states and 217 transitions. [2023-11-24 21:39:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:39:40,108 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 [2023-11-24 21:39:40,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:40,118 INFO L225 Difference]: With dead ends: 125 [2023-11-24 21:39:40,119 INFO L226 Difference]: Without dead ends: 62 [2023-11-24 21:39:40,122 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 [2023-11-24 21:39:40,127 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:40,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:39:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-24 21:39:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-24 21:39:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 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) [2023-11-24 21:39:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2023-11-24 21:39:40,174 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 39 [2023-11-24 21:39:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:40,175 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2023-11-24 21:39:40,176 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) [2023-11-24 21:39:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2023-11-24 21:39:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 21:39:40,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:40,178 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] [2023-11-24 21:39:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:39:40,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:40,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1543540249, now seen corresponding path program 1 times [2023-11-24 21:39:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:40,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963781821] [2023-11-24 21:39:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963781821] [2023-11-24 21:39:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963781821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:41,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:41,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:39:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184340858] [2023-11-24 21:39:41,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:39:41,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:41,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:39:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:39:41,758 INFO L87 Difference]: Start difference. First operand 62 states and 88 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) [2023-11-24 21:39:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:42,704 INFO L93 Difference]: Finished difference Result 116 states and 165 transitions. [2023-11-24 21:39:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:39:42,706 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 [2023-11-24 21:39:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:42,707 INFO L225 Difference]: With dead ends: 116 [2023-11-24 21:39:42,707 INFO L226 Difference]: Without dead ends: 62 [2023-11-24 21:39:42,708 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 [2023-11-24 21:39:42,709 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:42,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:39:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-24 21:39:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-24 21:39:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 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) [2023-11-24 21:39:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2023-11-24 21:39:42,720 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 39 [2023-11-24 21:39:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:42,720 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2023-11-24 21:39:42,720 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) [2023-11-24 21:39:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2023-11-24 21:39:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 21:39:42,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:42,723 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] [2023-11-24 21:39:42,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:39:42,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:42,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1268780635, now seen corresponding path program 1 times [2023-11-24 21:39:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:42,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467756230] [2023-11-24 21:39:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:44,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:44,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467756230] [2023-11-24 21:39:44,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467756230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:44,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:44,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:39:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435162142] [2023-11-24 21:39:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:44,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:39:44,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:39:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:39:44,938 INFO L87 Difference]: Start difference. First operand 62 states and 87 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) [2023-11-24 21:39:45,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:45,780 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2023-11-24 21:39:45,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:39:45,782 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 [2023-11-24 21:39:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:45,783 INFO L225 Difference]: With dead ends: 102 [2023-11-24 21:39:45,784 INFO L226 Difference]: Without dead ends: 65 [2023-11-24 21:39:45,784 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 [2023-11-24 21:39:45,785 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:45,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:39:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-24 21:39:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2023-11-24 21:39:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 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) [2023-11-24 21:39:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2023-11-24 21:39:45,798 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 39 [2023-11-24 21:39:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:45,799 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2023-11-24 21:39:45,799 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) [2023-11-24 21:39:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2023-11-24 21:39:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 21:39:45,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:45,802 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] [2023-11-24 21:39:45,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:39:45,803 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:45,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1666113522, now seen corresponding path program 1 times [2023-11-24 21:39:45,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:45,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536495839] [2023-11-24 21:39:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:45,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:48,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536495839] [2023-11-24 21:39:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536495839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:39:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586893377] [2023-11-24 21:39:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:48,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:48,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:48,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:39:48,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:39:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:51,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 9957 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:39:51,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:39:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:51,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:39:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:39:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586893377] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 21:39:51,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:39:51,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-24 21:39:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89166492] [2023-11-24 21:39:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:51,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:39:51,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:39:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:39:51,336 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-24 21:39:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:52,107 INFO L93 Difference]: Finished difference Result 91 states and 128 transitions. [2023-11-24 21:39:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:39:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2023-11-24 21:39:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:52,121 INFO L225 Difference]: With dead ends: 91 [2023-11-24 21:39:52,123 INFO L226 Difference]: Without dead ends: 64 [2023-11-24 21:39:52,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:39:52,125 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:52,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:39:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-24 21:39:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-24 21:39:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 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) [2023-11-24 21:39:52,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2023-11-24 21:39:52,146 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 42 [2023-11-24 21:39:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:52,146 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2023-11-24 21:39:52,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-24 21:39:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2023-11-24 21:39:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-24 21:39:52,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:52,150 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] [2023-11-24 21:39:52,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:39:52,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd27e58-6d30-4a1f-8b3b-9c664398642d/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:52,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:52,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1881213728, now seen corresponding path program 1 times [2023-11-24 21:39:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:52,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131640525] [2023-11-24 21:39:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat