./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu --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 5ad013cbadddcdab90e1c66c7d22e00582a9c9a3cc34003c3bfa5d26a4373bc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:10,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:10,811 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:45:10,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:10,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:10,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:10,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:10,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:10,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:10,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:10,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:10,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:10,869 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:10,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:10,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:10,872 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:10,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:10,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:10,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:10,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:10,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:10,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:10,876 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:10,876 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:10,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:10,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:10,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:10,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:10,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:10,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:10,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:10,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:10,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:10,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:10,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:10,883 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:10,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:10,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:10,884 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:10,884 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_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ad013cbadddcdab90e1c66c7d22e00582a9c9a3cc34003c3bfa5d26a4373bc2 [2023-11-19 07:45:11,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:11,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:11,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:11,268 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:11,268 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:11,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i [2023-11-19 07:45:14,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:14,536 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:14,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i [2023-11-19 07:45:14,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data/d0cbabc34/0ded85f0e5af483092d00d8d4f13bdb4/FLAG1bdfcee19 [2023-11-19 07:45:14,571 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data/d0cbabc34/0ded85f0e5af483092d00d8d4f13bdb4 [2023-11-19 07:45:14,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:14,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:14,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:14,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:14,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:14,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:14" (1/1) ... [2023-11-19 07:45:14,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2116e618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:14, skipping insertion in model container [2023-11-19 07:45:14,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:14" (1/1) ... [2023-11-19 07:45:14,642 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:14,834 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_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i[913,926] [2023-11-19 07:45:14,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:14,974 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:14,991 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_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i[913,926] [2023-11-19 07:45:15,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:15,096 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:15,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15 WrapperNode [2023-11-19 07:45:15,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:15,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:15,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:15,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:15,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,208 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 196 [2023-11-19 07:45:15,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:15,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:15,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:15,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:15,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:15,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:15,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:15,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:15,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (1/1) ... [2023-11-19 07:45:15,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:15,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:15,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:15,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:45:15,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:45:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:15,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:15,498 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:15,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:16,057 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:16,069 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:16,069 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:45:16,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:16 BoogieIcfgContainer [2023-11-19 07:45:16,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:16,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:16,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:16,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:16,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:14" (1/3) ... [2023-11-19 07:45:16,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1767e52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:16, skipping insertion in model container [2023-11-19 07:45:16,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:15" (2/3) ... [2023-11-19 07:45:16,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1767e52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:16, skipping insertion in model container [2023-11-19 07:45:16,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:16" (3/3) ... [2023-11-19 07:45:16,089 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-78.i [2023-11-19 07:45:16,111 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:16,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:45:16,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:16,185 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;@6a8f8c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:16,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:45:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 54 states have internal predecessors, (77), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:45:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:45:16,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:16,207 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:16,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:16,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1400602170, now seen corresponding path program 1 times [2023-11-19 07:45:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:16,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101933309] [2023-11-19 07:45:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:16,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:16,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101933309] [2023-11-19 07:45:16,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:45:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251703685] [2023-11-19 07:45:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:16,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:16,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:16,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:45:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:16,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:45:16,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-11-19 07:45:16,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:16,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251703685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:16,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:16,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360107565] [2023-11-19 07:45:16,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:16,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:16,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:16,894 INFO L87 Difference]: Start difference. First operand has 74 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 54 states have internal predecessors, (77), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:45:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:16,929 INFO L93 Difference]: Finished difference Result 141 states and 238 transitions. [2023-11-19 07:45:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:16,932 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), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2023-11-19 07:45:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:16,941 INFO L225 Difference]: With dead ends: 141 [2023-11-19 07:45:16,942 INFO L226 Difference]: Without dead ends: 70 [2023-11-19 07:45:16,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:16,950 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:16,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:16,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-19 07:45:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-19 07:45:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:45:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 106 transitions. [2023-11-19 07:45:17,001 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 106 transitions. Word has length 124 [2023-11-19 07:45:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:17,002 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 106 transitions. [2023-11-19 07:45:17,003 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), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:45:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 106 transitions. [2023-11-19 07:45:17,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:45:17,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:17,008 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:17,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:45:17,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:45:17,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:17,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:17,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1533670330, now seen corresponding path program 1 times [2023-11-19 07:45:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:17,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783111808] [2023-11-19 07:45:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:17,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754076425] [2023-11-19 07:45:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:17,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:17,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:17,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:17,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:45:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:17,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:45:17,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:17,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783111808] [2023-11-19 07:45:17,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754076425] [2023-11-19 07:45:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754076425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:17,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048268014] [2023-11-19 07:45:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:17,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:17,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:17,562 INFO L87 Difference]: Start difference. First operand 70 states and 106 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:17,606 INFO L93 Difference]: Finished difference Result 137 states and 209 transitions. [2023-11-19 07:45:17,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:17,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2023-11-19 07:45:17,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:17,611 INFO L225 Difference]: With dead ends: 137 [2023-11-19 07:45:17,611 INFO L226 Difference]: Without dead ends: 70 [2023-11-19 07:45:17,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:17,614 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 17 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:17,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 285 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-19 07:45:17,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-19 07:45:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:45:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 105 transitions. [2023-11-19 07:45:17,630 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 105 transitions. Word has length 124 [2023-11-19 07:45:17,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:17,634 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 105 transitions. [2023-11-19 07:45:17,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 105 transitions. [2023-11-19 07:45:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:45:17,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:17,638 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:17,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:17,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:17,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:17,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1169432530, now seen corresponding path program 1 times [2023-11-19 07:45:17,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:17,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023667117] [2023-11-19 07:45:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:17,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:17,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:17,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128044856] [2023-11-19 07:45:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:17,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:17,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:17,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:45:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:18,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:18,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:18,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023667117] [2023-11-19 07:45:18,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:18,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128044856] [2023-11-19 07:45:18,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128044856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:18,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:18,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:45:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167565822] [2023-11-19 07:45:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:18,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:18,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:18,770 INFO L87 Difference]: Start difference. First operand 70 states and 105 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:19,038 INFO L93 Difference]: Finished difference Result 170 states and 257 transitions. [2023-11-19 07:45:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2023-11-19 07:45:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:19,041 INFO L225 Difference]: With dead ends: 170 [2023-11-19 07:45:19,042 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 07:45:19,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:19,044 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 44 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:19,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 374 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:45:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 07:45:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2023-11-19 07:45:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:45:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 130 transitions. [2023-11-19 07:45:19,059 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 130 transitions. Word has length 125 [2023-11-19 07:45:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:19,060 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 130 transitions. [2023-11-19 07:45:19,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 130 transitions. [2023-11-19 07:45:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:45:19,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:19,064 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:19,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:19,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:19,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:19,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash -519511212, now seen corresponding path program 1 times [2023-11-19 07:45:19,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:19,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647680678] [2023-11-19 07:45:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:19,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:19,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965589903] [2023-11-19 07:45:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:19,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:19,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:19,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:19,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:45:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:19,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:19,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:19,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:19,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647680678] [2023-11-19 07:45:19,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965589903] [2023-11-19 07:45:19,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965589903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:19,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:19,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:45:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150094105] [2023-11-19 07:45:19,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:19,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:19,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:19,679 INFO L87 Difference]: Start difference. First operand 86 states and 130 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:19,835 INFO L93 Difference]: Finished difference Result 186 states and 280 transitions. [2023-11-19 07:45:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:45:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2023-11-19 07:45:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:19,842 INFO L225 Difference]: With dead ends: 186 [2023-11-19 07:45:19,844 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 07:45:19,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:45:19,849 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 87 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:19,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 468 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 07:45:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2023-11-19 07:45:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 58 states have internal predecessors, (80), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:45:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 116 transitions. [2023-11-19 07:45:19,874 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 116 transitions. Word has length 125 [2023-11-19 07:45:19,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:19,880 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 116 transitions. [2023-11-19 07:45:19,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 116 transitions. [2023-11-19 07:45:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:45:19,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:19,883 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:19,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:20,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:20,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -68524209, now seen corresponding path program 1 times [2023-11-19 07:45:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:20,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872256304] [2023-11-19 07:45:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:20,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:20,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219769510] [2023-11-19 07:45:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:20,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:20,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:20,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:20,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:45:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:20,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:45:20,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:20,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:20,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872256304] [2023-11-19 07:45:20,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:20,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219769510] [2023-11-19 07:45:20,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219769510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:20,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:20,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126690286] [2023-11-19 07:45:20,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:20,475 INFO L87 Difference]: Start difference. First operand 78 states and 116 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:20,596 INFO L93 Difference]: Finished difference Result 229 states and 343 transitions. [2023-11-19 07:45:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:20,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2023-11-19 07:45:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:20,599 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:45:20,600 INFO L226 Difference]: Without dead ends: 154 [2023-11-19 07:45:20,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:20,601 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 75 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:20,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 274 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-19 07:45:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 139. [2023-11-19 07:45:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 100 states have (on average 1.35) internal successors, (135), 100 states have internal predecessors, (135), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:45:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 207 transitions. [2023-11-19 07:45:20,623 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 207 transitions. Word has length 127 [2023-11-19 07:45:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 207 transitions. [2023-11-19 07:45:20,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 207 transitions. [2023-11-19 07:45:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:45:20,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:20,627 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:20,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:20,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:20,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:20,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1604370317, now seen corresponding path program 1 times [2023-11-19 07:45:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:20,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721454403] [2023-11-19 07:45:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:20,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:20,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:20,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291909860] [2023-11-19 07:45:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:20,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:20,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:20,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:20,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:45:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:21,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:45:21,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:21,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:21,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:21,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721454403] [2023-11-19 07:45:21,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:21,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291909860] [2023-11-19 07:45:21,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291909860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:21,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:21,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:45:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431331077] [2023-11-19 07:45:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:21,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:45:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:45:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:21,278 INFO L87 Difference]: Start difference. First operand 139 states and 207 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:21,567 INFO L93 Difference]: Finished difference Result 338 states and 501 transitions. [2023-11-19 07:45:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:45:21,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2023-11-19 07:45:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:21,571 INFO L225 Difference]: With dead ends: 338 [2023-11-19 07:45:21,572 INFO L226 Difference]: Without dead ends: 259 [2023-11-19 07:45:21,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:45:21,573 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 257 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:21,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 593 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:45:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-19 07:45:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 227. [2023-11-19 07:45:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 169 states have (on average 1.3727810650887573) internal successors, (232), 169 states have internal predecessors, (232), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:45:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 340 transitions. [2023-11-19 07:45:21,610 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 340 transitions. Word has length 129 [2023-11-19 07:45:21,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:21,611 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 340 transitions. [2023-11-19 07:45:21,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 340 transitions. [2023-11-19 07:45:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:45:21,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:21,614 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:21,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:45:21,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:45:21,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:21,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2103790965, now seen corresponding path program 1 times [2023-11-19 07:45:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:21,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261246813] [2023-11-19 07:45:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:21,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:21,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:21,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801311777] [2023-11-19 07:45:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:21,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:21,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:21,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:21,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:45:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:22,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:45:22,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:22,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:22,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261246813] [2023-11-19 07:45:22,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801311777] [2023-11-19 07:45:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801311777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:22,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672640913] [2023-11-19 07:45:22,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:22,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:22,241 INFO L87 Difference]: Start difference. First operand 227 states and 340 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:22,382 INFO L93 Difference]: Finished difference Result 598 states and 892 transitions. [2023-11-19 07:45:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:22,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2023-11-19 07:45:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:22,389 INFO L225 Difference]: With dead ends: 598 [2023-11-19 07:45:22,390 INFO L226 Difference]: Without dead ends: 416 [2023-11-19 07:45:22,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:22,392 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 109 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:22,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 299 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-19 07:45:22,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 388. [2023-11-19 07:45:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 292 states have (on average 1.345890410958904) internal successors, (393), 292 states have internal predecessors, (393), 90 states have call successors, (90), 5 states have call predecessors, (90), 5 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 07:45:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 573 transitions. [2023-11-19 07:45:22,437 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 573 transitions. Word has length 129 [2023-11-19 07:45:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:22,438 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 573 transitions. [2023-11-19 07:45:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 573 transitions. [2023-11-19 07:45:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:45:22,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:22,442 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:22,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:22,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:22,664 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:22,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash -870203581, now seen corresponding path program 1 times [2023-11-19 07:45:22,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:22,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086390036] [2023-11-19 07:45:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:22,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:22,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:22,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487468753] [2023-11-19 07:45:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:22,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:22,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:22,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:22,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:45:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:22,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:45:22,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:23,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086390036] [2023-11-19 07:45:23,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487468753] [2023-11-19 07:45:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487468753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:23,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:23,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668364906] [2023-11-19 07:45:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:23,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:23,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:23,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:23,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:23,297 INFO L87 Difference]: Start difference. First operand 388 states and 573 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:23,443 INFO L93 Difference]: Finished difference Result 785 states and 1154 transitions. [2023-11-19 07:45:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:23,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2023-11-19 07:45:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:23,448 INFO L225 Difference]: With dead ends: 785 [2023-11-19 07:45:23,448 INFO L226 Difference]: Without dead ends: 442 [2023-11-19 07:45:23,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:23,450 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 67 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:23,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 274 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-19 07:45:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 396. [2023-11-19 07:45:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 300 states have (on average 1.33) internal successors, (399), 300 states have internal predecessors, (399), 90 states have call successors, (90), 5 states have call predecessors, (90), 5 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 07:45:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 579 transitions. [2023-11-19 07:45:23,491 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 579 transitions. Word has length 131 [2023-11-19 07:45:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:23,491 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 579 transitions. [2023-11-19 07:45:23,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 579 transitions. [2023-11-19 07:45:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:45:23,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:23,494 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:23,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:23,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:23,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:23,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1460695489, now seen corresponding path program 1 times [2023-11-19 07:45:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:23,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004477412] [2023-11-19 07:45:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:23,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503285459] [2023-11-19 07:45:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:23,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:23,755 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:23,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:45:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:24,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:45:24,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 191 proven. 42 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-19 07:45:24,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004477412] [2023-11-19 07:45:25,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503285459] [2023-11-19 07:45:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503285459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:25,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:25,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:45:25,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461477123] [2023-11-19 07:45:25,562 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:25,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:45:25,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:45:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:45:25,564 INFO L87 Difference]: Start difference. First operand 396 states and 579 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:45:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:26,112 INFO L93 Difference]: Finished difference Result 1181 states and 1697 transitions. [2023-11-19 07:45:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:45:26,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2023-11-19 07:45:26,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:26,119 INFO L225 Difference]: With dead ends: 1181 [2023-11-19 07:45:26,119 INFO L226 Difference]: Without dead ends: 861 [2023-11-19 07:45:26,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:45:26,122 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 126 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:26,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 513 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:45:26,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-19 07:45:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 825. [2023-11-19 07:45:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 635 states have (on average 1.330708661417323) internal successors, (845), 639 states have internal predecessors, (845), 170 states have call successors, (170), 19 states have call predecessors, (170), 19 states have return successors, (170), 166 states have call predecessors, (170), 170 states have call successors, (170) [2023-11-19 07:45:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1185 transitions. [2023-11-19 07:45:26,208 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1185 transitions. Word has length 131 [2023-11-19 07:45:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:26,208 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1185 transitions. [2023-11-19 07:45:26,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:45:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1185 transitions. [2023-11-19 07:45:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:45:26,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:26,211 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:26,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 07:45:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:26,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:26,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2138521981, now seen corresponding path program 1 times [2023-11-19 07:45:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:26,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351960794] [2023-11-19 07:45:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:26,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:26,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207289168] [2023-11-19 07:45:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:26,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:26,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:26,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:26,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:45:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:26,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:45:26,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:26,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:26,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351960794] [2023-11-19 07:45:26,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207289168] [2023-11-19 07:45:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207289168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:26,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:26,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842002877] [2023-11-19 07:45:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:26,816 INFO L87 Difference]: Start difference. First operand 825 states and 1185 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:26,924 INFO L93 Difference]: Finished difference Result 1507 states and 2185 transitions. [2023-11-19 07:45:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2023-11-19 07:45:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:26,937 INFO L225 Difference]: With dead ends: 1507 [2023-11-19 07:45:26,937 INFO L226 Difference]: Without dead ends: 1125 [2023-11-19 07:45:26,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:26,940 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 48 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:26,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 307 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:26,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2023-11-19 07:45:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 808. [2023-11-19 07:45:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 618 states have (on average 1.331715210355987) internal successors, (823), 622 states have internal predecessors, (823), 170 states have call successors, (170), 19 states have call predecessors, (170), 19 states have return successors, (170), 166 states have call predecessors, (170), 170 states have call successors, (170) [2023-11-19 07:45:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1163 transitions. [2023-11-19 07:45:27,033 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1163 transitions. Word has length 131 [2023-11-19 07:45:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:27,037 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1163 transitions. [2023-11-19 07:45:27,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1163 transitions. [2023-11-19 07:45:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:45:27,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:27,040 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:27,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:27,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:45:27,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:27,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1145328065, now seen corresponding path program 1 times [2023-11-19 07:45:27,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:27,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515295301] [2023-11-19 07:45:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:27,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388093252] [2023-11-19 07:45:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:27,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:27,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:27,282 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:27,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:45:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:27,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:45:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:27,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:45:27,808 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:45:27,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:45:27,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:28,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:28,023 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:28,026 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:45:28,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-19 07:45:28,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-19 07:45:28,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated [2023-11-19 07:45:28,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated [2023-11-19 07:45:28,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated [2023-11-19 07:45:28,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated [2023-11-19 07:45:28,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated [2023-11-19 07:45:28,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated [2023-11-19 07:45:28,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short20 could not be translated [2023-11-19 07:45:28,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated [2023-11-19 07:45:28,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:45:28 BoogieIcfgContainer [2023-11-19 07:45:28,181 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:45:28,182 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:45:28,182 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:45:28,182 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:45:28,183 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:16" (3/4) ... [2023-11-19 07:45:28,186 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:45:28,187 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:45:28,188 INFO L158 Benchmark]: Toolchain (without parser) took 13606.83ms. Allocated memory was 146.8MB in the beginning and 218.1MB in the end (delta: 71.3MB). Free memory was 112.0MB in the beginning and 167.9MB in the end (delta: -55.8MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-11-19 07:45:28,189 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 121.6MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:45:28,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.63ms. Allocated memory is still 146.8MB. Free memory was 112.0MB in the beginning and 113.2MB in the end (delta: -1.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:45:28,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.03ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 106.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:45:28,190 INFO L158 Benchmark]: Boogie Preprocessor took 74.60ms. Allocated memory is still 146.8MB. Free memory was 106.3MB in the beginning and 103.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:45:28,190 INFO L158 Benchmark]: RCFGBuilder took 793.37ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 73.4MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-19 07:45:28,191 INFO L158 Benchmark]: TraceAbstraction took 12099.50ms. Allocated memory was 146.8MB in the beginning and 218.1MB in the end (delta: 71.3MB). Free memory was 72.8MB in the beginning and 167.9MB in the end (delta: -95.1MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. [2023-11-19 07:45:28,192 INFO L158 Benchmark]: Witness Printer took 5.21ms. Allocated memory is still 218.1MB. Free memory is still 167.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:45:28,195 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64ms. Allocated memory is still 121.6MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.63ms. Allocated memory is still 146.8MB. Free memory was 112.0MB in the beginning and 113.2MB in the end (delta: -1.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.03ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 106.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.60ms. Allocated memory is still 146.8MB. Free memory was 106.3MB in the beginning and 103.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 793.37ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 73.4MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12099.50ms. Allocated memory was 146.8MB in the beginning and 218.1MB in the end (delta: 71.3MB). Free memory was 72.8MB in the beginning and 167.9MB in the end (delta: -95.1MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. * Witness Printer took 5.21ms. Allocated memory is still 218.1MB. Free memory is still 167.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short18 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 119, overapproximation of bitwiseOr at line 119, overapproximation of someBinaryArithmeticDOUBLEoperation at line 64. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = -4; [L23] unsigned char var_1_3 = 64; [L24] unsigned char var_1_4 = 0; [L25] unsigned char var_1_5 = 2; [L26] unsigned short int var_1_6 = 10; [L27] double var_1_8 = 1.875; [L28] signed long int var_1_9 = -4; [L29] double var_1_10 = 63.5; [L30] double var_1_11 = 255.375; [L31] double var_1_12 = 999999999.525; [L32] double var_1_13 = 63.75; [L33] double var_1_14 = 0.625; [L34] unsigned short int var_1_15 = 5; [L35] signed char var_1_16 = 4; [L36] signed char var_1_17 = 0; [L37] signed char var_1_18 = -2; [L38] signed char var_1_19 = 1; [L39] unsigned short int var_1_20 = 50; [L40] unsigned short int var_1_21 = 0; [L41] unsigned char last_1_var_1_3 = 64; [L42] unsigned short int last_1_var_1_6 = 10; [L43] unsigned short int last_1_var_1_15 = 5; [L44] unsigned short int last_1_var_1_20 = 50; [L45] unsigned short int last_1_var_1_21 = 0; VAL [isInitial=0, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=0, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L123] isInitial = 1 [L124] FCALL initially() [L125] COND TRUE 1 [L126] CALL updateLastVariables() [L112] last_1_var_1_3 = var_1_3 [L113] last_1_var_1_6 = var_1_6 [L114] last_1_var_1_15 = var_1_15 [L115] last_1_var_1_20 = var_1_20 [L116] last_1_var_1_21 = var_1_21 VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=0, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L126] RET updateLastVariables() [L127] CALL updateVariables() [L81] var_1_4 = __VERIFIER_nondet_uchar() [L82] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L82] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L83] CALL assume_abort_if_not(var_1_4 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L83] RET assume_abort_if_not(var_1_4 <= 254) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=2, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L84] var_1_5 = __VERIFIER_nondet_uchar() [L85] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L85] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L86] CALL assume_abort_if_not(var_1_5 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L86] RET assume_abort_if_not(var_1_5 <= 254) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=-4] [L87] var_1_9 = __VERIFIER_nondet_long() [L88] CALL assume_abort_if_not(var_1_9 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L88] RET assume_abort_if_not(var_1_9 >= -2147483648) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L89] CALL assume_abort_if_not(var_1_9 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L89] RET assume_abort_if_not(var_1_9 <= 2147483647) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L90] CALL assume_abort_if_not(var_1_9 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L90] RET assume_abort_if_not(var_1_9 != 0) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=127/2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L91] var_1_10 = __VERIFIER_nondet_double() [L92] CALL assume_abort_if_not((var_1_10 >= 0.0F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L92] RET assume_abort_if_not((var_1_10 >= 0.0F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=2043/8, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L93] var_1_11 = __VERIFIER_nondet_double() [L94] CALL assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L94] RET assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=39999999981/40, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L95] var_1_12 = __VERIFIER_nondet_double() [L96] CALL assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L96] RET assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=255/4, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L97] var_1_13 = __VERIFIER_nondet_double() [L98] CALL assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 4611686.018427382800e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L98] RET assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 4611686.018427382800e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=5/8, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L99] var_1_14 = __VERIFIER_nondet_double() [L100] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L100] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=0, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L101] var_1_17 = __VERIFIER_nondet_char() [L102] CALL assume_abort_if_not(var_1_17 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L102] RET assume_abort_if_not(var_1_17 >= -63) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L103] CALL assume_abort_if_not(var_1_17 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L103] RET assume_abort_if_not(var_1_17 <= 63) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=-2, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L104] var_1_18 = __VERIFIER_nondet_char() [L105] CALL assume_abort_if_not(var_1_18 >= -31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L105] RET assume_abort_if_not(var_1_18 >= -31) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L106] CALL assume_abort_if_not(var_1_18 <= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L106] RET assume_abort_if_not(var_1_18 <= 32) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=1, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L107] var_1_19 = __VERIFIER_nondet_char() [L108] CALL assume_abort_if_not(var_1_19 >= -31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L108] RET assume_abort_if_not(var_1_19 >= -31) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L109] CALL assume_abort_if_not(var_1_19 <= 31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L109] RET assume_abort_if_not(var_1_19 <= 31) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L127] RET updateVariables() [L128] CALL step() [L49] signed long int stepLocal_0 = last_1_var_1_21; VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L50] COND FALSE !(last_1_var_1_6 < stepLocal_0) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L53] EXPR last_1_var_1_20 ^ last_1_var_1_15 VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L53] signed long int stepLocal_2 = last_1_var_1_20 ^ last_1_var_1_15; [L54] unsigned char stepLocal_1 = var_1_5; VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L55] COND FALSE !(stepLocal_2 < -256) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L58] COND FALSE !(stepLocal_1 <= 50) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=50, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L62] var_1_20 = (((((var_1_5 + var_1_6)) > (var_1_4)) ? ((var_1_5 + var_1_6)) : (var_1_4))) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_8=15/8, var_1_9=66] [L63] COND TRUE var_1_3 < (var_1_5 % ((((32) > (var_1_9)) ? (32) : (var_1_9)))) [L64] var_1_8 = ((((((var_1_10) > (var_1_11)) ? (var_1_10) : (var_1_11))) - var_1_12) + (var_1_13 - var_1_14)) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=4, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=-4, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L70] var_1_16 = (var_1_17 + (var_1_18 + ((((var_1_19) < 0 ) ? -(var_1_19) : (var_1_19))))) [L71] var_1_1 = ((((var_1_16) < 0 ) ? -(var_1_16) : (var_1_16))) [L72] unsigned short int stepLocal_3 = var_1_6; VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, stepLocal_3=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L73] EXPR (var_1_3 * var_1_17) & (var_1_1 * var_1_18) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, stepLocal_3=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=5, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L73] COND FALSE !(stepLocal_3 == ((var_1_3 * var_1_17) & (var_1_1 * var_1_18))) [L76] COND TRUE ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))) > var_1_21 [L77] var_1_15 = ((((var_1_3) > ((var_1_5 + var_1_4))) ? (var_1_3) : ((var_1_5 + var_1_4)))) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, stepLocal_0=0, stepLocal_1=65, stepLocal_2=1, stepLocal_3=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=319, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L128] RET step() [L129] CALL, EXPR property() [L119] EXPR ((var_1_1 == ((signed long int) ((((var_1_16) < 0 ) ? -(var_1_16) : (var_1_16))))) && ((last_1_var_1_6 < last_1_var_1_21) ? (var_1_3 == ((unsigned char) ((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5))))) : 1)) && (((last_1_var_1_20 ^ last_1_var_1_15) < -256) ? (var_1_6 == ((unsigned short int) (((((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) < 0 ) ? -((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) : ((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))))))) : ((var_1_5 <= 50) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1)) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=319, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L119] EXPR last_1_var_1_20 ^ last_1_var_1_15 VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=319, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L119] EXPR ((var_1_1 == ((signed long int) ((((var_1_16) < 0 ) ? -(var_1_16) : (var_1_16))))) && ((last_1_var_1_6 < last_1_var_1_21) ? (var_1_3 == ((unsigned char) ((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5))))) : 1)) && (((last_1_var_1_20 ^ last_1_var_1_15) < -256) ? (var_1_6 == ((unsigned short int) (((((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) < 0 ) ? -((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) : ((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))))))) : ((var_1_5 <= 50) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1)) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=319, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L119] EXPR (((((((var_1_1 == ((signed long int) ((((var_1_16) < 0 ) ? -(var_1_16) : (var_1_16))))) && ((last_1_var_1_6 < last_1_var_1_21) ? (var_1_3 == ((unsigned char) ((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5))))) : 1)) && (((last_1_var_1_20 ^ last_1_var_1_15) < -256) ? (var_1_6 == ((unsigned short int) (((((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) < 0 ) ? -((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) : ((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))))))) : ((var_1_5 <= 50) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1))) && ((var_1_3 < (var_1_5 % ((((32) > (var_1_9)) ? (32) : (var_1_9))))) ? (var_1_8 == ((double) ((((((var_1_10) > (var_1_11)) ? (var_1_10) : (var_1_11))) - var_1_12) + (var_1_13 - var_1_14)))) : ((var_1_13 <= (var_1_14 + var_1_11)) ? (var_1_8 == ((double) var_1_12)) : 1))) && ((((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))) > var_1_21) ? (var_1_15 == ((unsigned short int) ((((var_1_3) > ((var_1_5 + var_1_4))) ? (var_1_3) : ((var_1_5 + var_1_4)))))) : 1)) && (var_1_16 == ((signed char) (var_1_17 + (var_1_18 + ((((var_1_19) < 0 ) ? -(var_1_19) : (var_1_19)))))))) && (var_1_20 == ((unsigned short int) (((((var_1_5 + var_1_6)) > (var_1_4)) ? ((var_1_5 + var_1_6)) : (var_1_4)))))) && ((var_1_6 == ((var_1_3 * var_1_17) & (var_1_1 * var_1_18))) ? (var_1_21 == ((unsigned short int) (var_1_4 + 128))) : 1) VAL [isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=319, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L119-L120] return (((((((var_1_1 == ((signed long int) ((((var_1_16) < 0 ) ? -(var_1_16) : (var_1_16))))) && ((last_1_var_1_6 < last_1_var_1_21) ? (var_1_3 == ((unsigned char) ((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5))))) : 1)) && (((last_1_var_1_20 ^ last_1_var_1_15) < -256) ? (var_1_6 == ((unsigned short int) (((((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) < 0 ) ? -((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))) : ((((((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) > ((last_1_var_1_20 + last_1_var_1_3))) ? (((((var_1_5) > (var_1_4)) ? (var_1_5) : (var_1_4)))) : ((last_1_var_1_20 + last_1_var_1_3)))))))) : ((var_1_5 <= 50) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1))) && ((var_1_3 < (var_1_5 % ((((32) > (var_1_9)) ? (32) : (var_1_9))))) ? (var_1_8 == ((double) ((((((var_1_10) > (var_1_11)) ? (var_1_10) : (var_1_11))) - var_1_12) + (var_1_13 - var_1_14)))) : ((var_1_13 <= (var_1_14 + var_1_11)) ? (var_1_8 == ((double) var_1_12)) : 1))) && ((((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))) > var_1_21) ? (var_1_15 == ((unsigned short int) ((((var_1_3) > ((var_1_5 + var_1_4))) ? (var_1_3) : ((var_1_5 + var_1_4)))))) : 1)) && (var_1_16 == ((signed char) (var_1_17 + (var_1_18 + ((((var_1_19) < 0 ) ? -(var_1_19) : (var_1_19)))))))) && (var_1_20 == ((unsigned short int) (((((var_1_5 + var_1_6)) > (var_1_4)) ? ((var_1_5 + var_1_6)) : (var_1_4)))))) && ((var_1_6 == ((var_1_3 * var_1_17) & (var_1_1 * var_1_18))) ? (var_1_21 == ((unsigned short int) (var_1_4 + 128))) : 1) ; [L129] RET, EXPR property() [L129] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=319, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=5, last_1_var_1_20=50, last_1_var_1_21=0, last_1_var_1_3=64, last_1_var_1_6=10, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=5, var_1_14=6, var_1_15=319, var_1_16=0, var_1_17=-63, var_1_18=32, var_1_19=31, var_1_1=0, var_1_20=254, var_1_21=0, var_1_3=64, var_1_4=254, var_1_5=65, var_1_6=10, var_1_9=66] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.9s, OverallIterations: 11, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 834 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 830 mSDsluCounter, 3493 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2402 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 731 IncrementalHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 1091 mSDtfsCounter, 731 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1317 GetRequests, 1261 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=825occurred in iteration=9, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 516 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1531 NumberOfCodeBlocks, 1531 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1266 ConstructedInterpolants, 0 QuantifiedInterpolants, 4148 SizeOfPredicates, 28 NumberOfNonLiveVariables, 3307 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 6078/6120 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:45:28,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu --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 5ad013cbadddcdab90e1c66c7d22e00582a9c9a3cc34003c3bfa5d26a4373bc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:31,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:31,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:45:31,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:31,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:31,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:31,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:31,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:31,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:31,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:31,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:31,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:31,286 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:31,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:31,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:31,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:31,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:31,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:31,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:31,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:31,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:31,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:31,293 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:45:31,294 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:45:31,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:31,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:31,296 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:31,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:31,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:31,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:31,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:31,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:31,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:31,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:31,300 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:45:31,300 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:45:31,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:31,301 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:31,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:31,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:31,302 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:45:31,302 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:31,303 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_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ad013cbadddcdab90e1c66c7d22e00582a9c9a3cc34003c3bfa5d26a4373bc2 [2023-11-19 07:45:31,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:31,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:31,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:31,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:31,747 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:31,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i [2023-11-19 07:45:35,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:35,261 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:35,262 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i [2023-11-19 07:45:35,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data/d204a4754/a4957071f5a84834904ea83675ebbe22/FLAGe30697b77 [2023-11-19 07:45:35,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/data/d204a4754/a4957071f5a84834904ea83675ebbe22 [2023-11-19 07:45:35,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:35,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:35,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:35,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:35,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:35,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68464ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35, skipping insertion in model container [2023-11-19 07:45:35,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:35,593 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_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i[913,926] [2023-11-19 07:45:35,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:35,730 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:35,760 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_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-78.i[913,926] [2023-11-19 07:45:35,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:35,842 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:35,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35 WrapperNode [2023-11-19 07:45:35,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:35,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:35,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:35,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:35,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,885 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,936 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 135 [2023-11-19 07:45:35,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:35,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:35,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:35,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:35,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:35,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:36,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:36,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:36,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:36,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:36,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:36,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:36,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:36,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (1/1) ... [2023-11-19 07:45:36,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:36,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:36,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:36,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:45:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:45:36,132 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:45:36,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:36,258 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:36,260 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:39,312 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:39,321 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:39,321 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:45:39,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:39 BoogieIcfgContainer [2023-11-19 07:45:39,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:39,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:39,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:39,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:39,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:35" (1/3) ... [2023-11-19 07:45:39,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c988fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:39, skipping insertion in model container [2023-11-19 07:45:39,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:35" (2/3) ... [2023-11-19 07:45:39,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c988fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:39, skipping insertion in model container [2023-11-19 07:45:39,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:39" (3/3) ... [2023-11-19 07:45:39,336 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-78.i [2023-11-19 07:45:39,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:39,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:45:39,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:39,427 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;@236ba31b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:39,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:45:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:45:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-19 07:45:39,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:39,449 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:39,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:39,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:39,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1002863956, now seen corresponding path program 1 times [2023-11-19 07:45:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:39,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332359573] [2023-11-19 07:45:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:39,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:39,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:39,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:45:39,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:45:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:40,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:45:40,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-19 07:45:40,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:40,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332359573] [2023-11-19 07:45:40,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332359573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:40,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:40,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846347980] [2023-11-19 07:45:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:40,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:40,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:40,295 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:45:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:40,326 INFO L93 Difference]: Finished difference Result 109 states and 182 transitions. [2023-11-19 07:45:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 118 [2023-11-19 07:45:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:40,336 INFO L225 Difference]: With dead ends: 109 [2023-11-19 07:45:40,337 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 07:45:40,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:40,344 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:40,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 07:45:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-19 07:45:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:45:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 78 transitions. [2023-11-19 07:45:40,393 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 78 transitions. Word has length 118 [2023-11-19 07:45:40,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:40,393 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 78 transitions. [2023-11-19 07:45:40,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:45:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 78 transitions. [2023-11-19 07:45:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-19 07:45:40,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:40,398 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:40,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:40,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:40,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash -550009760, now seen corresponding path program 1 times [2023-11-19 07:45:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733898937] [2023-11-19 07:45:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:40,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:40,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:45:40,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:45:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:41,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:41,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:43,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:43,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733898937] [2023-11-19 07:45:43,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733898937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:43,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:43,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738123112] [2023-11-19 07:45:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:43,361 INFO L87 Difference]: Start difference. First operand 54 states and 78 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:46,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:48,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:50,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:52,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:54,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:56,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:58,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:58,879 INFO L93 Difference]: Finished difference Result 169 states and 245 transitions. [2023-11-19 07:45:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:58,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 118 [2023-11-19 07:45:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:58,918 INFO L225 Difference]: With dead ends: 169 [2023-11-19 07:45:58,918 INFO L226 Difference]: Without dead ends: 118 [2023-11-19 07:45:58,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:45:58,922 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 76 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 37 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:58,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 262 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 62 Invalid, 6 Unknown, 0 Unchecked, 15.3s Time] [2023-11-19 07:45:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-19 07:45:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2023-11-19 07:45:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:45:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 151 transitions. [2023-11-19 07:45:58,967 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 151 transitions. Word has length 118 [2023-11-19 07:45:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:58,969 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 151 transitions. [2023-11-19 07:45:58,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:45:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 151 transitions. [2023-11-19 07:45:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-19 07:45:58,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:58,974 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:58,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:59,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:59,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:59,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash -291844322, now seen corresponding path program 1 times [2023-11-19 07:45:59,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:59,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334655704] [2023-11-19 07:45:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:59,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:59,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:59,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:45:59,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:45:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:59,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:45:59,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:45:59,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:59,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:59,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334655704] [2023-11-19 07:45:59,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334655704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:59,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:59,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:59,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009335059] [2023-11-19 07:45:59,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:59,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:59,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:59,775 INFO L87 Difference]: Start difference. First operand 103 states and 151 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:46:01,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:46:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:01,936 INFO L93 Difference]: Finished difference Result 154 states and 226 transitions. [2023-11-19 07:46:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:01,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 118 [2023-11-19 07:46:01,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:01,981 INFO L225 Difference]: With dead ends: 154 [2023-11-19 07:46:01,982 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 07:46:01,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:01,985 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 13 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:01,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 137 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 07:46:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 07:46:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-19 07:46:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.203125) internal successors, (77), 64 states have internal predecessors, (77), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:46:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2023-11-19 07:46:02,041 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 118 [2023-11-19 07:46:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:02,043 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2023-11-19 07:46:02,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:46:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2023-11-19 07:46:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-19 07:46:02,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:02,047 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:02,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:02,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:02,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:02,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:02,265 INFO L85 PathProgramCache]: Analyzing trace with hash -903940054, now seen corresponding path program 1 times [2023-11-19 07:46:02,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:02,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776735335] [2023-11-19 07:46:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:02,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:02,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:02,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:02,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfa6a17-0b0b-48b0-b6b1-7e47b75d4b70/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:46:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:04,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:46:04,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 293 proven. 33 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-19 07:46:06,505 INFO L327 TraceCheckSpWp]: Computing backward predicates...