./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.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_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/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_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/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_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/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 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:25,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:25,420 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:50:25,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:25,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:25,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:25,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:25,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:25,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:25,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:25,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:25,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:25,485 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:25,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:25,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:25,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:25,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:25,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:25,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:25,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:25,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:25,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:25,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:25,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:25,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:25,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:25,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:25,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:25,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:25,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:25,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:25,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:25,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:25,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:25,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:25,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:25,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:25,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:25,505 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:25,506 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_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 [2023-11-19 07:50:25,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:25,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:25,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:25,876 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:25,876 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:25,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2023-11-19 07:50:29,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:29,497 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:29,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2023-11-19 07:50:29,515 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/data/adc227c12/18c77af18ee34a15b183ee1d20811750/FLAG1b8392df5 [2023-11-19 07:50:29,529 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/data/adc227c12/18c77af18ee34a15b183ee1d20811750 [2023-11-19 07:50:29,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:29,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:29,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:29,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:29,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:29,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:29,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93e6e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29, skipping insertion in model container [2023-11-19 07:50:29,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:29,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:29,755 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_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2023-11-19 07:50:29,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:29,868 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:29,883 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_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2023-11-19 07:50:29,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:29,948 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:29,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29 WrapperNode [2023-11-19 07:50:29,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:29,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:29,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:29,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:29,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:29,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,027 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2023-11-19 07:50:30,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:30,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:30,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:30,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:30,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:30,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:30,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:30,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:30,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (1/1) ... [2023-11-19 07:50:30,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:30,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:30,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:30,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:50:30,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:50:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:30,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:30,335 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:30,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:30,899 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:30,909 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:30,909 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:50:30,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:30 BoogieIcfgContainer [2023-11-19 07:50:30,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:30,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:30,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:30,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:30,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:29" (1/3) ... [2023-11-19 07:50:30,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e63384d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:30, skipping insertion in model container [2023-11-19 07:50:30,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:29" (2/3) ... [2023-11-19 07:50:30,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e63384d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:30, skipping insertion in model container [2023-11-19 07:50:30,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:30" (3/3) ... [2023-11-19 07:50:30,941 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2023-11-19 07:50:30,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:30,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:50:31,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:31,064 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;@17ea427c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:31,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:50:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:50:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-19 07:50:31,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:31,091 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:31,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:31,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1920933079, now seen corresponding path program 1 times [2023-11-19 07:50:31,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:31,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426162557] [2023-11-19 07:50:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:31,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:31,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426162557] [2023-11-19 07:50:31,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:50:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783050509] [2023-11-19 07:50:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:31,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:31,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:31,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:50:31,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-11-19 07:50:31,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:31,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783050509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:31,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:31,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:31,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602721312] [2023-11-19 07:50:31,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:31,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:31,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:32,031 INFO L87 Difference]: Start difference. First operand has 95 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-19 07:50:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:32,073 INFO L93 Difference]: Finished difference Result 183 states and 323 transitions. [2023-11-19 07:50:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-11-19 07:50:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:32,084 INFO L225 Difference]: With dead ends: 183 [2023-11-19 07:50:32,085 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 07:50:32,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 176 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 07:50:32,094 INFO L413 NwaCegarLoop]: 144 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, 144 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 07:50:32,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:32,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 07:50:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-19 07:50:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 62 states have internal predecessors, (90), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:50:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 144 transitions. [2023-11-19 07:50:32,155 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 144 transitions. Word has length 177 [2023-11-19 07:50:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:32,156 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 144 transitions. [2023-11-19 07:50:32,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-19 07:50:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 144 transitions. [2023-11-19 07:50:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-19 07:50:32,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:32,163 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:32,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:50:32,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:50:32,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:32,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2088743317, now seen corresponding path program 1 times [2023-11-19 07:50:32,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:32,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32199268] [2023-11-19 07:50:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:32,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:32,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:32,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122395548] [2023-11-19 07:50:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:32,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:32,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:32,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:32,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:50:32,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:50:33,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:33,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32199268] [2023-11-19 07:50:33,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:33,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122395548] [2023-11-19 07:50:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122395548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146876847] [2023-11-19 07:50:33,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:33,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:33,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:33,069 INFO L87 Difference]: Start difference. First operand 91 states and 144 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:50:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:33,534 INFO L93 Difference]: Finished difference Result 268 states and 425 transitions. [2023-11-19 07:50:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-19 07:50:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:33,549 INFO L225 Difference]: With dead ends: 268 [2023-11-19 07:50:33,549 INFO L226 Difference]: Without dead ends: 180 [2023-11-19 07:50:33,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:33,556 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 147 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:33,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 520 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-19 07:50:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 93. [2023-11-19 07:50:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.4375) internal successors, (92), 64 states have internal predecessors, (92), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:50:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 146 transitions. [2023-11-19 07:50:33,608 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 146 transitions. Word has length 177 [2023-11-19 07:50:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:33,611 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 146 transitions. [2023-11-19 07:50:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:50:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 146 transitions. [2023-11-19 07:50:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 07:50:33,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:33,624 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:33,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:33,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:50:33,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:33,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash -179586754, now seen corresponding path program 1 times [2023-11-19 07:50:33,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:33,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465275327] [2023-11-19 07:50:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:33,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781999869] [2023-11-19 07:50:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:33,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:33,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:34,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:50:34,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:34,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465275327] [2023-11-19 07:50:34,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:34,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781999869] [2023-11-19 07:50:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781999869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:34,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732201855] [2023-11-19 07:50:34,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:34,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:34,823 INFO L87 Difference]: Start difference. First operand 93 states and 146 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:50:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:34,891 INFO L93 Difference]: Finished difference Result 303 states and 477 transitions. [2023-11-19 07:50:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:34,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-19 07:50:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:34,895 INFO L225 Difference]: With dead ends: 303 [2023-11-19 07:50:34,895 INFO L226 Difference]: Without dead ends: 213 [2023-11-19 07:50:34,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:34,897 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 100 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:34,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 543 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-19 07:50:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 183. [2023-11-19 07:50:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 126 states have (on average 1.4365079365079365) internal successors, (181), 126 states have internal predecessors, (181), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:50:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 289 transitions. [2023-11-19 07:50:34,939 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 289 transitions. Word has length 178 [2023-11-19 07:50:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:34,940 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 289 transitions. [2023-11-19 07:50:34,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:50:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 289 transitions. [2023-11-19 07:50:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:50:34,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:34,944 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:34,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:35,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:50:35,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:35,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:35,165 INFO L85 PathProgramCache]: Analyzing trace with hash -508807309, now seen corresponding path program 1 times [2023-11-19 07:50:35,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:35,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329316042] [2023-11-19 07:50:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:35,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:35,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:35,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358192513] [2023-11-19 07:50:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:35,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:35,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:35,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:50:35,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 591 proven. 171 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-19 07:50:43,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:50:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329316042] [2023-11-19 07:50:50,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358192513] [2023-11-19 07:50:50,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358192513] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:50,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:50,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-11-19 07:50:50,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032168858] [2023-11-19 07:50:50,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:50,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:50,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=592, Unknown=16, NotChecked=0, Total=756 [2023-11-19 07:50:50,294 INFO L87 Difference]: Start difference. First operand 183 states and 289 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:50:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:57,615 INFO L93 Difference]: Finished difference Result 496 states and 764 transitions. [2023-11-19 07:50:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:50:57,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-19 07:50:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:57,621 INFO L225 Difference]: With dead ends: 496 [2023-11-19 07:50:57,621 INFO L226 Difference]: Without dead ends: 316 [2023-11-19 07:50:57,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=222, Invalid=1009, Unknown=29, NotChecked=0, Total=1260 [2023-11-19 07:50:57,624 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 339 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 8 mSolverCounterUnsat, 73 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 73 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:57,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 691 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 248 Invalid, 73 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 07:50:57,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-19 07:50:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 225. [2023-11-19 07:50:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 161 states have (on average 1.4161490683229814) internal successors, (228), 162 states have internal predecessors, (228), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-19 07:50:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 346 transitions. [2023-11-19 07:50:57,716 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 346 transitions. Word has length 179 [2023-11-19 07:50:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:57,717 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 346 transitions. [2023-11-19 07:50:57,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:50:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 346 transitions. [2023-11-19 07:50:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:50:57,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:57,721 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:57,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:57,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:57,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:57,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1266200053, now seen corresponding path program 1 times [2023-11-19 07:50:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:57,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852018904] [2023-11-19 07:50:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:57,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:57,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:57,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975354302] [2023-11-19 07:50:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:58,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:58,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:58,006 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:58,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:58,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:50:58,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:51:01,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:01,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:01,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852018904] [2023-11-19 07:51:01,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975354302] [2023-11-19 07:51:01,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975354302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:51:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089846938] [2023-11-19 07:51:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:01,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:51:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:51:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:51:01,703 INFO L87 Difference]: Start difference. First operand 225 states and 346 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:04,346 INFO L93 Difference]: Finished difference Result 787 states and 1197 transitions. [2023-11-19 07:51:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:51:04,346 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-19 07:51:04,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:04,352 INFO L225 Difference]: With dead ends: 787 [2023-11-19 07:51:04,352 INFO L226 Difference]: Without dead ends: 573 [2023-11-19 07:51:04,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:51:04,355 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 308 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:04,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 871 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:51:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-11-19 07:51:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 445. [2023-11-19 07:51:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 323 states have (on average 1.411764705882353) internal successors, (456), 324 states have internal predecessors, (456), 113 states have call successors, (113), 8 states have call predecessors, (113), 8 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-19 07:51:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 682 transitions. [2023-11-19 07:51:04,511 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 682 transitions. Word has length 179 [2023-11-19 07:51:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:04,515 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 682 transitions. [2023-11-19 07:51:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 682 transitions. [2023-11-19 07:51:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:51:04,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:04,519 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:04,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:04,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:04,738 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:04,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash 171251061, now seen corresponding path program 1 times [2023-11-19 07:51:04,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:04,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619547739] [2023-11-19 07:51:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:04,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:04,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562531552] [2023-11-19 07:51:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:04,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:04,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:04,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:04,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:51:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:04,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:51:04,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:51:05,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:05,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619547739] [2023-11-19 07:51:05,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562531552] [2023-11-19 07:51:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562531552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:05,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:05,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:51:05,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571814307] [2023-11-19 07:51:05,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:05,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:51:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:51:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:51:05,663 INFO L87 Difference]: Start difference. First operand 445 states and 682 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:06,411 INFO L93 Difference]: Finished difference Result 1287 states and 1953 transitions. [2023-11-19 07:51:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:51:06,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-19 07:51:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:06,418 INFO L225 Difference]: With dead ends: 1287 [2023-11-19 07:51:06,418 INFO L226 Difference]: Without dead ends: 853 [2023-11-19 07:51:06,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:51:06,423 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 322 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:06,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 609 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:51:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-11-19 07:51:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 699. [2023-11-19 07:51:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 554 states have (on average 1.431407942238267) internal successors, (793), 554 states have internal predecessors, (793), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-11-19 07:51:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1063 transitions. [2023-11-19 07:51:06,578 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1063 transitions. Word has length 179 [2023-11-19 07:51:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:06,579 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1063 transitions. [2023-11-19 07:51:06,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1063 transitions. [2023-11-19 07:51:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:51:06,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:06,582 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:06,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:06,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:06,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:06,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1778940380, now seen corresponding path program 1 times [2023-11-19 07:51:06,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:06,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772184982] [2023-11-19 07:51:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:06,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:06,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987970209] [2023-11-19 07:51:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:06,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:06,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:06,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:51:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:51:07,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:51:07,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772184982] [2023-11-19 07:51:07,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987970209] [2023-11-19 07:51:07,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987970209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:07,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:51:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45519248] [2023-11-19 07:51:07,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:07,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:51:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:51:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:51:07,341 INFO L87 Difference]: Start difference. First operand 699 states and 1063 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:08,001 INFO L93 Difference]: Finished difference Result 1476 states and 2246 transitions. [2023-11-19 07:51:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:51:08,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-19 07:51:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:08,012 INFO L225 Difference]: With dead ends: 1476 [2023-11-19 07:51:08,012 INFO L226 Difference]: Without dead ends: 1210 [2023-11-19 07:51:08,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:51:08,014 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 333 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:08,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1029 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:51:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2023-11-19 07:51:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1116. [2023-11-19 07:51:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 855 states have (on average 1.4257309941520468) internal successors, (1219), 855 states have internal predecessors, (1219), 243 states have call successors, (243), 17 states have call predecessors, (243), 17 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2023-11-19 07:51:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1705 transitions. [2023-11-19 07:51:08,295 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1705 transitions. Word has length 179 [2023-11-19 07:51:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:08,295 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1705 transitions. [2023-11-19 07:51:08,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1705 transitions. [2023-11-19 07:51:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:51:08,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:08,299 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:08,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:08,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:08,506 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:08,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1519924559, now seen corresponding path program 1 times [2023-11-19 07:51:08,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:08,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572957278] [2023-11-19 07:51:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:08,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549822614] [2023-11-19 07:51:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:08,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:08,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:08,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:08,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:51:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:08,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:51:08,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-19 07:51:08,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:08,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572957278] [2023-11-19 07:51:08,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:08,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549822614] [2023-11-19 07:51:08,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549822614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:08,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:08,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038450187] [2023-11-19 07:51:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:08,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:08,965 INFO L87 Difference]: Start difference. First operand 1116 states and 1705 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:09,299 INFO L93 Difference]: Finished difference Result 1596 states and 2436 transitions. [2023-11-19 07:51:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-19 07:51:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:09,308 INFO L225 Difference]: With dead ends: 1596 [2023-11-19 07:51:09,308 INFO L226 Difference]: Without dead ends: 1074 [2023-11-19 07:51:09,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 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 07:51:09,311 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 97 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:09,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:51:09,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-11-19 07:51:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1028. [2023-11-19 07:51:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 767 states have (on average 1.4041720990873534) internal successors, (1077), 767 states have internal predecessors, (1077), 243 states have call successors, (243), 17 states have call predecessors, (243), 17 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2023-11-19 07:51:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1563 transitions. [2023-11-19 07:51:09,592 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1563 transitions. Word has length 179 [2023-11-19 07:51:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:09,592 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1563 transitions. [2023-11-19 07:51:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-19 07:51:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1563 transitions. [2023-11-19 07:51:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:51:09,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:09,596 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:09,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:09,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:09,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:09,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:09,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1833479601, now seen corresponding path program 1 times [2023-11-19 07:51:09,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:09,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713091046] [2023-11-19 07:51:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:09,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:09,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181421121] [2023-11-19 07:51:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:09,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:09,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:09,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d9e595e-0aec-4dc7-9a0d-eeb0af3826cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:51:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:10,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:51:10,036 INFO L285 TraceCheckSpWp]: Computing forward predicates...