./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:38:48,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:38:48,151 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:38:48,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:38:48,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:38:48,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:38:48,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:38:48,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:38:48,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:38:48,179 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:38:48,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:38:48,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:38:48,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:38:48,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:38:48,181 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:38:48,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:38:48,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:38:48,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:38:48,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:38:48,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:38:48,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:38:48,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:38:48,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:38:48,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:38:48,186 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:38:48,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:38:48,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:38:48,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:38:48,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:38:48,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:38:48,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:38:48,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:48,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:38:48,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:38:48,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:38:48,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:38:48,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:38:48,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:38:48,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:38:48,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:38:48,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:38:48,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:38:48,191 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_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f [2023-11-29 04:38:48,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:38:48,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:38:48,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:38:48,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:38:48,445 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:38:48,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2023-11-29 04:38:51,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:38:51,394 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:38:51,394 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2023-11-29 04:38:51,405 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/data/66634bf15/9efcdf1e94be4bb5b3d9a3a5a4143d73/FLAG89e8e2fea [2023-11-29 04:38:51,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/data/66634bf15/9efcdf1e94be4bb5b3d9a3a5a4143d73 [2023-11-29 04:38:51,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:38:51,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:38:51,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:51,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:38:51,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:38:51,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34346a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51, skipping insertion in model container [2023-11-29 04:38:51,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:38:51,598 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_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i[916,929] [2023-11-29 04:38:51,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:51,728 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:38:51,740 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_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i[916,929] [2023-11-29 04:38:51,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:51,810 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:38:51,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51 WrapperNode [2023-11-29 04:38:51,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:51,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:51,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:38:51,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:38:51,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,886 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 560 [2023-11-29 04:38:51,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:51,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:38:51,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:38:51,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:38:51,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,934 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:38:51,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:38:51,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:38:51,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:38:51,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:38:51,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (1/1) ... [2023-11-29 04:38:51,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:51,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:52,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:38:52,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:38:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:38:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:38:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:38:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:38:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:38:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:38:52,155 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:38:52,157 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:38:52,869 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:38:52,913 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:38:52,913 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:38:52,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:52 BoogieIcfgContainer [2023-11-29 04:38:52,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:38:52,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:38:52,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:38:52,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:38:52,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:38:51" (1/3) ... [2023-11-29 04:38:52,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58276d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:52, skipping insertion in model container [2023-11-29 04:38:52,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:51" (2/3) ... [2023-11-29 04:38:52,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58276d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:52, skipping insertion in model container [2023-11-29 04:38:52,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:52" (3/3) ... [2023-11-29 04:38:52,921 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2023-11-29 04:38:52,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:38:52,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:38:52,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:38:52,989 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;@3f67f947, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:38:52,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:38:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 132 states have (on average 1.628787878787879) internal successors, (215), 133 states have internal predecessors, (215), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 04:38:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 04:38:53,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:53,021 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:53,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:53,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1419024693, now seen corresponding path program 1 times [2023-11-29 04:38:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737066157] [2023-11-29 04:38:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:53,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:53,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737066157] [2023-11-29 04:38:53,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:38:53,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481852750] [2023-11-29 04:38:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:53,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:53,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:53,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:53,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:38:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:53,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:38:53,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2023-11-29 04:38:53,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:53,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481852750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:53,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:53,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:38:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824440964] [2023-11-29 04:38:53,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:53,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:38:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:38:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:38:53,796 INFO L87 Difference]: Start difference. First operand has 211 states, 132 states have (on average 1.628787878787879) internal successors, (215), 133 states have internal predecessors, (215), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 04:38:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:53,862 INFO L93 Difference]: Finished difference Result 419 states and 808 transitions. [2023-11-29 04:38:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:38:53,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 467 [2023-11-29 04:38:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:53,874 INFO L225 Difference]: With dead ends: 419 [2023-11-29 04:38:53,874 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 04:38:53,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:38:53,883 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:53,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:38:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 04:38:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-29 04:38:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 131 states have (on average 1.5954198473282444) internal successors, (209), 131 states have internal predecessors, (209), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 04:38:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 361 transitions. [2023-11-29 04:38:53,952 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 361 transitions. Word has length 467 [2023-11-29 04:38:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:53,953 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 361 transitions. [2023-11-29 04:38:53,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 04:38:53,954 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 361 transitions. [2023-11-29 04:38:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 04:38:53,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:53,976 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:53,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:38:54,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:38:54,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:54,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:54,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1307272577, now seen corresponding path program 1 times [2023-11-29 04:38:54,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:54,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229510378] [2023-11-29 04:38:54,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:54,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:54,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562299153] [2023-11-29 04:38:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:54,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:54,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:54,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:38:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:54,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:38:54,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:38:55,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:55,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:55,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229510378] [2023-11-29 04:38:55,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:55,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562299153] [2023-11-29 04:38:55,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562299153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:55,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:55,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:38:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262011784] [2023-11-29 04:38:55,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:55,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:38:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:55,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:38:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:55,500 INFO L87 Difference]: Start difference. First operand 209 states and 361 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:38:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:57,570 INFO L93 Difference]: Finished difference Result 1537 states and 2651 transitions. [2023-11-29 04:38:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:38:57,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-11-29 04:38:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:57,586 INFO L225 Difference]: With dead ends: 1537 [2023-11-29 04:38:57,586 INFO L226 Difference]: Without dead ends: 1329 [2023-11-29 04:38:57,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:38:57,590 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1881 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:57,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1994 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:38:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2023-11-29 04:38:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 770. [2023-11-29 04:38:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 485 states have (on average 1.5896907216494844) internal successors, (771), 486 states have internal predecessors, (771), 280 states have call successors, (280), 4 states have call predecessors, (280), 4 states have return successors, (280), 279 states have call predecessors, (280), 280 states have call successors, (280) [2023-11-29 04:38:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1331 transitions. [2023-11-29 04:38:57,798 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1331 transitions. Word has length 467 [2023-11-29 04:38:57,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:57,801 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1331 transitions. [2023-11-29 04:38:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:38:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1331 transitions. [2023-11-29 04:38:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 04:38:57,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:57,807 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:57,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:38:58,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:58,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 993550013, now seen corresponding path program 1 times [2023-11-29 04:38:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005627483] [2023-11-29 04:38:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:58,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:58,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447729716] [2023-11-29 04:38:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:58,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:58,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:38:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:58,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:38:58,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:38:58,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:58,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:58,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005627483] [2023-11-29 04:38:58,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:58,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447729716] [2023-11-29 04:38:58,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447729716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:58,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:58,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:38:58,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683048454] [2023-11-29 04:38:58,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:58,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:58,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:58,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:58,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:58,414 INFO L87 Difference]: Start difference. First operand 770 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:38:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:58,535 INFO L93 Difference]: Finished difference Result 2003 states and 3468 transitions. [2023-11-29 04:38:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:58,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-11-29 04:38:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:58,549 INFO L225 Difference]: With dead ends: 2003 [2023-11-29 04:38:58,550 INFO L226 Difference]: Without dead ends: 1234 [2023-11-29 04:38:58,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:58,555 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 215 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:58,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 779 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:38:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-11-29 04:38:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1228. [2023-11-29 04:38:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 819 states have (on average 1.6092796092796093) internal successors, (1318), 824 states have internal predecessors, (1318), 400 states have call successors, (400), 8 states have call predecessors, (400), 8 states have return successors, (400), 395 states have call predecessors, (400), 400 states have call successors, (400) [2023-11-29 04:38:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 2118 transitions. [2023-11-29 04:38:58,716 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 2118 transitions. Word has length 467 [2023-11-29 04:38:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:58,718 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 2118 transitions. [2023-11-29 04:38:58,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:38:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 2118 transitions. [2023-11-29 04:38:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 04:38:58,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:58,724 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:58,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:38:58,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:58,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1417196735, now seen corresponding path program 1 times [2023-11-29 04:38:58,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997652250] [2023-11-29 04:38:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:58,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:58,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386854165] [2023-11-29 04:38:58,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:58,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:58,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:38:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:59,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:38:59,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:38:59,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:59,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997652250] [2023-11-29 04:38:59,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386854165] [2023-11-29 04:38:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386854165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:59,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:59,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:38:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517655856] [2023-11-29 04:38:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:59,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:59,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:59,323 INFO L87 Difference]: Start difference. First operand 1228 states and 2118 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:38:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:59,456 INFO L93 Difference]: Finished difference Result 2489 states and 4276 transitions. [2023-11-29 04:38:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:59,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-11-29 04:38:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:59,467 INFO L225 Difference]: With dead ends: 2489 [2023-11-29 04:38:59,468 INFO L226 Difference]: Without dead ends: 1262 [2023-11-29 04:38:59,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:59,473 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 183 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:59,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 773 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:38:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-11-29 04:38:59,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1000. [2023-11-29 04:38:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 711 states have (on average 1.6357243319268635) internal successors, (1163), 712 states have internal predecessors, (1163), 280 states have call successors, (280), 8 states have call predecessors, (280), 8 states have return successors, (280), 279 states have call predecessors, (280), 280 states have call successors, (280) [2023-11-29 04:38:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1723 transitions. [2023-11-29 04:38:59,579 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1723 transitions. Word has length 467 [2023-11-29 04:38:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:59,581 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1723 transitions. [2023-11-29 04:38:59,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:38:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1723 transitions. [2023-11-29 04:38:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 04:38:59,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:59,586 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:59,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:38:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:59,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:59,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash 396128381, now seen corresponding path program 1 times [2023-11-29 04:38:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:59,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107625841] [2023-11-29 04:38:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:59,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:59,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187189982] [2023-11-29 04:38:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:59,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:59,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:59,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:39:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:00,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:39:00,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:39:00,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:00,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:00,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107625841] [2023-11-29 04:39:00,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:00,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187189982] [2023-11-29 04:39:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187189982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:00,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:00,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:39:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244032994] [2023-11-29 04:39:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:39:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:39:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:39:00,196 INFO L87 Difference]: Start difference. First operand 1000 states and 1723 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:00,343 INFO L93 Difference]: Finished difference Result 2490 states and 4231 transitions. [2023-11-29 04:39:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:39:00,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-11-29 04:39:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:00,357 INFO L225 Difference]: With dead ends: 2490 [2023-11-29 04:39:00,357 INFO L226 Difference]: Without dead ends: 1491 [2023-11-29 04:39:00,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:39:00,362 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 188 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:00,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 707 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:39:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2023-11-29 04:39:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1486. [2023-11-29 04:39:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 969 states have (on average 1.5448916408668731) internal successors, (1497), 974 states have internal predecessors, (1497), 500 states have call successors, (500), 16 states have call predecessors, (500), 16 states have return successors, (500), 495 states have call predecessors, (500), 500 states have call successors, (500) [2023-11-29 04:39:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2497 transitions. [2023-11-29 04:39:00,567 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2497 transitions. Word has length 467 [2023-11-29 04:39:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:00,569 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2497 transitions. [2023-11-29 04:39:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2497 transitions. [2023-11-29 04:39:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 04:39:00,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:00,574 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:00,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:39:00,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:00,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:00,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash -614988869, now seen corresponding path program 1 times [2023-11-29 04:39:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153910781] [2023-11-29 04:39:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:00,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:00,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856759639] [2023-11-29 04:39:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:00,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:00,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:00,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:00,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:39:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:01,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:01,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4443 proven. 57 refuted. 0 times theorem prover too weak. 6900 trivial. 0 not checked. [2023-11-29 04:39:01,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 168 proven. 57 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:39:01,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:01,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153910781] [2023-11-29 04:39:01,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856759639] [2023-11-29 04:39:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856759639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:01,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:39:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857419286] [2023-11-29 04:39:01,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:01,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:39:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:39:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:39:01,650 INFO L87 Difference]: Start difference. First operand 1486 states and 2497 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-11-29 04:39:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:02,477 INFO L93 Difference]: Finished difference Result 2613 states and 4398 transitions. [2023-11-29 04:39:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:39:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 467 [2023-11-29 04:39:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:02,488 INFO L225 Difference]: With dead ends: 2613 [2023-11-29 04:39:02,488 INFO L226 Difference]: Without dead ends: 1128 [2023-11-29 04:39:02,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 926 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:39:02,494 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 223 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:02,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 939 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:39:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2023-11-29 04:39:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1107. [2023-11-29 04:39:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 757 states have (on average 1.5759577278731836) internal successors, (1193), 759 states have internal predecessors, (1193), 336 states have call successors, (336), 13 states have call predecessors, (336), 13 states have return successors, (336), 334 states have call predecessors, (336), 336 states have call successors, (336) [2023-11-29 04:39:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1865 transitions. [2023-11-29 04:39:02,636 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1865 transitions. Word has length 467 [2023-11-29 04:39:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:02,637 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1865 transitions. [2023-11-29 04:39:02,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-11-29 04:39:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1865 transitions. [2023-11-29 04:39:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 04:39:02,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:02,657 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:02,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:39:02,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 04:39:02,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:02,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1675992059, now seen corresponding path program 1 times [2023-11-29 04:39:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879345548] [2023-11-29 04:39:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:02,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:02,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269493842] [2023-11-29 04:39:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:02,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:02,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:02,910 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:02,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:39:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:03,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:39:03,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5393 proven. 156 refuted. 0 times theorem prover too weak. 5851 trivial. 0 not checked. [2023-11-29 04:39:04,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 69 proven. 156 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:39:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879345548] [2023-11-29 04:39:04,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269493842] [2023-11-29 04:39:04,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269493842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:04,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:04,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 04:39:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315544004] [2023-11-29 04:39:04,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:04,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:04,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:04,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:39:04,723 INFO L87 Difference]: Start difference. First operand 1107 states and 1865 transitions. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 5 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 5 states have call predecessors, (144), 5 states have call successors, (144) [2023-11-29 04:39:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:05,249 INFO L93 Difference]: Finished difference Result 2158 states and 3615 transitions. [2023-11-29 04:39:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:39:05,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 5 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 5 states have call predecessors, (144), 5 states have call successors, (144) Word has length 467 [2023-11-29 04:39:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:05,259 INFO L225 Difference]: With dead ends: 2158 [2023-11-29 04:39:05,260 INFO L226 Difference]: Without dead ends: 1147 [2023-11-29 04:39:05,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:39:05,264 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 428 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:05,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 658 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:39:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-11-29 04:39:05,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1127. [2023-11-29 04:39:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 772 states have (on average 1.5595854922279793) internal successors, (1204), 774 states have internal predecessors, (1204), 336 states have call successors, (336), 18 states have call predecessors, (336), 18 states have return successors, (336), 334 states have call predecessors, (336), 336 states have call successors, (336) [2023-11-29 04:39:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1876 transitions. [2023-11-29 04:39:05,410 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1876 transitions. Word has length 467 [2023-11-29 04:39:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:05,411 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1876 transitions. [2023-11-29 04:39:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 5 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 5 states have call predecessors, (144), 5 states have call successors, (144) [2023-11-29 04:39:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1876 transitions. [2023-11-29 04:39:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-11-29 04:39:05,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:05,417 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:05,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:39:05,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 04:39:05,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:05,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1287035946, now seen corresponding path program 1 times [2023-11-29 04:39:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:05,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440351600] [2023-11-29 04:39:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:05,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486721956] [2023-11-29 04:39:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:05,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:05,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:05,665 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:05,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:39:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:05,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:05,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:39:06,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440351600] [2023-11-29 04:39:06,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486721956] [2023-11-29 04:39:06,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486721956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:06,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:06,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:39:06,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358174123] [2023-11-29 04:39:06,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:06,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:39:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:39:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:39:06,411 INFO L87 Difference]: Start difference. First operand 1127 states and 1876 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:08,237 INFO L93 Difference]: Finished difference Result 6766 states and 11259 transitions. [2023-11-29 04:39:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:39:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-11-29 04:39:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:08,269 INFO L225 Difference]: With dead ends: 6766 [2023-11-29 04:39:08,269 INFO L226 Difference]: Without dead ends: 5739 [2023-11-29 04:39:08,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:39:08,273 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1814 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:08,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1695 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 04:39:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2023-11-29 04:39:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 3227. [2023-11-29 04:39:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 2393 states have (on average 1.6172168825741746) internal successors, (3870), 2400 states have internal predecessors, (3870), 788 states have call successors, (788), 45 states have call predecessors, (788), 45 states have return successors, (788), 781 states have call predecessors, (788), 788 states have call successors, (788) [2023-11-29 04:39:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 5446 transitions. [2023-11-29 04:39:08,610 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 5446 transitions. Word has length 468 [2023-11-29 04:39:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:08,611 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 5446 transitions. [2023-11-29 04:39:08,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 5446 transitions. [2023-11-29 04:39:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-11-29 04:39:08,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:08,618 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:08,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:39:08,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 04:39:08,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:08,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1068181228, now seen corresponding path program 1 times [2023-11-29 04:39:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:08,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815009214] [2023-11-29 04:39:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:08,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:08,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376777931] [2023-11-29 04:39:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:08,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:08,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:08,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:08,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:39:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:09,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:09,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 3795 proven. 45 refuted. 0 times theorem prover too weak. 7560 trivial. 0 not checked. [2023-11-29 04:39:09,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:39:09,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:09,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815009214] [2023-11-29 04:39:09,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:09,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376777931] [2023-11-29 04:39:09,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376777931] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:09,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:09,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 04:39:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895846545] [2023-11-29 04:39:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:09,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:39:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:39:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:39:09,528 INFO L87 Difference]: Start difference. First operand 3227 states and 5446 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:09,797 INFO L93 Difference]: Finished difference Result 6386 states and 10803 transitions. [2023-11-29 04:39:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:39:09,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-11-29 04:39:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:09,821 INFO L225 Difference]: With dead ends: 6386 [2023-11-29 04:39:09,821 INFO L226 Difference]: Without dead ends: 3259 [2023-11-29 04:39:09,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:39:09,831 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:09,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 697 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:39:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2023-11-29 04:39:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 3259. [2023-11-29 04:39:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 2425 states have (on average 1.6090721649484536) internal successors, (3902), 2432 states have internal predecessors, (3902), 788 states have call successors, (788), 45 states have call predecessors, (788), 45 states have return successors, (788), 781 states have call predecessors, (788), 788 states have call successors, (788) [2023-11-29 04:39:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 5478 transitions. [2023-11-29 04:39:10,185 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 5478 transitions. Word has length 468 [2023-11-29 04:39:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:10,186 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 5478 transitions. [2023-11-29 04:39:10,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 5478 transitions. [2023-11-29 04:39:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-11-29 04:39:10,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:10,193 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:10,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:39:10,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 04:39:10,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:10,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash -927632618, now seen corresponding path program 1 times [2023-11-29 04:39:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837650389] [2023-11-29 04:39:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:10,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:10,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465980281] [2023-11-29 04:39:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:10,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:10,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:10,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:39:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:10,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:10,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 1615 proven. 15 refuted. 0 times theorem prover too weak. 9770 trivial. 0 not checked. [2023-11-29 04:39:10,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:39:11,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:11,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837650389] [2023-11-29 04:39:11,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:11,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465980281] [2023-11-29 04:39:11,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465980281] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:11,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:11,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 04:39:11,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018542940] [2023-11-29 04:39:11,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:11,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:39:11,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:11,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:39:11,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:39:11,250 INFO L87 Difference]: Start difference. First operand 3259 states and 5478 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:12,167 INFO L93 Difference]: Finished difference Result 11240 states and 18719 transitions. [2023-11-29 04:39:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:39:12,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-11-29 04:39:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:12,210 INFO L225 Difference]: With dead ends: 11240 [2023-11-29 04:39:12,210 INFO L226 Difference]: Without dead ends: 8081 [2023-11-29 04:39:12,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 926 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:39:12,219 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 498 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:12,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1253 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:39:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8081 states. [2023-11-29 04:39:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8081 to 8059. [2023-11-29 04:39:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8059 states, 5983 states have (on average 1.5781380578305197) internal successors, (9442), 6014 states have internal predecessors, (9442), 1952 states have call successors, (1952), 123 states have call predecessors, (1952), 123 states have return successors, (1952), 1921 states have call predecessors, (1952), 1952 states have call successors, (1952) [2023-11-29 04:39:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8059 states to 8059 states and 13346 transitions. [2023-11-29 04:39:12,889 INFO L78 Accepts]: Start accepts. Automaton has 8059 states and 13346 transitions. Word has length 468 [2023-11-29 04:39:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:12,890 INFO L495 AbstractCegarLoop]: Abstraction has 8059 states and 13346 transitions. [2023-11-29 04:39:12,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8059 states and 13346 transitions. [2023-11-29 04:39:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-11-29 04:39:12,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:12,903 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:12,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:39:13,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:39:13,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:13,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash -504930792, now seen corresponding path program 1 times [2023-11-29 04:39:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094129584] [2023-11-29 04:39:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:13,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:13,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:13,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953804910] [2023-11-29 04:39:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:13,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:13,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:13,155 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:13,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:39:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:13,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:39:13,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-11-29 04:39:13,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094129584] [2023-11-29 04:39:13,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953804910] [2023-11-29 04:39:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953804910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:13,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:13,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:39:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753047635] [2023-11-29 04:39:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:13,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:39:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:39:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:39:13,936 INFO L87 Difference]: Start difference. First operand 8059 states and 13346 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:14,846 INFO L93 Difference]: Finished difference Result 23977 states and 39732 transitions. [2023-11-29 04:39:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:39:14,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-11-29 04:39:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:14,895 INFO L225 Difference]: With dead ends: 23977 [2023-11-29 04:39:14,896 INFO L226 Difference]: Without dead ends: 16018 [2023-11-29 04:39:14,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:39:14,918 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 118 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:14,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 706 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:39:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16018 states. [2023-11-29 04:39:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16018 to 16016. [2023-11-29 04:39:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16016 states, 11924 states have (on average 1.5771553170077155) internal successors, (18806), 11985 states have internal predecessors, (18806), 3848 states have call successors, (3848), 243 states have call predecessors, (3848), 243 states have return successors, (3848), 3787 states have call predecessors, (3848), 3848 states have call successors, (3848) [2023-11-29 04:39:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16016 states to 16016 states and 26502 transitions. [2023-11-29 04:39:16,631 INFO L78 Accepts]: Start accepts. Automaton has 16016 states and 26502 transitions. Word has length 468 [2023-11-29 04:39:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:16,632 INFO L495 AbstractCegarLoop]: Abstraction has 16016 states and 26502 transitions. [2023-11-29 04:39:16,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-11-29 04:39:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16016 states and 26502 transitions. [2023-11-29 04:39:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-11-29 04:39:16,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:16,639 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:16,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:39:16,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:16,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:16,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash -503083750, now seen corresponding path program 1 times [2023-11-29 04:39:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:16,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591702362] [2023-11-29 04:39:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:16,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:16,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438294170] [2023-11-29 04:39:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:16,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:16,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:16,881 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:16,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:39:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:17,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:39:17,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5503 proven. 87 refuted. 0 times theorem prover too weak. 5810 trivial. 0 not checked. [2023-11-29 04:39:17,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 138 proven. 87 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:39:18,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:18,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591702362] [2023-11-29 04:39:18,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:18,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438294170] [2023-11-29 04:39:18,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438294170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:18,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:18,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2023-11-29 04:39:18,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681777645] [2023-11-29 04:39:18,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:18,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:39:18,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:39:18,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:39:18,312 INFO L87 Difference]: Start difference. First operand 16016 states and 26502 transitions. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2023-11-29 04:39:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:48,522 INFO L93 Difference]: Finished difference Result 177692 states and 279047 transitions. [2023-11-29 04:39:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-29 04:39:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) Word has length 468 [2023-11-29 04:39:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:49,190 INFO L225 Difference]: With dead ends: 177692 [2023-11-29 04:39:49,190 INFO L226 Difference]: Without dead ends: 159504 [2023-11-29 04:39:49,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 939 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4495 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2928, Invalid=9504, Unknown=0, NotChecked=0, Total=12432 [2023-11-29 04:39:49,267 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 5029 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 4856 mSolverCounterSat, 3448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 4723 SdHoareTripleChecker+Invalid, 8304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3448 IncrementalHoareTripleChecker+Valid, 4856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:49,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 4723 Invalid, 8304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3448 Valid, 4856 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-29 04:39:49,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159504 states. [2023-11-29 04:39:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159504 to 48288. [2023-11-29 04:39:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48288 states, 36574 states have (on average 1.5790999070377865) internal successors, (57754), 36807 states have internal predecessors, (57754), 10884 states have call successors, (10884), 829 states have call predecessors, (10884), 829 states have return successors, (10884), 10651 states have call predecessors, (10884), 10884 states have call successors, (10884) [2023-11-29 04:39:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48288 states to 48288 states and 79522 transitions. [2023-11-29 04:39:57,591 INFO L78 Accepts]: Start accepts. Automaton has 48288 states and 79522 transitions. Word has length 468 [2023-11-29 04:39:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:57,591 INFO L495 AbstractCegarLoop]: Abstraction has 48288 states and 79522 transitions. [2023-11-29 04:39:57,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2023-11-29 04:39:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 48288 states and 79522 transitions. [2023-11-29 04:39:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-11-29 04:39:57,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:57,604 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:57,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:39:57,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:57,805 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:57,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:57,805 INFO L85 PathProgramCache]: Analyzing trace with hash 198516124, now seen corresponding path program 1 times [2023-11-29 04:39:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:57,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147029254] [2023-11-29 04:39:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:57,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:57,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:57,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892882929] [2023-11-29 04:39:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:57,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:57,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:57,847 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:57,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:39:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:58,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:39:58,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 1615 proven. 15 refuted. 0 times theorem prover too weak. 9770 trivial. 0 not checked. [2023-11-29 04:39:58,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 210 proven. 15 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-11-29 04:39:58,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147029254] [2023-11-29 04:39:58,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892882929] [2023-11-29 04:39:58,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892882929] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:58,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:58,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 04:39:58,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168388524] [2023-11-29 04:39:58,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:58,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:58,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:58,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:39:58,612 INFO L87 Difference]: Start difference. First operand 48288 states and 79522 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-11-29 04:40:13,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:13,049 INFO L93 Difference]: Finished difference Result 154984 states and 253447 transitions. [2023-11-29 04:40:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:40:13,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 468 [2023-11-29 04:40:13,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:13,290 INFO L225 Difference]: With dead ends: 154984 [2023-11-29 04:40:13,290 INFO L226 Difference]: Without dead ends: 106804 [2023-11-29 04:40:13,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:40:13,350 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 619 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:13,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1106 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:40:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106804 states. [2023-11-29 04:40:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106804 to 87240. [2023-11-29 04:40:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87240 states, 68194 states have (on average 1.592280845822213) internal successors, (108584), 68671 states have internal predecessors, (108584), 17716 states have call successors, (17716), 1329 states have call predecessors, (17716), 1329 states have return successors, (17716), 17239 states have call predecessors, (17716), 17716 states have call successors, (17716) [2023-11-29 04:40:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87240 states to 87240 states and 144016 transitions. [2023-11-29 04:40:24,303 INFO L78 Accepts]: Start accepts. Automaton has 87240 states and 144016 transitions. Word has length 468 [2023-11-29 04:40:24,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:24,303 INFO L495 AbstractCegarLoop]: Abstraction has 87240 states and 144016 transitions. [2023-11-29 04:40:24,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-11-29 04:40:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 87240 states and 144016 transitions. [2023-11-29 04:40:24,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-11-29 04:40:24,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:24,326 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:40:24,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:40:24,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:24,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:24,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:24,527 INFO L85 PathProgramCache]: Analyzing trace with hash -219499656, now seen corresponding path program 1 times [2023-11-29 04:40:24,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:24,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187239391] [2023-11-29 04:40:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:24,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:24,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:24,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597852838] [2023-11-29 04:40:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:24,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:24,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:24,570 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:24,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc8c511-466f-4f7d-ab27-ca2ebc3fe15d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:40:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:24,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:40:24,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:58,809 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:41:31,780 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:41:47,918 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:42:12,222 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:42:32,468 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:43:20,403 WARN L854 $PredicateComparison]: unable to prove that (and (<= (+ 2 c_~var_1_65~0) 0) (let ((.cse0 (div (+ (mod c_~var_1_38~0 65536) (- 25)) 65536))) (or (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0) (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 1) .cse0) (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0) (<= 1 ~var_1_47~0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0) (exists ((~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)))))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (exists ((~var_1_47~0 Int)) (and (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0)) (<= (+ 2 (div |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0)) .cse0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)) (<= 1 ~var_1_47~0))) (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (exists ((~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0)) (<= 1 ~var_1_47~0))) (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (let ((.cse1 (* (- 1) ~var_1_47~0))) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0) (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse1) 1) .cse0) (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse1) 0) (<= (+ ~var_1_47~0 1) 0)))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (exists ((~var_1_47~0 Int)) (let ((.cse2 (* (- 1) ~var_1_47~0))) (and (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse2) 0)) (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse2) 2) .cse0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)) (<= (+ ~var_1_47~0 1) 0)))) (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0) (exists ((~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0)) (<= (+ ~var_1_47~0 1) 0))))))) (= (mod c_~var_1_39~0 65536) 0)) is different from false [2023-11-29 04:43:52,677 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:37,495 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:18,045 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:57,862 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 5 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:28,910 WARN L293 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 62 DAG size of output: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:48:09,998 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:48:59,273 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:49:05,116 WARN L854 $PredicateComparison]: unable to prove that (and (<= (+ 2 c_~var_1_65~0) 0) (let ((.cse0 (div (+ (mod c_~var_1_38~0 65536) (- 25)) 65536))) (or (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (and (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 1) .cse0) (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0) (<= 1 ~var_1_47~0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (let ((.cse1 (* (- 1) ~var_1_47~0))) (and (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse1) 1) .cse0) (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse1) 0) (<= (+ ~var_1_47~0 1) 0)))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0) (exists ((~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)))))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (exists ((~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0)) (<= 1 ~var_1_47~0))) (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (and (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0)) (<= (+ 2 (div |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0)) .cse0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)) (<= 1 ~var_1_47~0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (and (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 2) .cse0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)) (<= (+ ~var_1_47~0 1) 0))))) (= (mod c_~var_1_39~0 65536) 0)) is different from false [2023-11-29 04:49:46,188 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:50:20,759 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:50:24,843 WARN L854 $PredicateComparison]: unable to prove that (and (<= (+ 2 c_~var_1_65~0) 0) (let ((.cse0 (div (+ (mod c_~var_1_38~0 65536) (- 25)) 65536))) (or (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (and (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 1) .cse0) (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0) (<= 1 ~var_1_47~0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (and (<= (+ 2 (div |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0)) .cse0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)) (<= 1 ~var_1_47~0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (let ((.cse1 (* (- 1) ~var_1_47~0))) (and (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse1) 1) .cse0) (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| .cse1) 0) (<= (+ ~var_1_47~0 1) 0)))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0) (exists ((~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)))))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int)) (and (exists ((~var_1_47~0 Int)) (and (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 0)) (<= 1 ~var_1_47~0))) (<= (+ |v_ULTIMATE.start_step_#t~nondet5#1_26| 1) 0))) (exists ((|v_ULTIMATE.start_step_#t~nondet5#1_26| Int) (~var_1_47~0 Int)) (and (<= (+ (div |v_ULTIMATE.start_step_#t~nondet5#1_26| (* (- 1) ~var_1_47~0)) 2) .cse0) (not (= (mod |v_ULTIMATE.start_step_#t~nondet5#1_26| ~var_1_47~0) 0)) (<= (+ ~var_1_47~0 1) 0))))) (= (mod c_~var_1_39~0 65536) 0)) is different from false [2023-11-29 04:50:57,764 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:51:30,160 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:51:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5269 proven. 78 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2023-11-29 04:51:30,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:45,720 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:51:55,271 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:01,405 WARN L293 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:10,247 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:22,487 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:30,705 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:38,851 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:52:54,438 WARN L293 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:53:06,465 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:53:14,619 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)