./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.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_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/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_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/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_b13e351f-4e2b-412e-a3f8-dc5307718065/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 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:42:51,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:42:51,425 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:42:51,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:42:51,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:42:51,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:42:51,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:42:51,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:42:51,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:42:51,459 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:42:51,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:42:51,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:42:51,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:42:51,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:42:51,461 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:42:51,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:42:51,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:42:51,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:42:51,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:42:51,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:42:51,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:42:51,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:42:51,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:42:51,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:42:51,471 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:42:51,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:42:51,472 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:42:51,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:42:51,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:42:51,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:42:51,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:42:51,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:42:51,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:42:51,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:42:51,475 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:42:51,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:42:51,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:42:51,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:42:51,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:42:51,476 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:42:51,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:42:51,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:42:51,476 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_b13e351f-4e2b-412e-a3f8-dc5307718065/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee [2023-11-29 02:42:51,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:42:51,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:42:51,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:42:51,768 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:42:51,769 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:42:51,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2023-11-29 02:42:54,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:42:54,805 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:42:54,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2023-11-29 02:42:54,816 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/data/b7e144d53/4d9e9135af5a4b63b002fed35a576e3f/FLAG59711c6e9 [2023-11-29 02:42:54,829 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/data/b7e144d53/4d9e9135af5a4b63b002fed35a576e3f [2023-11-29 02:42:54,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:42:54,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:42:54,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:42:54,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:42:54,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:42:54,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:42:54" (1/1) ... [2023-11-29 02:42:54,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69115b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:54, skipping insertion in model container [2023-11-29 02:42:54,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:42:54" (1/1) ... [2023-11-29 02:42:54,875 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:42:54,993 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_b13e351f-4e2b-412e-a3f8-dc5307718065/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2023-11-29 02:42:55,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:42:55,088 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:42:55,098 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_b13e351f-4e2b-412e-a3f8-dc5307718065/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2023-11-29 02:42:55,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:42:55,160 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:42:55,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55 WrapperNode [2023-11-29 02:42:55,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:42:55,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:42:55,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:42:55,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:42:55,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,231 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2023-11-29 02:42:55,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:42:55,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:42:55,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:42:55,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:42:55,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,268 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 02:42:55,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:42:55,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:42:55,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:42:55,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:42:55,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (1/1) ... [2023-11-29 02:42:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:42:55,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:55,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:42:55,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:42:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:42:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:42:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:42:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:42:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:42:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:42:55,486 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:42:55,489 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:42:55,980 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:42:56,012 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:42:56,013 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:42:56,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:42:56 BoogieIcfgContainer [2023-11-29 02:42:56,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:42:56,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:42:56,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:42:56,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:42:56,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:42:54" (1/3) ... [2023-11-29 02:42:56,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b03af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:42:56, skipping insertion in model container [2023-11-29 02:42:56,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:55" (2/3) ... [2023-11-29 02:42:56,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b03af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:42:56, skipping insertion in model container [2023-11-29 02:42:56,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:42:56" (3/3) ... [2023-11-29 02:42:56,022 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2023-11-29 02:42:56,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:42:56,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:42:56,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:42:56,097 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;@1c6523ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:42:56,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:42:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-29 02:42:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-29 02:42:56,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:56,126 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:56,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:56,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1365754540, now seen corresponding path program 1 times [2023-11-29 02:42:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:56,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182532729] [2023-11-29 02:42:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182532729] [2023-11-29 02:42:56,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:42:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019879432] [2023-11-29 02:42:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:56,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:56,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:56,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:56,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:42:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:56,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:42:56,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-29 02:42:56,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:42:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019879432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:56,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:42:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723197538] [2023-11-29 02:42:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:56,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:42:56,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:42:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:42:56,748 INFO L87 Difference]: Start difference. First operand has 125 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-29 02:42:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:56,799 INFO L93 Difference]: Finished difference Result 247 states and 448 transitions. [2023-11-29 02:42:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:42:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 259 [2023-11-29 02:42:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:56,811 INFO L225 Difference]: With dead ends: 247 [2023-11-29 02:42:56,811 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 02:42:56,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 258 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 02:42:56,820 INFO L413 NwaCegarLoop]: 196 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, 196 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 02:42:56,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:42:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 02:42:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-29 02:42:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 states have internal predecessors, (115), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-29 02:42:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 199 transitions. [2023-11-29 02:42:56,876 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 199 transitions. Word has length 259 [2023-11-29 02:42:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:56,877 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 199 transitions. [2023-11-29 02:42:56,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-29 02:42:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 199 transitions. [2023-11-29 02:42:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-29 02:42:56,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:56,885 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:56,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:42:57,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:42:57,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:57,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1300833268, now seen corresponding path program 1 times [2023-11-29 02:42:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053959546] [2023-11-29 02:42:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:57,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:42:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441622160] [2023-11-29 02:42:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:57,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:57,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:57,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:57,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:42:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:57,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:42:57,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-29 02:42:57,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:42:57,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053959546] [2023-11-29 02:42:57,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:42:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441622160] [2023-11-29 02:42:57,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441622160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:57,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:57,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:42:57,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278377816] [2023-11-29 02:42:57,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:57,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:42:57,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:42:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:42:57,810 INFO L87 Difference]: Start difference. First operand 123 states and 199 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-29 02:42:57,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:57,891 INFO L93 Difference]: Finished difference Result 341 states and 555 transitions. [2023-11-29 02:42:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:42:57,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 259 [2023-11-29 02:42:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:57,898 INFO L225 Difference]: With dead ends: 341 [2023-11-29 02:42:57,898 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 02:42:57,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 257 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 02:42:57,902 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 42 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:57,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 377 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:42:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 02:42:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 203. [2023-11-29 02:42:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 116 states have (on average 1.3620689655172413) internal successors, (158), 116 states have internal predecessors, (158), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-29 02:42:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 326 transitions. [2023-11-29 02:42:57,947 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 326 transitions. Word has length 259 [2023-11-29 02:42:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:57,949 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 326 transitions. [2023-11-29 02:42:57,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-29 02:42:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 326 transitions. [2023-11-29 02:42:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-29 02:42:57,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:57,954 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:57,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:42:58,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:58,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:58,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1407550412, now seen corresponding path program 1 times [2023-11-29 02:42:58,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:58,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397513136] [2023-11-29 02:42:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:58,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:58,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:42:58,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898165024] [2023-11-29 02:42:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:58,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:58,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:58,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:42:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:58,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:42:58,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-29 02:42:59,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:42:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397513136] [2023-11-29 02:42:59,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:42:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898165024] [2023-11-29 02:42:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898165024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:59,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:42:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329611651] [2023-11-29 02:42:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:42:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:42:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:42:59,393 INFO L87 Difference]: Start difference. First operand 203 states and 326 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-29 02:42:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:59,472 INFO L93 Difference]: Finished difference Result 368 states and 593 transitions. [2023-11-29 02:42:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:42:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 259 [2023-11-29 02:42:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:59,477 INFO L225 Difference]: With dead ends: 368 [2023-11-29 02:42:59,477 INFO L226 Difference]: Without dead ends: 246 [2023-11-29 02:42:59,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:42:59,479 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 123 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:59,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 566 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:42:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-29 02:42:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 217. [2023-11-29 02:42:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 130 states have (on average 1.4) internal successors, (182), 130 states have internal predecessors, (182), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-29 02:42:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 350 transitions. [2023-11-29 02:42:59,517 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 350 transitions. Word has length 259 [2023-11-29 02:42:59,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:59,518 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 350 transitions. [2023-11-29 02:42:59,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-29 02:42:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 350 transitions. [2023-11-29 02:42:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:42:59,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:59,523 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:59,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:42:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:59,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:59,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash -153584993, now seen corresponding path program 1 times [2023-11-29 02:42:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:59,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138815030] [2023-11-29 02:42:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:59,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:42:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777243267] [2023-11-29 02:42:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:59,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:59,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:59,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:42:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:59,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 02:42:59,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:43:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1777 proven. 249 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2023-11-29 02:43:01,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:43:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 102 proven. 258 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-11-29 02:43:02,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:02,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138815030] [2023-11-29 02:43:02,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:43:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777243267] [2023-11-29 02:43:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777243267] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:43:02,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:43:02,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-11-29 02:43:02,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863680295] [2023-11-29 02:43:02,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:43:02,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 02:43:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 02:43:02,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 02:43:02,900 INFO L87 Difference]: Start difference. First operand 217 states and 350 transitions. Second operand has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) [2023-11-29 02:43:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:07,133 INFO L93 Difference]: Finished difference Result 598 states and 874 transitions. [2023-11-29 02:43:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 02:43:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) Word has length 260 [2023-11-29 02:43:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:07,137 INFO L225 Difference]: With dead ends: 598 [2023-11-29 02:43:07,137 INFO L226 Difference]: Without dead ends: 476 [2023-11-29 02:43:07,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2080, Invalid=6662, Unknown=0, NotChecked=0, Total=8742 [2023-11-29 02:43:07,141 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1182 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:07,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1380 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 02:43:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-29 02:43:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 332. [2023-11-29 02:43:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 228 states have (on average 1.3728070175438596) internal successors, (313), 230 states have internal predecessors, (313), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 02:43:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 493 transitions. [2023-11-29 02:43:07,190 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 493 transitions. Word has length 260 [2023-11-29 02:43:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:07,191 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 493 transitions. [2023-11-29 02:43:07,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) [2023-11-29 02:43:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 493 transitions. [2023-11-29 02:43:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:43:07,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:07,196 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:07,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:43:07,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:07,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:07,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:07,401 INFO L85 PathProgramCache]: Analyzing trace with hash -670738017, now seen corresponding path program 1 times [2023-11-29 02:43:07,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:07,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522652595] [2023-11-29 02:43:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:07,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:43:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145039640] [2023-11-29 02:43:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:07,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:43:07,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:43:07,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:43:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:07,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 02:43:07,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:43:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1631 proven. 78 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2023-11-29 02:43:13,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:43:44,549 WARN L293 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 186 DAG size of output: 186 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:45:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-29 02:45:18,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:45:18,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522652595] [2023-11-29 02:45:18,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:45:18,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145039640] [2023-11-29 02:45:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145039640] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:45:18,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:45:18,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2023-11-29 02:45:18,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438590609] [2023-11-29 02:45:18,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:45:18,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:45:18,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:45:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:45:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=655, Unknown=6, NotChecked=0, Total=870 [2023-11-29 02:45:18,280 INFO L87 Difference]: Start difference. First operand 332 states and 493 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-29 02:45:41,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:53,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:03,973 WARN L293 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 278 DAG size of output: 260 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:46:13,789 WARN L293 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 209 DAG size of output: 196 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:46:15,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:23,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:27,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:33,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:36,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:41,650 INFO L93 Difference]: Finished difference Result 1396 states and 2088 transitions. [2023-11-29 02:46:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 02:46:41,651 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 260 [2023-11-29 02:46:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:41,658 INFO L225 Difference]: With dead ends: 1396 [2023-11-29 02:46:41,658 INFO L226 Difference]: Without dead ends: 1179 [2023-11-29 02:46:41,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 104.3s TimeCoverageRelationStatistics Valid=918, Invalid=3108, Unknown=6, NotChecked=0, Total=4032 [2023-11-29 02:46:41,661 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1253 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 39 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:41,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 928 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 31.3s Time] [2023-11-29 02:46:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2023-11-29 02:46:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 374. [2023-11-29 02:46:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 270 states have (on average 1.4074074074074074) internal successors, (380), 272 states have internal predecessors, (380), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 02:46:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 560 transitions. [2023-11-29 02:46:41,709 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 560 transitions. Word has length 260 [2023-11-29 02:46:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:41,710 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 560 transitions. [2023-11-29 02:46:41,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-29 02:46:41,710 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 560 transitions. [2023-11-29 02:46:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:46:41,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:41,714 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:41,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:46:41,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:41,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:41,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1480084643, now seen corresponding path program 1 times [2023-11-29 02:46:41,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618705312] [2023-11-29 02:46:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:41,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:46:41,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649404886] [2023-11-29 02:46:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:41,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:41,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:46:41,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:46:41,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:46:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:42,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:46:42,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:46:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1113 proven. 99 refuted. 0 times theorem prover too weak. 2232 trivial. 0 not checked. [2023-11-29 02:46:42,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:46:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 24 proven. 99 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-11-29 02:46:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618705312] [2023-11-29 02:46:42,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:46:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649404886] [2023-11-29 02:46:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649404886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:46:42,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:46:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:46:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469851088] [2023-11-29 02:46:42,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:46:42,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:46:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:46:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:46:42,636 INFO L87 Difference]: Start difference. First operand 374 states and 560 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 02:46:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:42,951 INFO L93 Difference]: Finished difference Result 649 states and 967 transitions. [2023-11-29 02:46:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:46:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 260 [2023-11-29 02:46:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:42,956 INFO L225 Difference]: With dead ends: 649 [2023-11-29 02:46:42,956 INFO L226 Difference]: Without dead ends: 390 [2023-11-29 02:46:42,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 512 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:46:42,958 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 86 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:42,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 358 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:46:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-29 02:46:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 382. [2023-11-29 02:46:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 276 states have (on average 1.3768115942028984) internal successors, (380), 278 states have internal predecessors, (380), 90 states have call successors, (90), 15 states have call predecessors, (90), 15 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 02:46:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 560 transitions. [2023-11-29 02:46:43,016 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 560 transitions. Word has length 260 [2023-11-29 02:46:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:43,016 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 560 transitions. [2023-11-29 02:46:43,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 02:46:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 560 transitions. [2023-11-29 02:46:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:46:43,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:43,020 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:43,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:46:43,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:46:43,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:43,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash 547479585, now seen corresponding path program 1 times [2023-11-29 02:46:43,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:43,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335279135] [2023-11-29 02:46:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:43,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:43,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:46:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609560948] [2023-11-29 02:46:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:43,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:43,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:46:43,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:46:43,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:46:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:43,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 02:46:43,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:46:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1085 proven. 432 refuted. 0 times theorem prover too weak. 1927 trivial. 0 not checked. [2023-11-29 02:46:53,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:33,375 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (mod c_~var_1_7~0 65536)) (.cse8 (mod c_~var_1_5~0 65536)) (.cse12 (mod c_~var_1_8~0 256)) (.cse20 (* 65535 c_~var_1_5~0))) (let ((.cse0 (mod (+ .cse20 c_~var_1_4~0) 65536)) (.cse11 (mod c_~var_1_4~0 65536)) (.cse2 (= 0 .cse12)) (.cse4 (mod c_~var_1_16~0 65536)) (.cse3 (+ .cse8 c_~var_1_11~0)) (.cse1 (mod c_~var_1_14~0 65536)) (.cse13 (= (mod c_~last_1_var_1_8~0 256) 0)) (.cse6 (mod |c_ULTIMATE.start_step_~stepLocal_2~0#1| 4294967296)) (.cse23 (+ .cse9 1)) (.cse10 (mod c_~var_1_1~0 65536))) (and (or (= .cse0 .cse1) .cse2 (< .cse3 (+ .cse4 1))) (let ((.cse5 (mod c_~var_1_17~0 4294967296))) (or (< 65534 .cse5) (< .cse6 (+ .cse5 1)))) (let ((.cse7 (= (mod c_~var_1_9~0 256) 0))) (or (and (or (not .cse7) (and (<= .cse8 .cse9) (<= .cse10 .cse11))) (= 1 .cse12)) (and .cse2 (or (< .cse9 .cse8) (< .cse11 .cse10)) .cse7))) (or .cse13 (let ((.cse21 (* 65535 c_~var_1_7~0))) (let ((.cse19 (< 56892 .cse11)) (.cse14 (= .cse10 (mod (+ .cse20 .cse21 56892) 65536))) (.cse16 (+ .cse10 65536)) (.cse18 (< .cse11 56893))) (and (or .cse14 (forall ((v_z_342 Int) (v_y_342 Int)) (let ((.cse15 (+ .cse0 v_z_342)) (.cse17 (+ (* 65536 v_y_342) (* v_z_342 65535)))) (or (< v_z_342 0) (= .cse15 .cse16) (= .cse10 .cse15) (< .cse6 .cse17) (< .cse17 0) (< .cse9 .cse17) (< 65535 v_z_342)))) .cse18) (or .cse19 (= .cse10 (mod (+ .cse20 c_~var_1_4~0 .cse21) 65536))) (or .cse19 (forall ((v_z_342 Int) (v_y_342 Int)) (let ((.cse22 (+ (* 65536 v_y_342) (* v_z_342 65535)))) (or (< v_z_342 0) (< 65535 .cse22) (< .cse22 .cse23) (< .cse6 .cse22) (< 65535 v_z_342))))) (or .cse19 (forall ((v_z_342 Int) (v_y_342 Int)) (let ((.cse24 (+ (* 65536 v_y_342) (* v_z_342 65535)))) (or (< 65535 .cse24) (< (+ .cse0 v_z_342) 65536) (< .cse24 .cse23) (< .cse6 .cse24) (< 65535 v_z_342))))) (or (forall ((v_z_342 Int) (v_y_342 Int)) (let ((.cse25 (+ .cse0 v_z_342)) (.cse26 (+ (* 65536 v_y_342) (* v_z_342 65535)))) (or (< v_z_342 0) (< 65535 .cse25) (= .cse10 .cse25) (< .cse6 .cse26) (< .cse26 0) (< .cse9 .cse26)))) .cse14 .cse18) (or (let ((.cse29 (mod (+ .cse20 56892) 65536))) (and (or .cse14 (forall ((v_z_343 Int) (v_y_343 Int)) (let ((.cse27 (+ (* 65536 v_y_343) (* v_z_343 65535))) (.cse28 (+ .cse29 v_z_343))) (or (< 65535 .cse27) (< v_z_343 0) (= .cse10 .cse28) (< .cse6 .cse27) (< .cse27 0) (< 65535 .cse28))))) (forall ((v_z_343 Int)) (let ((.cse31 (+ .cse29 v_z_343))) (or (forall ((v_y_343 Int)) (let ((.cse30 (+ (* 65536 v_y_343) (* v_z_343 65535)))) (or (< .cse30 .cse23) (< 65535 .cse30) (< .cse6 .cse30)))) (< v_z_343 0) (= .cse10 .cse31) (< 65535 .cse31)))) (forall ((v_z_343 Int)) (let ((.cse33 (+ .cse29 v_z_343))) (or (< 65535 v_z_343) (forall ((v_y_343 Int)) (let ((.cse32 (+ (* 65536 v_y_343) (* v_z_343 65535)))) (or (< .cse32 .cse23) (< 65535 .cse32) (< .cse6 .cse32)))) (< v_z_343 0) (= .cse10 .cse33) (= .cse16 .cse33)))) (forall ((v_z_343 Int)) (let ((.cse35 (+ .cse29 v_z_343))) (or (< 65535 v_z_343) (forall ((v_y_343 Int)) (let ((.cse34 (+ (* 65536 v_y_343) (* v_z_343 65535)))) (or (< .cse34 .cse23) (< 65535 .cse34) (< .cse6 .cse34)))) (= .cse16 .cse35) (< .cse35 65536)))) (or .cse14 (forall ((v_z_343 Int) (v_y_343 Int)) (let ((.cse36 (+ (* 65536 v_y_343) (* v_z_343 65535))) (.cse37 (+ .cse29 v_z_343))) (or (< 65535 .cse36) (< 65535 v_z_343) (< .cse6 .cse36) (< .cse36 0) (= .cse16 .cse37) (< .cse37 65536))))) (or .cse14 (forall ((v_z_343 Int) (v_y_343 Int)) (let ((.cse38 (+ (* 65536 v_y_343) (* v_z_343 65535))) (.cse39 (+ .cse29 v_z_343))) (or (< 65535 .cse38) (< 65535 v_z_343) (< v_z_343 0) (= .cse10 .cse39) (< .cse6 .cse38) (< .cse38 0) (= .cse16 .cse39))))))) .cse18) (or .cse19 (forall ((v_z_342 Int) (v_y_342 Int)) (let ((.cse40 (+ (* 65536 v_y_342) (* v_z_342 65535)))) (or (< v_z_342 0) (< 65535 (+ .cse0 v_z_342)) (< 65535 .cse40) (< .cse40 .cse23) (< .cse6 .cse40))))) (or .cse14 (forall ((v_z_342 Int) (v_y_342 Int)) (let ((.cse41 (+ .cse0 v_z_342)) (.cse42 (+ (* 65536 v_y_342) (* v_z_342 65535)))) (or (= .cse41 .cse16) (< .cse41 65536) (< .cse6 .cse42) (< .cse42 0) (< .cse9 .cse42) (< 65535 v_z_342)))) .cse18))))) (or .cse2 (< .cse4 .cse3) (= .cse1 (mod (+ c_~var_1_4~0 (* c_~var_1_16~0 65535) c_~var_1_11~0) 65536))) (or (not .cse13) (let ((.cse44 (+ .cse8 1)) (.cse43 (= .cse10 .cse8))) (and (or (< .cse8 .cse9) (< 65534 .cse8) .cse43 (< .cse6 .cse44)) (or (< .cse9 .cse44) (< .cse6 .cse23) (< 65534 .cse9) .cse43))))))) is different from false [2023-11-29 02:48:52,238 WARN L293 SmtUtils]: Spent 24.07s on a formula simplification. DAG size of input: 845 DAG size of output: 817 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:50:18,775 WARN L293 SmtUtils]: Spent 54.28s on a formula simplification that was a NOOP. DAG size: 806 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:52:35,765 WARN L293 SmtUtils]: Spent 23.26s on a formula simplification that was a NOOP. DAG size: 810 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:53:29,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:53:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335279135] [2023-11-29 02:53:29,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:53:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609560948] [2023-11-29 02:53:29,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609560948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:53:29,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:53:29,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2023-11-29 02:53:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096572922] [2023-11-29 02:53:29,187 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:53:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 02:53:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:53:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 02:53:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=834, Unknown=6, NotChecked=62, Total=1122 [2023-11-29 02:53:29,189 INFO L87 Difference]: Start difference. First operand 382 states and 560 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 23 states have internal predecessors, (71), 5 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (42), 4 states have call predecessors, (42), 5 states have call successors, (42) [2023-11-29 02:53:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:53:32,634 INFO L93 Difference]: Finished difference Result 1055 states and 1512 transitions. [2023-11-29 02:53:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 02:53:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 23 states have internal predecessors, (71), 5 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (42), 4 states have call predecessors, (42), 5 states have call successors, (42) Word has length 260 [2023-11-29 02:53:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:53:32,640 INFO L225 Difference]: With dead ends: 1055 [2023-11-29 02:53:32,640 INFO L226 Difference]: Without dead ends: 790 [2023-11-29 02:53:32,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 150.5s TimeCoverageRelationStatistics Valid=689, Invalid=2501, Unknown=6, NotChecked=110, Total=3306 [2023-11-29 02:53:32,644 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 274 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:53:32,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1630 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:53:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-11-29 02:53:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 440. [2023-11-29 02:53:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 332 states have (on average 1.3825301204819278) internal successors, (459), 334 states have internal predecessors, (459), 90 states have call successors, (90), 17 states have call predecessors, (90), 17 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 02:53:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 639 transitions. [2023-11-29 02:53:32,721 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 639 transitions. Word has length 260 [2023-11-29 02:53:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:53:32,721 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 639 transitions. [2023-11-29 02:53:32,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 23 states have internal predecessors, (71), 5 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (42), 4 states have call predecessors, (42), 5 states have call successors, (42) [2023-11-29 02:53:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 639 transitions. [2023-11-29 02:53:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:53:32,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:32,724 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:32,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:53:32,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:53:32,925 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:32,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash 30326561, now seen corresponding path program 1 times [2023-11-29 02:53:32,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:53:32,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446244148] [2023-11-29 02:53:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:32,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:53:32,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:53:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549585353] [2023-11-29 02:53:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:32,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:53:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:53:32,950 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:53:32,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:53:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:33,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 02:53:33,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:53:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1673 proven. 75 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2023-11-29 02:53:39,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:54:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-29 02:54:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:39,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446244148] [2023-11-29 02:54:39,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:54:39,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549585353] [2023-11-29 02:54:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549585353] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:54:39,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:54:39,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [18] total 32 [2023-11-29 02:54:39,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008213222] [2023-11-29 02:54:39,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:39,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:54:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:54:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=754, Unknown=1, NotChecked=0, Total=992 [2023-11-29 02:54:39,324 INFO L87 Difference]: Start difference. First operand 440 states and 639 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-29 02:55:03,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:55:10,933 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 297 DAG size of output: 279 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:55:16,801 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 231 DAG size of output: 218 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:55:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:29,539 INFO L93 Difference]: Finished difference Result 1456 states and 2117 transitions. [2023-11-29 02:55:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 02:55:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 260 [2023-11-29 02:55:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:29,546 INFO L225 Difference]: With dead ends: 1456 [2023-11-29 02:55:29,546 INFO L226 Difference]: Without dead ends: 1193 [2023-11-29 02:55:29,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=906, Invalid=2875, Unknown=1, NotChecked=0, Total=3782 [2023-11-29 02:55:29,549 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1307 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:29,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1004 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-11-29 02:55:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-11-29 02:55:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 444. [2023-11-29 02:55:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 336 states have (on average 1.3839285714285714) internal successors, (465), 338 states have internal predecessors, (465), 90 states have call successors, (90), 17 states have call predecessors, (90), 17 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 02:55:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 645 transitions. [2023-11-29 02:55:29,610 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 645 transitions. Word has length 260 [2023-11-29 02:55:29,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:29,611 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 645 transitions. [2023-11-29 02:55:29,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-29 02:55:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 645 transitions. [2023-11-29 02:55:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:55:29,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:29,614 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:29,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:55:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:55:29,814 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:29,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1541730719, now seen corresponding path program 1 times [2023-11-29 02:55:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247805939] [2023-11-29 02:55:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:29,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:29,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:55:29,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709474332] [2023-11-29 02:55:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:29,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:55:29,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:55:29,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:55:29,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:55:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:29,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:55:29,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:55:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-29 02:55:35,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:55:35,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247805939] [2023-11-29 02:55:35,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:55:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709474332] [2023-11-29 02:55:35,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709474332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:35,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:35,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:55:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927898153] [2023-11-29 02:55:35,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:35,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:55:35,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:55:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:55:35,572 INFO L87 Difference]: Start difference. First operand 444 states and 645 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-29 02:55:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:36,558 INFO L93 Difference]: Finished difference Result 1021 states and 1471 transitions. [2023-11-29 02:55:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:36,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 260 [2023-11-29 02:55:36,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:36,562 INFO L225 Difference]: With dead ends: 1021 [2023-11-29 02:55:36,563 INFO L226 Difference]: Without dead ends: 578 [2023-11-29 02:55:36,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:36,564 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 298 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:36,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1029 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:55:36,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-11-29 02:55:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 442. [2023-11-29 02:55:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 334 states have (on average 1.3832335329341316) internal successors, (462), 336 states have internal predecessors, (462), 90 states have call successors, (90), 17 states have call predecessors, (90), 17 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 02:55:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 642 transitions. [2023-11-29 02:55:36,619 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 642 transitions. Word has length 260 [2023-11-29 02:55:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:36,620 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 642 transitions. [2023-11-29 02:55:36,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-29 02:55:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 642 transitions. [2023-11-29 02:55:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:55:36,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:36,622 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:36,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 02:55:36,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:55:36,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:36,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1741932895, now seen corresponding path program 1 times [2023-11-29 02:55:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750155491] [2023-11-29 02:55:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:36,850 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:55:36,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955697271] [2023-11-29 02:55:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:36,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:55:36,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:55:36,852 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:55:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:55:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:37,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 02:55:37,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:55:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1591 proven. 558 refuted. 0 times theorem prover too weak. 1295 trivial. 0 not checked. [2023-11-29 02:55:40,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:55:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 102 proven. 483 refuted. 0 times theorem prover too weak. 2859 trivial. 0 not checked. [2023-11-29 02:55:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750155491] [2023-11-29 02:55:45,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:55:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955697271] [2023-11-29 02:55:45,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955697271] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:55:45,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:55:45,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 47 [2023-11-29 02:55:45,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830935694] [2023-11-29 02:55:45,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:55:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 02:55:45,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 02:55:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=1749, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 02:55:45,202 INFO L87 Difference]: Start difference. First operand 442 states and 642 transitions. Second operand has 47 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 46 states have internal predecessors, (138), 12 states have call successors, (83), 7 states have call predecessors, (83), 16 states have return successors, (84), 11 states have call predecessors, (84), 12 states have call successors, (84) [2023-11-29 02:55:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:54,116 INFO L93 Difference]: Finished difference Result 1451 states and 2032 transitions. [2023-11-29 02:55:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-11-29 02:55:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 46 states have internal predecessors, (138), 12 states have call successors, (83), 7 states have call predecessors, (83), 16 states have return successors, (84), 11 states have call predecessors, (84), 12 states have call successors, (84) Word has length 260 [2023-11-29 02:55:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:54,124 INFO L225 Difference]: With dead ends: 1451 [2023-11-29 02:55:54,124 INFO L226 Difference]: Without dead ends: 1010 [2023-11-29 02:55:54,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3840 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2677, Invalid=10205, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 02:55:54,131 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 865 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:54,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1197 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 02:55:54,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-11-29 02:55:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 428. [2023-11-29 02:55:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 323 states have (on average 1.3777089783281733) internal successors, (445), 323 states have internal predecessors, (445), 84 states have call successors, (84), 20 states have call predecessors, (84), 20 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-29 02:55:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 613 transitions. [2023-11-29 02:55:54,238 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 613 transitions. Word has length 260 [2023-11-29 02:55:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:54,239 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 613 transitions. [2023-11-29 02:55:54,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 46 states have internal predecessors, (138), 12 states have call successors, (83), 7 states have call predecessors, (83), 16 states have return successors, (84), 11 states have call predecessors, (84), 12 states have call successors, (84) [2023-11-29 02:55:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 613 transitions. [2023-11-29 02:55:54,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:55:54,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:54,242 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:54,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:55:54,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:55:54,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:54,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:54,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2035881377, now seen corresponding path program 1 times [2023-11-29 02:55:54,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:54,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778105906] [2023-11-29 02:55:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:54,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:54,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:55:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487175367] [2023-11-29 02:55:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:54,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:55:54,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:55:54,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:55:54,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13e351f-4e2b-412e-a3f8-dc5307718065/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:55:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:54,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 02:55:54,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:56:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1566 proven. 498 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2023-11-29 02:56:10,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:56:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 75 proven. 285 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-11-29 02:56:54,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:54,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778105906] [2023-11-29 02:56:54,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:56:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487175367] [2023-11-29 02:56:54,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487175367] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:56:54,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:56:54,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 27] total 57 [2023-11-29 02:56:54,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147213954] [2023-11-29 02:56:54,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:56:54,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 02:56:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 02:56:54,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=2468, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 02:56:54,652 INFO L87 Difference]: Start difference. First operand 428 states and 613 transitions. Second operand has 57 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 56 states have internal predecessors, (138), 13 states have call successors, (84), 8 states have call predecessors, (84), 14 states have return successors, (84), 11 states have call predecessors, (84), 13 states have call successors, (84) [2023-11-29 02:57:36,226 WARN L293 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 149 DAG size of output: 142 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)