./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/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_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/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_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/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 9f2334f2a5280c6f8bd58fdc7714429a303d87a42c4cda26bddf4d9076f15b03 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:37:13,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:37:13,938 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:37:13,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:37:13,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:37:13,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:37:13,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:37:13,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:37:13,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:37:13,972 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:37:13,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:37:13,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:37:13,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:37:13,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:37:13,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:37:13,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:37:13,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:37:13,977 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:37:13,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:37:13,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:37:13,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:37:13,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:37:13,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:37:13,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:37:13,980 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:37:13,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:37:13,981 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:37:13,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:37:13,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:37:13,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:37:13,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:37:13,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:37:13,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:37:13,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:37:13,984 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:37:13,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:37:13,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:37:13,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:37:13,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:37:13,985 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:37:13,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:37:13,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:37:13,985 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_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f2334f2a5280c6f8bd58fdc7714429a303d87a42c4cda26bddf4d9076f15b03 [2023-11-29 06:37:14,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:37:14,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:37:14,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:37:14,199 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:37:14,200 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:37:14,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-45.i [2023-11-29 06:37:16,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:37:17,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:37:17,075 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-45.i [2023-11-29 06:37:17,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/data/b164b45da/4b79e8c8e971460784b4a53711cacd34/FLAG43d65201f [2023-11-29 06:37:17,096 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/data/b164b45da/4b79e8c8e971460784b4a53711cacd34 [2023-11-29 06:37:17,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:37:17,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:37:17,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:37:17,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:37:17,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:37:17,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336b8cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17, skipping insertion in model container [2023-11-29 06:37:17,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:37:17,257 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_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-45.i[919,932] [2023-11-29 06:37:17,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:37:17,340 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:37:17,349 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_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-45.i[919,932] [2023-11-29 06:37:17,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:37:17,407 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:37:17,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17 WrapperNode [2023-11-29 06:37:17,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:37:17,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:37:17,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:37:17,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:37:17,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,467 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2023-11-29 06:37:17,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:37:17,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:37:17,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:37:17,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:37:17,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,483 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,501 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 06:37:17,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:37:17,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:37:17,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:37:17,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:37:17,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (1/1) ... [2023-11-29 06:37:17,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:37:17,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:17,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:37:17,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:37:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:37:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:37:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:37:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:37:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:37:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:37:17,693 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:37:17,695 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:37:18,039 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:37:18,079 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:37:18,080 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:37:18,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:37:18 BoogieIcfgContainer [2023-11-29 06:37:18,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:37:18,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:37:18,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:37:18,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:37:18,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:37:17" (1/3) ... [2023-11-29 06:37:18,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d4fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:37:18, skipping insertion in model container [2023-11-29 06:37:18,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:17" (2/3) ... [2023-11-29 06:37:18,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d4fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:37:18, skipping insertion in model container [2023-11-29 06:37:18,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:37:18" (3/3) ... [2023-11-29 06:37:18,090 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-45.i [2023-11-29 06:37:18,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:37:18,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:37:18,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:37:18,181 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;@13836054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:37:18,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:37:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-29 06:37:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-29 06:37:18,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:18,211 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:18,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:18,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:18,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1413274429, now seen corresponding path program 1 times [2023-11-29 06:37:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420735495] [2023-11-29 06:37:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:18,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:18,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420735495] [2023-11-29 06:37:18,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:37:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259282421] [2023-11-29 06:37:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:18,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:18,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:18,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:18,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:37:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:18,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:37:18,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2023-11-29 06:37:18,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:18,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259282421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:18,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:37:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629335918] [2023-11-29 06:37:18,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:18,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:37:18,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:37:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:37:18,762 INFO L87 Difference]: Start difference. First operand has 101 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-29 06:37:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:18,810 INFO L93 Difference]: Finished difference Result 199 states and 365 transitions. [2023-11-29 06:37:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:37:18,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 251 [2023-11-29 06:37:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:18,819 INFO L225 Difference]: With dead ends: 199 [2023-11-29 06:37:18,819 INFO L226 Difference]: Without dead ends: 99 [2023-11-29 06:37:18,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 250 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 06:37:18,826 INFO L413 NwaCegarLoop]: 155 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, 155 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 06:37:18,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-29 06:37:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-29 06:37:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 56 states have internal predecessors, (76), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-29 06:37:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 158 transitions. [2023-11-29 06:37:18,876 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 158 transitions. Word has length 251 [2023-11-29 06:37:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:18,877 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 158 transitions. [2023-11-29 06:37:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-29 06:37:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 158 transitions. [2023-11-29 06:37:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-29 06:37:18,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:18,884 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:18,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:37:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:19,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash -880688781, now seen corresponding path program 1 times [2023-11-29 06:37:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441487406] [2023-11-29 06:37:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:19,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:19,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564596832] [2023-11-29 06:37:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:19,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:19,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:19,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:19,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:37:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:19,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:37:19,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-29 06:37:19,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:19,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:19,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441487406] [2023-11-29 06:37:19,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:19,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564596832] [2023-11-29 06:37:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564596832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:19,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:19,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007832421] [2023-11-29 06:37:19,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:19,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:19,464 INFO L87 Difference]: Start difference. First operand 99 states and 158 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:19,522 INFO L93 Difference]: Finished difference Result 252 states and 401 transitions. [2023-11-29 06:37:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:19,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2023-11-29 06:37:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:19,528 INFO L225 Difference]: With dead ends: 252 [2023-11-29 06:37:19,528 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 06:37:19,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 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 06:37:19,531 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 87 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:19,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 334 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 06:37:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2023-11-29 06:37:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 91 states have (on average 1.3956043956043955) internal successors, (127), 92 states have internal predecessors, (127), 57 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-29 06:37:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 241 transitions. [2023-11-29 06:37:19,563 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 241 transitions. Word has length 251 [2023-11-29 06:37:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:19,565 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 241 transitions. [2023-11-29 06:37:19,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 241 transitions. [2023-11-29 06:37:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-29 06:37:19,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:19,570 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:19,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:37:19,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:19,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:19,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash -457986955, now seen corresponding path program 1 times [2023-11-29 06:37:19,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:19,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320725490] [2023-11-29 06:37:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:19,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:19,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:19,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787400931] [2023-11-29 06:37:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:19,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:19,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:19,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:37:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:20,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:37:20,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-29 06:37:20,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320725490] [2023-11-29 06:37:20,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787400931] [2023-11-29 06:37:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787400931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:20,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:20,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760639357] [2023-11-29 06:37:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:20,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:20,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:20,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:20,080 INFO L87 Difference]: Start difference. First operand 151 states and 241 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:20,152 INFO L93 Difference]: Finished difference Result 445 states and 709 transitions. [2023-11-29 06:37:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2023-11-29 06:37:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:20,159 INFO L225 Difference]: With dead ends: 445 [2023-11-29 06:37:20,160 INFO L226 Difference]: Without dead ends: 295 [2023-11-29 06:37:20,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 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 06:37:20,162 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 147 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:20,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 306 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-29 06:37:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2023-11-29 06:37:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 174 states have (on average 1.3448275862068966) internal successors, (234), 176 states have internal predecessors, (234), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 06:37:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 462 transitions. [2023-11-29 06:37:20,240 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 462 transitions. Word has length 251 [2023-11-29 06:37:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:20,241 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 462 transitions. [2023-11-29 06:37:20,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 462 transitions. [2023-11-29 06:37:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-29 06:37:20,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:20,248 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:20,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:37:20,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:20,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:20,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:20,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1636869606, now seen corresponding path program 1 times [2023-11-29 06:37:20,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:20,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558248958] [2023-11-29 06:37:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:20,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:20,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174475768] [2023-11-29 06:37:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:20,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:20,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:20,508 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:20,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:37:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:20,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:37:20,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-29 06:37:21,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:21,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:21,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558248958] [2023-11-29 06:37:21,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:21,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174475768] [2023-11-29 06:37:21,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174475768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:21,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:21,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:37:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181754677] [2023-11-29 06:37:21,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:21,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:21,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:21,101 INFO L87 Difference]: Start difference. First operand 293 states and 462 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:21,175 INFO L93 Difference]: Finished difference Result 877 states and 1384 transitions. [2023-11-29 06:37:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:21,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2023-11-29 06:37:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:21,182 INFO L225 Difference]: With dead ends: 877 [2023-11-29 06:37:21,182 INFO L226 Difference]: Without dead ends: 585 [2023-11-29 06:37:21,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 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 06:37:21,185 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 38 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:21,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 303 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-29 06:37:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 581. [2023-11-29 06:37:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 344 states have (on average 1.3313953488372092) internal successors, (458), 348 states have internal predecessors, (458), 228 states have call successors, (228), 8 states have call predecessors, (228), 8 states have return successors, (228), 224 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-29 06:37:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 914 transitions. [2023-11-29 06:37:21,289 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 914 transitions. Word has length 252 [2023-11-29 06:37:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:21,290 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 914 transitions. [2023-11-29 06:37:21,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:21,290 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 914 transitions. [2023-11-29 06:37:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-29 06:37:21,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:21,293 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:21,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:37:21,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:21,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:21,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1637029336, now seen corresponding path program 1 times [2023-11-29 06:37:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:21,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568493808] [2023-11-29 06:37:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:21,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:21,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932620468] [2023-11-29 06:37:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:21,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:21,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:21,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:21,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:37:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:21,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:37:21,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1524 proven. 78 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2023-11-29 06:37:22,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:37:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 42 proven. 78 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2023-11-29 06:37:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568493808] [2023-11-29 06:37:22,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932620468] [2023-11-29 06:37:22,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932620468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:37:22,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:37:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 06:37:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388920370] [2023-11-29 06:37:22,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:37:22,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:37:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:37:22,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:22,357 INFO L87 Difference]: Start difference. First operand 581 states and 914 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2023-11-29 06:37:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:22,755 INFO L93 Difference]: Finished difference Result 918 states and 1421 transitions. [2023-11-29 06:37:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:37:22,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 252 [2023-11-29 06:37:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:22,760 INFO L225 Difference]: With dead ends: 918 [2023-11-29 06:37:22,760 INFO L226 Difference]: Without dead ends: 338 [2023-11-29 06:37:22,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:37:22,763 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 119 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:22,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 226 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:37:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-29 06:37:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 310. [2023-11-29 06:37:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 187 states have (on average 1.2834224598930482) internal successors, (240), 189 states have internal predecessors, (240), 114 states have call successors, (114), 8 states have call predecessors, (114), 8 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 06:37:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 468 transitions. [2023-11-29 06:37:22,820 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 468 transitions. Word has length 252 [2023-11-29 06:37:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:22,820 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 468 transitions. [2023-11-29 06:37:22,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2023-11-29 06:37:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 468 transitions. [2023-11-29 06:37:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-29 06:37:22,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:22,823 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:22,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:37:23,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:23,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:23,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash -307937232, now seen corresponding path program 1 times [2023-11-29 06:37:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882211082] [2023-11-29 06:37:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:23,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:23,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830810868] [2023-11-29 06:37:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:23,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:23,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:37:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:23,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:37:23,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-29 06:37:24,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882211082] [2023-11-29 06:37:24,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830810868] [2023-11-29 06:37:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830810868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:24,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:37:24,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557792975] [2023-11-29 06:37:24,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:24,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:37:24,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:37:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:37:24,987 INFO L87 Difference]: Start difference. First operand 310 states and 468 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:25,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:25,634 INFO L93 Difference]: Finished difference Result 749 states and 1116 transitions. [2023-11-29 06:37:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:37:25,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2023-11-29 06:37:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:25,639 INFO L225 Difference]: With dead ends: 749 [2023-11-29 06:37:25,639 INFO L226 Difference]: Without dead ends: 440 [2023-11-29 06:37:25,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:37:25,641 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 192 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:25,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 276 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:37:25,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-11-29 06:37:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 434. [2023-11-29 06:37:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 275 states have (on average 1.250909090909091) internal successors, (344), 281 states have internal predecessors, (344), 146 states have call successors, (146), 12 states have call predecessors, (146), 12 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2023-11-29 06:37:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 636 transitions. [2023-11-29 06:37:25,720 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 636 transitions. Word has length 252 [2023-11-29 06:37:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:25,721 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 636 transitions. [2023-11-29 06:37:25,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-29 06:37:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 636 transitions. [2023-11-29 06:37:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-11-29 06:37:25,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:25,724 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:25,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:37:25,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:25,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:25,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash -966979716, now seen corresponding path program 1 times [2023-11-29 06:37:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011685296] [2023-11-29 06:37:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:25,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:25,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57898642] [2023-11-29 06:37:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:25,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:25,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36b9d78-fa21-4c22-a26e-b7c66ae35aca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:37:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:26,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 06:37:26,155 INFO L285 TraceCheckSpWp]: Computing forward predicates...