./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-98.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_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-98.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme --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 bc1a39df1a1f90f10eb4303c02234273e4571ce0919d0ee86bacf184ad56a73f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:29,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:29,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:01:29,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:29,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:29,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:29,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:29,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:29,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:01:29,256 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:01:29,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:29,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:29,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:29,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:29,260 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:29,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:29,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:29,261 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:29,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:29,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:29,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:29,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:29,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:29,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:29,264 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:29,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:29,265 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:29,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:29,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:29,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:01:29,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:29,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:29,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:29,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:29,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:01:29,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:29,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:29,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:29,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:29,271 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:01:29,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:29,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:29,272 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_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc1a39df1a1f90f10eb4303c02234273e4571ce0919d0ee86bacf184ad56a73f [2023-11-26 12:01:29,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:29,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:29,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:29,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:29,634 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:29,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-98.i [2023-11-26 12:01:32,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:33,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:33,216 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-98.i [2023-11-26 12:01:33,239 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/data/a8e5532cd/350ebf314d5a4b48a5f7137997ef514b/FLAG504875c89 [2023-11-26 12:01:33,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/data/a8e5532cd/350ebf314d5a4b48a5f7137997ef514b [2023-11-26 12:01:33,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:33,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:33,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:33,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:33,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:33,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:33" (1/1) ... [2023-11-26 12:01:33,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4470557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:33, skipping insertion in model container [2023-11-26 12:01:33,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:33" (1/1) ... [2023-11-26 12:01:33,329 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:33,497 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_95494e84-60a9-4ecf-8d09-d45d7ffc04de/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-98.i[916,929] [2023-11-26 12:01:33,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:33,786 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:33,801 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_95494e84-60a9-4ecf-8d09-d45d7ffc04de/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-98.i[916,929] [2023-11-26 12:01:33,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:34,035 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:34,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34 WrapperNode [2023-11-26 12:01:34,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:34,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:34,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:34,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:34,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,273 INFO L138 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 818 [2023-11-26 12:01:34,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:34,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:34,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:34,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:34,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,360 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]. [2023-11-26 12:01:34,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,413 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:34,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:34,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:34,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:34,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (1/1) ... [2023-11-26 12:01:34,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:34,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:34,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:34,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:01:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:01:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:01:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:34,699 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:34,702 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:36,231 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:36,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:36,360 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:01:36,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:36 BoogieIcfgContainer [2023-11-26 12:01:36,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:36,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:36,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:36,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:36,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:33" (1/3) ... [2023-11-26 12:01:36,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5497751d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:36, skipping insertion in model container [2023-11-26 12:01:36,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:34" (2/3) ... [2023-11-26 12:01:36,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5497751d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:36, skipping insertion in model container [2023-11-26 12:01:36,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:36" (3/3) ... [2023-11-26 12:01:36,373 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-98.i [2023-11-26 12:01:36,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:36,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:01:36,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:36,486 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;@54d93ad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:36,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:01:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 220 states have (on average 1.6545454545454545) internal successors, (364), 221 states have internal predecessors, (364), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-26 12:01:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-26 12:01:36,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:36,556 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:36,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:36,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash 490062886, now seen corresponding path program 1 times [2023-11-26 12:01:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870666555] [2023-11-26 12:01:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:37,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870666555] [2023-11-26 12:01:37,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:01:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695375385] [2023-11-26 12:01:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:37,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:37,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:37,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:37,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:01:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:37,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:01:37,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:38,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695375385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:38,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799667780] [2023-11-26 12:01:38,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:38,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:01:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:38,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:01:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:38,154 INFO L87 Difference]: Start difference. First operand has 325 states, 220 states have (on average 1.6545454545454545) internal successors, (364), 221 states have internal predecessors, (364), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:38,279 INFO L93 Difference]: Finished difference Result 644 states and 1230 transitions. [2023-11-26 12:01:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:01:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 652 [2023-11-26 12:01:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:38,300 INFO L225 Difference]: With dead ends: 644 [2023-11-26 12:01:38,302 INFO L226 Difference]: Without dead ends: 320 [2023-11-26 12:01:38,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:38,316 INFO L413 NwaCegarLoop]: 548 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, 548 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 [2023-11-26 12:01:38,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 548 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-26 12:01:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-11-26 12:01:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 216 states have (on average 1.6064814814814814) internal successors, (347), 216 states have internal predecessors, (347), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-26 12:01:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 551 transitions. [2023-11-26 12:01:38,420 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 551 transitions. Word has length 652 [2023-11-26 12:01:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:38,424 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 551 transitions. [2023-11-26 12:01:38,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 551 transitions. [2023-11-26 12:01:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-11-26 12:01:38,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:38,452 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:38,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:38,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 12:01:38,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:38,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 326098586, now seen corresponding path program 1 times [2023-11-26 12:01:38,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:38,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085776977] [2023-11-26 12:01:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:38,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225527131] [2023-11-26 12:01:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:38,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:38,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:01:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:39,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:01:39,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:40,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:40,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085776977] [2023-11-26 12:01:40,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225527131] [2023-11-26 12:01:40,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225527131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:40,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:40,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:40,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619379194] [2023-11-26 12:01:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:40,453 INFO L87 Difference]: Start difference. First operand 320 states and 551 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:40,625 INFO L93 Difference]: Finished difference Result 958 states and 1651 transitions. [2023-11-26 12:01:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:40,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 654 [2023-11-26 12:01:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:40,645 INFO L225 Difference]: With dead ends: 958 [2023-11-26 12:01:40,645 INFO L226 Difference]: Without dead ends: 639 [2023-11-26 12:01:40,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:40,651 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 242 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:40,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1200 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:40,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-26 12:01:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 637. [2023-11-26 12:01:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 430 states have (on average 1.6023255813953488) internal successors, (689), 430 states have internal predecessors, (689), 204 states have call successors, (204), 2 states have call predecessors, (204), 2 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-11-26 12:01:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1097 transitions. [2023-11-26 12:01:40,855 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1097 transitions. Word has length 654 [2023-11-26 12:01:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:40,861 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 1097 transitions. [2023-11-26 12:01:40,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1097 transitions. [2023-11-26 12:01:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-11-26 12:01:40,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:40,872 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:40,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:41,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:41,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:41,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1468601052, now seen corresponding path program 1 times [2023-11-26 12:01:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716587219] [2023-11-26 12:01:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:41,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:41,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164230827] [2023-11-26 12:01:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:41,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:41,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:41,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:01:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:01:41,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:41,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:41,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716587219] [2023-11-26 12:01:41,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164230827] [2023-11-26 12:01:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164230827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:41,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:41,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987020936] [2023-11-26 12:01:41,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:41,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:41,850 INFO L87 Difference]: Start difference. First operand 637 states and 1097 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:42,002 INFO L93 Difference]: Finished difference Result 1274 states and 2195 transitions. [2023-11-26 12:01:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 654 [2023-11-26 12:01:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:42,016 INFO L225 Difference]: With dead ends: 1274 [2023-11-26 12:01:42,016 INFO L226 Difference]: Without dead ends: 955 [2023-11-26 12:01:42,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:42,023 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 543 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:42,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1602 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-11-26 12:01:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 953. [2023-11-26 12:01:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 643 states have (on average 1.6018662519440123) internal successors, (1030), 643 states have internal predecessors, (1030), 306 states have call successors, (306), 3 states have call predecessors, (306), 3 states have return successors, (306), 306 states have call predecessors, (306), 306 states have call successors, (306) [2023-11-26 12:01:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1642 transitions. [2023-11-26 12:01:42,197 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1642 transitions. Word has length 654 [2023-11-26 12:01:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:42,201 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1642 transitions. [2023-11-26 12:01:42,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1642 transitions. [2023-11-26 12:01:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-11-26 12:01:42,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:42,212 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:42,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:42,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:42,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:42,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2041402673, now seen corresponding path program 1 times [2023-11-26 12:01:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:42,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250985886] [2023-11-26 12:01:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:42,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:42,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640759303] [2023-11-26 12:01:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:42,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:42,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:42,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:42,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:01:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:43,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:01:43,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:43,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:43,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:43,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250985886] [2023-11-26 12:01:43,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:43,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640759303] [2023-11-26 12:01:43,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640759303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:43,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:43,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486396552] [2023-11-26 12:01:43,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:43,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:43,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:43,224 INFO L87 Difference]: Start difference. First operand 953 states and 1642 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:43,411 INFO L93 Difference]: Finished difference Result 2543 states and 4334 transitions. [2023-11-26 12:01:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 655 [2023-11-26 12:01:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:43,432 INFO L225 Difference]: With dead ends: 2543 [2023-11-26 12:01:43,432 INFO L226 Difference]: Without dead ends: 1591 [2023-11-26 12:01:43,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:43,443 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 333 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:43,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1085 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-11-26 12:01:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1586. [2023-11-26 12:01:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 985 states have (on average 1.5208121827411167) internal successors, (1498), 988 states have internal predecessors, (1498), 594 states have call successors, (594), 6 states have call predecessors, (594), 6 states have return successors, (594), 591 states have call predecessors, (594), 594 states have call successors, (594) [2023-11-26 12:01:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2686 transitions. [2023-11-26 12:01:43,827 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2686 transitions. Word has length 655 [2023-11-26 12:01:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:43,830 INFO L495 AbstractCegarLoop]: Abstraction has 1586 states and 2686 transitions. [2023-11-26 12:01:43,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2686 transitions. [2023-11-26 12:01:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-11-26 12:01:43,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:43,841 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:43,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:44,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:44,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:44,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1822547955, now seen corresponding path program 1 times [2023-11-26 12:01:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:44,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443197886] [2023-11-26 12:01:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:44,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:44,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:44,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048576280] [2023-11-26 12:01:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:44,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:44,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:44,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:01:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:01:44,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:44,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:44,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443197886] [2023-11-26 12:01:44,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:44,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048576280] [2023-11-26 12:01:44,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048576280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:44,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:44,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:44,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330811157] [2023-11-26 12:01:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:44,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:44,799 INFO L87 Difference]: Start difference. First operand 1586 states and 2686 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:45,046 INFO L93 Difference]: Finished difference Result 4147 states and 7030 transitions. [2023-11-26 12:01:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:45,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 655 [2023-11-26 12:01:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:45,076 INFO L225 Difference]: With dead ends: 4147 [2023-11-26 12:01:45,076 INFO L226 Difference]: Without dead ends: 2562 [2023-11-26 12:01:45,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:45,086 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 304 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:45,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1073 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2023-11-26 12:01:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2554. [2023-11-26 12:01:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 1695 states have (on average 1.5469026548672566) internal successors, (2622), 1704 states have internal predecessors, (2622), 846 states have call successors, (846), 12 states have call predecessors, (846), 12 states have return successors, (846), 837 states have call predecessors, (846), 846 states have call successors, (846) [2023-11-26 12:01:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4314 transitions. [2023-11-26 12:01:45,655 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4314 transitions. Word has length 655 [2023-11-26 12:01:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:45,657 INFO L495 AbstractCegarLoop]: Abstraction has 2554 states and 4314 transitions. [2023-11-26 12:01:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4314 transitions. [2023-11-26 12:01:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-26 12:01:45,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:45,666 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:45,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:45,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:45,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash -502319650, now seen corresponding path program 1 times [2023-11-26 12:01:45,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:45,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150693154] [2023-11-26 12:01:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:45,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:46,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:46,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644874196] [2023-11-26 12:01:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:46,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:46,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:46,043 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:46,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:01:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:01:46,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:46,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:46,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:46,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150693154] [2023-11-26 12:01:46,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:46,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644874196] [2023-11-26 12:01:46,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644874196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:46,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:46,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14564875] [2023-11-26 12:01:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:46,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:46,581 INFO L87 Difference]: Start difference. First operand 2554 states and 4314 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:46,984 INFO L93 Difference]: Finished difference Result 7660 states and 12940 transitions. [2023-11-26 12:01:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 656 [2023-11-26 12:01:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:47,028 INFO L225 Difference]: With dead ends: 7660 [2023-11-26 12:01:47,029 INFO L226 Difference]: Without dead ends: 5107 [2023-11-26 12:01:47,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:47,042 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 543 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:47,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1082 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2023-11-26 12:01:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 5105. [2023-11-26 12:01:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 3388 states have (on average 1.5330578512396693) internal successors, (5194), 3406 states have internal predecessors, (5194), 1692 states have call successors, (1692), 24 states have call predecessors, (1692), 24 states have return successors, (1692), 1674 states have call predecessors, (1692), 1692 states have call successors, (1692) [2023-11-26 12:01:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 8578 transitions. [2023-11-26 12:01:48,078 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 8578 transitions. Word has length 656 [2023-11-26 12:01:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:48,080 INFO L495 AbstractCegarLoop]: Abstraction has 5105 states and 8578 transitions. [2023-11-26 12:01:48,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 8578 transitions. [2023-11-26 12:01:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-26 12:01:48,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:48,097 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:48,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:01:48,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:48,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1086471968, now seen corresponding path program 1 times [2023-11-26 12:01:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107931853] [2023-11-26 12:01:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:48,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:48,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965237957] [2023-11-26 12:01:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:48,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:48,435 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:48,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:01:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:48,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:48,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:51,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:51,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:51,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107931853] [2023-11-26 12:01:51,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:51,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965237957] [2023-11-26 12:01:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965237957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:51,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:51,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422646776] [2023-11-26 12:01:51,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:51,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:51,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:51,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:51,624 INFO L87 Difference]: Start difference. First operand 5105 states and 8578 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:52,855 INFO L93 Difference]: Finished difference Result 17866 states and 29997 transitions. [2023-11-26 12:01:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 656 [2023-11-26 12:01:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:52,990 INFO L225 Difference]: With dead ends: 17866 [2023-11-26 12:01:52,991 INFO L226 Difference]: Without dead ends: 12762 [2023-11-26 12:01:53,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:53,018 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 763 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:53,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1418 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:01:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2023-11-26 12:01:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 10039. [2023-11-26 12:01:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10039 states, 6606 states have (on average 1.5286103542234333) internal successors, (10098), 6642 states have internal predecessors, (10098), 3384 states have call successors, (3384), 48 states have call predecessors, (3384), 48 states have return successors, (3384), 3348 states have call predecessors, (3384), 3384 states have call successors, (3384) [2023-11-26 12:01:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10039 states to 10039 states and 16866 transitions. [2023-11-26 12:01:55,313 INFO L78 Accepts]: Start accepts. Automaton has 10039 states and 16866 transitions. Word has length 656 [2023-11-26 12:01:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:55,315 INFO L495 AbstractCegarLoop]: Abstraction has 10039 states and 16866 transitions. [2023-11-26 12:01:55,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 10039 states and 16866 transitions. [2023-11-26 12:01:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-26 12:01:55,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:55,328 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:55,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:01:55,537 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:55,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash 952458462, now seen corresponding path program 1 times [2023-11-26 12:01:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454061519] [2023-11-26 12:01:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:55,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:55,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697415197] [2023-11-26 12:01:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:55,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:55,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:55,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:55,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:01:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:56,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:01:56,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-26 12:01:56,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:56,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454061519] [2023-11-26 12:01:56,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697415197] [2023-11-26 12:01:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697415197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:56,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:56,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328675832] [2023-11-26 12:01:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:56,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:56,304 INFO L87 Difference]: Start difference. First operand 10039 states and 16866 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:01:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:58,463 INFO L93 Difference]: Finished difference Result 38981 states and 65549 transitions. [2023-11-26 12:01:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 656 [2023-11-26 12:01:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:58,609 INFO L225 Difference]: With dead ends: 38981 [2023-11-26 12:01:58,609 INFO L226 Difference]: Without dead ends: 28943 [2023-11-26 12:01:58,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:58,663 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 902 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:58,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2627 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28943 states. [2023-11-26 12:02:02,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28943 to 17495. [2023-11-26 12:02:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17495 states, 11446 states have (on average 1.5070767080202692) internal successors, (17250), 11530 states have internal predecessors, (17250), 5952 states have call successors, (5952), 96 states have call predecessors, (5952), 96 states have return successors, (5952), 5868 states have call predecessors, (5952), 5952 states have call successors, (5952) [2023-11-26 12:02:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17495 states to 17495 states and 29154 transitions. [2023-11-26 12:02:02,684 INFO L78 Accepts]: Start accepts. Automaton has 17495 states and 29154 transitions. Word has length 656 [2023-11-26 12:02:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:02,685 INFO L495 AbstractCegarLoop]: Abstraction has 17495 states and 29154 transitions. [2023-11-26 12:02:02,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-26 12:02:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 17495 states and 29154 transitions. [2023-11-26 12:02:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-26 12:02:02,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:02,704 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:02,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:02,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 12:02:02,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:02:02,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash -736485280, now seen corresponding path program 1 times [2023-11-26 12:02:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:02,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021603526] [2023-11-26 12:02:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:02,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:02,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301969798] [2023-11-26 12:02:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:02,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:02,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:03,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:03,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:02:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:03,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:02:03,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9803 proven. 114 refuted. 0 times theorem prover too weak. 10687 trivial. 0 not checked. [2023-11-26 12:02:04,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 189 proven. 114 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-26 12:02:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021603526] [2023-11-26 12:02:04,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301969798] [2023-11-26 12:02:04,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301969798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:04,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:04,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 12:02:04,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928578937] [2023-11-26 12:02:04,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:04,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:02:04,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:04,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:02:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:04,640 INFO L87 Difference]: Start difference. First operand 17495 states and 29154 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-11-26 12:02:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:06,968 INFO L93 Difference]: Finished difference Result 35373 states and 58643 transitions. [2023-11-26 12:02:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:06,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 656 [2023-11-26 12:02:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:07,065 INFO L225 Difference]: With dead ends: 35373 [2023-11-26 12:02:07,065 INFO L226 Difference]: Without dead ends: 17879 [2023-11-26 12:02:07,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1314 GetRequests, 1304 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:02:07,135 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 869 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:07,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1111 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 12:02:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17879 states. [2023-11-26 12:02:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17879 to 17687. [2023-11-26 12:02:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17687 states, 11590 states have (on average 1.4924935289042278) internal successors, (17298), 11674 states have internal predecessors, (17298), 5952 states have call successors, (5952), 144 states have call predecessors, (5952), 144 states have return successors, (5952), 5868 states have call predecessors, (5952), 5952 states have call successors, (5952) [2023-11-26 12:02:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17687 states to 17687 states and 29202 transitions. [2023-11-26 12:02:10,318 INFO L78 Accepts]: Start accepts. Automaton has 17687 states and 29202 transitions. Word has length 656 [2023-11-26 12:02:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:10,320 INFO L495 AbstractCegarLoop]: Abstraction has 17687 states and 29202 transitions. [2023-11-26 12:02:10,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-11-26 12:02:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 17687 states and 29202 transitions. [2023-11-26 12:02:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-26 12:02:10,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:10,338 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:10,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:10,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 12:02:10,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:02:10,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1429914199, now seen corresponding path program 1 times [2023-11-26 12:02:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74276230] [2023-11-26 12:02:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:10,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:10,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436632519] [2023-11-26 12:02:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:10,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:10,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:10,625 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:10,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:02:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:11,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:02:11,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9591 proven. 108 refuted. 0 times theorem prover too weak. 10905 trivial. 0 not checked. [2023-11-26 12:02:11,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 195 proven. 108 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-26 12:02:12,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:12,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74276230] [2023-11-26 12:02:12,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:12,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436632519] [2023-11-26 12:02:12,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436632519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:12,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:12,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 12:02:12,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751198256] [2023-11-26 12:02:12,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:12,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:02:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:12,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:02:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:12,075 INFO L87 Difference]: Start difference. First operand 17687 states and 29202 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-11-26 12:02:13,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:13,766 INFO L93 Difference]: Finished difference Result 27989 states and 46211 transitions. [2023-11-26 12:02:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 658 [2023-11-26 12:02:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:13,805 INFO L225 Difference]: With dead ends: 27989 [2023-11-26 12:02:13,805 INFO L226 Difference]: Without dead ends: 10303 [2023-11-26 12:02:13,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1308 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:02:13,841 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 928 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:13,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1090 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 12:02:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2023-11-26 12:02:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 10207. [2023-11-26 12:02:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10207 states, 6726 states have (on average 1.5013380909901872) internal successors, (10098), 6762 states have internal predecessors, (10098), 3384 states have call successors, (3384), 96 states have call predecessors, (3384), 96 states have return successors, (3384), 3348 states have call predecessors, (3384), 3384 states have call successors, (3384) [2023-11-26 12:02:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10207 states to 10207 states and 16866 transitions. [2023-11-26 12:02:15,475 INFO L78 Accepts]: Start accepts. Automaton has 10207 states and 16866 transitions. Word has length 658 [2023-11-26 12:02:15,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:15,477 INFO L495 AbstractCegarLoop]: Abstraction has 10207 states and 16866 transitions. [2023-11-26 12:02:15,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-11-26 12:02:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10207 states and 16866 transitions. [2023-11-26 12:02:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-26 12:02:15,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:15,490 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:15,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95494e84-60a9-4ecf-8d09-d45d7ffc04de/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0