./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl --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 130cb710857a69d51693f7c988d1089df72445a1bc96f77f0c94bfd1e5cc2bd5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:32:59,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:32:59,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:32:59,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:32:59,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:32:59,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:32:59,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:32:59,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:32:59,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:32:59,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:32:59,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:32:59,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:32:59,401 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:32:59,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:32:59,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:32:59,404 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:32:59,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:32:59,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:32:59,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:32:59,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:32:59,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:32:59,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:32:59,407 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:32:59,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:32:59,408 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:32:59,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:32:59,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:32:59,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:32:59,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:32:59,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:32:59,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:32:59,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:32:59,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:32:59,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:32:59,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:32:59,414 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:32:59,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:32:59,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:32:59,415 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:32:59,416 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_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 130cb710857a69d51693f7c988d1089df72445a1bc96f77f0c94bfd1e5cc2bd5 [2023-11-12 02:32:59,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:32:59,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:32:59,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:32:59,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:32:59,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:32:59,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-7.i [2023-11-12 02:33:02,955 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:33:03,293 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:33:03,294 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-7.i [2023-11-12 02:33:03,311 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/data/d5f9758f8/e0888527203c478d94b9079c9bd25d5f/FLAGe171be9d8 [2023-11-12 02:33:03,326 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/data/d5f9758f8/e0888527203c478d94b9079c9bd25d5f [2023-11-12 02:33:03,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:33:03,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:33:03,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:03,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:33:03,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:33:03,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:03,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6f80e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03, skipping insertion in model container [2023-11-12 02:33:03,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:03,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:33:03,579 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_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-7.i[915,928] [2023-11-12 02:33:03,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:03,821 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:33:03,833 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_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-7.i[915,928] [2023-11-12 02:33:03,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:03,957 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:33:03,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03 WrapperNode [2023-11-12 02:33:03,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:03,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:03,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:33:03,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:33:03,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,132 INFO L138 Inliner]: procedures = 26, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 499 [2023-11-12 02:33:04,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:04,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:33:04,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:33:04,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:33:04,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:33:04,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:33:04,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:33:04,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:33:04,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (1/1) ... [2023-11-12 02:33:04,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:04,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:04,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:04,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:33:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:33:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:33:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:33:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:33:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:33:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:33:04,530 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:33:04,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:33:05,552 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:33:05,567 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:33:05,567 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:33:05,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:05 BoogieIcfgContainer [2023-11-12 02:33:05,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:33:05,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:33:05,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:33:05,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:33:05,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:33:03" (1/3) ... [2023-11-12 02:33:05,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39144960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:05, skipping insertion in model container [2023-11-12 02:33:05,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:03" (2/3) ... [2023-11-12 02:33:05,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39144960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:05, skipping insertion in model container [2023-11-12 02:33:05,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:05" (3/3) ... [2023-11-12 02:33:05,580 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-7.i [2023-11-12 02:33:05,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:33:05,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:33:05,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:33:05,697 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;@239314ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:33:05,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:33:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-12 02:33:05,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-12 02:33:05,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:05,734 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:05,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:05,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:05,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1120892131, now seen corresponding path program 1 times [2023-11-12 02:33:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:05,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635844726] [2023-11-12 02:33:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:05,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:06,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635844726] [2023-11-12 02:33:06,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:33:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569859273] [2023-11-12 02:33:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:06,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:06,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:06,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:06,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:33:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:06,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:33:06,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2023-11-12 02:33:06,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:33:06,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569859273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:06,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:06,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:33:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746690071] [2023-11-12 02:33:06,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:06,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:33:06,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:06,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:33:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:33:06,823 INFO L87 Difference]: Start difference. First operand has 198 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2023-11-12 02:33:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:06,891 INFO L93 Difference]: Finished difference Result 387 states and 702 transitions. [2023-11-12 02:33:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:33:06,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) Word has length 367 [2023-11-12 02:33:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:06,904 INFO L225 Difference]: With dead ends: 387 [2023-11-12 02:33:06,905 INFO L226 Difference]: Without dead ends: 192 [2023-11-12 02:33:06,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:33:06,915 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:06,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:33:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-12 02:33:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-11-12 02:33:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 132 states have (on average 1.4924242424242424) internal successors, (197), 132 states have internal predecessors, (197), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-12 02:33:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 313 transitions. [2023-11-12 02:33:07,012 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 313 transitions. Word has length 367 [2023-11-12 02:33:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:07,013 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 313 transitions. [2023-11-12 02:33:07,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2023-11-12 02:33:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 313 transitions. [2023-11-12 02:33:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-12 02:33:07,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:07,026 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:07,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:07,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:07,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:07,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1842615253, now seen corresponding path program 1 times [2023-11-12 02:33:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:07,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828576346] [2023-11-12 02:33:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:07,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:07,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:07,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504805239] [2023-11-12 02:33:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:07,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:07,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:07,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:07,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:33:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:07,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:33:07,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-11-12 02:33:07,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:33:07,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:07,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828576346] [2023-11-12 02:33:07,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:07,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504805239] [2023-11-12 02:33:07,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504805239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:07,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:07,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:07,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892482009] [2023-11-12 02:33:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:07,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:33:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:07,941 INFO L87 Difference]: Start difference. First operand 192 states and 313 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:08,199 INFO L93 Difference]: Finished difference Result 479 states and 781 transitions. [2023-11-12 02:33:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:08,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 367 [2023-11-12 02:33:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:08,213 INFO L225 Difference]: With dead ends: 479 [2023-11-12 02:33:08,214 INFO L226 Difference]: Without dead ends: 290 [2023-11-12 02:33:08,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:08,221 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 153 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:08,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 849 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:33:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-12 02:33:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2023-11-12 02:33:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 224 states have (on average 1.5535714285714286) internal successors, (348), 225 states have internal predecessors, (348), 60 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-12 02:33:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2023-11-12 02:33:08,302 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 367 [2023-11-12 02:33:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:08,306 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2023-11-12 02:33:08,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:08,308 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2023-11-12 02:33:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-12 02:33:08,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:08,321 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:08,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:08,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:08,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:08,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -208368745, now seen corresponding path program 1 times [2023-11-12 02:33:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132543278] [2023-11-12 02:33:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:08,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:08,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072821995] [2023-11-12 02:33:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:08,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:08,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:08,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:33:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:08,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:33:09,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-11-12 02:33:09,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:33:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132543278] [2023-11-12 02:33:09,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:09,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072821995] [2023-11-12 02:33:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072821995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:09,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935362118] [2023-11-12 02:33:09,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:09,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:33:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:09,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:09,151 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:09,605 INFO L93 Difference]: Finished difference Result 855 states and 1398 transitions. [2023-11-12 02:33:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:09,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 367 [2023-11-12 02:33:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:09,614 INFO L225 Difference]: With dead ends: 855 [2023-11-12 02:33:09,614 INFO L226 Difference]: Without dead ends: 571 [2023-11-12 02:33:09,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:09,617 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 355 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:09,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 673 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:33:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-11-12 02:33:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 313. [2023-11-12 02:33:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 250 states have (on average 1.548) internal successors, (387), 251 states have internal predecessors, (387), 60 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-12 02:33:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 507 transitions. [2023-11-12 02:33:09,665 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 507 transitions. Word has length 367 [2023-11-12 02:33:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:09,667 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 507 transitions. [2023-11-12 02:33:09,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 507 transitions. [2023-11-12 02:33:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-12 02:33:09,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:09,672 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:09,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:09,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:09,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:09,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash -342382251, now seen corresponding path program 1 times [2023-11-12 02:33:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:09,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544683488] [2023-11-12 02:33:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:09,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:10,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771898979] [2023-11-12 02:33:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:10,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:10,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:10,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:10,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:33:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:10,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:33:10,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1957 proven. 141 refuted. 0 times theorem prover too weak. 4514 trivial. 0 not checked. [2023-11-12 02:33:10,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:33:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 30 proven. 141 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-11-12 02:33:11,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544683488] [2023-11-12 02:33:11,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:11,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771898979] [2023-11-12 02:33:11,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771898979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:33:11,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:33:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-12 02:33:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861269792] [2023-11-12 02:33:11,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:33:11,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:33:11,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:33:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:33:11,197 INFO L87 Difference]: Start difference. First operand 313 states and 507 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2023-11-12 02:33:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:11,706 INFO L93 Difference]: Finished difference Result 629 states and 1016 transitions. [2023-11-12 02:33:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:33:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) Word has length 367 [2023-11-12 02:33:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:11,711 INFO L225 Difference]: With dead ends: 629 [2023-11-12 02:33:11,711 INFO L226 Difference]: Without dead ends: 319 [2023-11-12 02:33:11,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:33:11,714 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 333 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:11,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 514 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:33:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-12 02:33:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 317. [2023-11-12 02:33:11,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 253 states have (on average 1.5098814229249011) internal successors, (382), 254 states have internal predecessors, (382), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-12 02:33:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 502 transitions. [2023-11-12 02:33:11,747 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 502 transitions. Word has length 367 [2023-11-12 02:33:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:11,749 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 502 transitions. [2023-11-12 02:33:11,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2023-11-12 02:33:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 502 transitions. [2023-11-12 02:33:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-11-12 02:33:11,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:11,754 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:11,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:11,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:11,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:11,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1454309111, now seen corresponding path program 1 times [2023-11-12 02:33:11,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:11,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597991923] [2023-11-12 02:33:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:11,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:12,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:12,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555565631] [2023-11-12 02:33:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:12,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:12,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:12,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:12,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:33:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:12,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:33:12,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-11-12 02:33:12,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:33:12,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:12,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597991923] [2023-11-12 02:33:12,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:12,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555565631] [2023-11-12 02:33:12,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555565631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:12,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:12,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:33:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789445273] [2023-11-12 02:33:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:12,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:33:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:12,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:12,936 INFO L87 Difference]: Start difference. First operand 317 states and 502 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:13,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:13,280 INFO L93 Difference]: Finished difference Result 1151 states and 1831 transitions. [2023-11-12 02:33:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:13,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 368 [2023-11-12 02:33:13,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:13,288 INFO L225 Difference]: With dead ends: 1151 [2023-11-12 02:33:13,289 INFO L226 Difference]: Without dead ends: 837 [2023-11-12 02:33:13,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:33:13,291 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 478 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:13,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 877 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:33:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2023-11-12 02:33:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 815. [2023-11-12 02:33:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 688 states have (on average 1.5406976744186047) internal successors, (1060), 690 states have internal predecessors, (1060), 120 states have call successors, (120), 6 states have call predecessors, (120), 6 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-12 02:33:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1300 transitions. [2023-11-12 02:33:13,389 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1300 transitions. Word has length 368 [2023-11-12 02:33:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:13,390 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1300 transitions. [2023-11-12 02:33:13,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1300 transitions. [2023-11-12 02:33:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-11-12 02:33:13,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:13,395 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:13,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:13,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:13,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:13,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash 891251888, now seen corresponding path program 1 times [2023-11-12 02:33:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:13,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972545527] [2023-11-12 02:33:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:13,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:13,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:13,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148994372] [2023-11-12 02:33:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:13,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:13,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:13,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:33:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:14,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:33:14,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1920 proven. 0 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2023-11-12 02:33:15,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:33:15,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:15,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972545527] [2023-11-12 02:33:15,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:15,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148994372] [2023-11-12 02:33:15,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148994372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:15,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:15,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:15,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109561691] [2023-11-12 02:33:15,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:15,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:33:15,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:15,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:33:15,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:33:15,155 INFO L87 Difference]: Start difference. First operand 815 states and 1300 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-11-12 02:33:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:15,690 INFO L93 Difference]: Finished difference Result 1649 states and 2621 transitions. [2023-11-12 02:33:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:15,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 369 [2023-11-12 02:33:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:15,698 INFO L225 Difference]: With dead ends: 1649 [2023-11-12 02:33:15,698 INFO L226 Difference]: Without dead ends: 837 [2023-11-12 02:33:15,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:33:15,701 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 475 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:15,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1086 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:33:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2023-11-12 02:33:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 817. [2023-11-12 02:33:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 690 states have (on average 1.5304347826086957) internal successors, (1056), 692 states have internal predecessors, (1056), 120 states have call successors, (120), 6 states have call predecessors, (120), 6 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-12 02:33:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1296 transitions. [2023-11-12 02:33:15,773 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1296 transitions. Word has length 369 [2023-11-12 02:33:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:15,774 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1296 transitions. [2023-11-12 02:33:15,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-11-12 02:33:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1296 transitions. [2023-11-12 02:33:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-11-12 02:33:15,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:15,778 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:15,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:15,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:15,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:15,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:15,987 INFO L85 PathProgramCache]: Analyzing trace with hash -138107410, now seen corresponding path program 1 times [2023-11-12 02:33:15,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:15,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480030957] [2023-11-12 02:33:15,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:15,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:16,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:16,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565164667] [2023-11-12 02:33:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:16,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:16,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:16,056 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:16,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:33:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:16,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:33:16,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-11-12 02:33:17,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:33:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480030957] [2023-11-12 02:33:17,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565164667] [2023-11-12 02:33:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565164667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:17,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846298399] [2023-11-12 02:33:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:17,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:33:17,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:33:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:33:17,011 INFO L87 Difference]: Start difference. First operand 817 states and 1296 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:17,521 INFO L93 Difference]: Finished difference Result 3051 states and 4879 transitions. [2023-11-12 02:33:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:33:17,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 369 [2023-11-12 02:33:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:17,539 INFO L225 Difference]: With dead ends: 3051 [2023-11-12 02:33:17,539 INFO L226 Difference]: Without dead ends: 2237 [2023-11-12 02:33:17,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:33:17,542 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 817 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:17,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 949 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:33:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2023-11-12 02:33:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 1937. [2023-11-12 02:33:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1682 states have (on average 1.5529131985731273) internal successors, (2612), 1686 states have internal predecessors, (2612), 240 states have call successors, (240), 14 states have call predecessors, (240), 14 states have return successors, (240), 236 states have call predecessors, (240), 240 states have call successors, (240) [2023-11-12 02:33:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3092 transitions. [2023-11-12 02:33:17,691 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3092 transitions. Word has length 369 [2023-11-12 02:33:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:17,692 INFO L495 AbstractCegarLoop]: Abstraction has 1937 states and 3092 transitions. [2023-11-12 02:33:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3092 transitions. [2023-11-12 02:33:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-11-12 02:33:17,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:17,697 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:17,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:17,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:17,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:17,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1943545744, now seen corresponding path program 1 times [2023-11-12 02:33:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:17,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539527229] [2023-11-12 02:33:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:17,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:17,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891965963] [2023-11-12 02:33:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:17,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:17,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:17,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:17,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:33:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:18,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:33:18,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-11-12 02:33:19,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:33:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539527229] [2023-11-12 02:33:19,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891965963] [2023-11-12 02:33:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891965963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:19,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:19,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750911768] [2023-11-12 02:33:19,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:19,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:33:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:33:19,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:33:19,064 INFO L87 Difference]: Start difference. First operand 1937 states and 3092 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:20,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:20,132 INFO L93 Difference]: Finished difference Result 6255 states and 10074 transitions. [2023-11-12 02:33:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:33:20,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 369 [2023-11-12 02:33:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:20,164 INFO L225 Difference]: With dead ends: 6255 [2023-11-12 02:33:20,164 INFO L226 Difference]: Without dead ends: 4321 [2023-11-12 02:33:20,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:33:20,173 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 870 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:20,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1373 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:33:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2023-11-12 02:33:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 3885. [2023-11-12 02:33:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3885 states, 3372 states have (on average 1.5397390272835112) internal successors, (5192), 3380 states have internal predecessors, (5192), 480 states have call successors, (480), 32 states have call predecessors, (480), 32 states have return successors, (480), 472 states have call predecessors, (480), 480 states have call successors, (480) [2023-11-12 02:33:20,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 6152 transitions. [2023-11-12 02:33:20,495 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 6152 transitions. Word has length 369 [2023-11-12 02:33:20,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:20,496 INFO L495 AbstractCegarLoop]: Abstraction has 3885 states and 6152 transitions. [2023-11-12 02:33:20,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-11-12 02:33:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 6152 transitions. [2023-11-12 02:33:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-11-12 02:33:20,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:20,501 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:20,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:20,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:33:20,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:20,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1330353198, now seen corresponding path program 1 times [2023-11-12 02:33:20,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:20,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781141075] [2023-11-12 02:33:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:20,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343827258] [2023-11-12 02:33:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:20,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:20,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:20,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:33:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:21,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:33:21,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4078 proven. 192 refuted. 0 times theorem prover too weak. 2342 trivial. 0 not checked. [2023-11-12 02:33:22,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:33:23,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781141075] [2023-11-12 02:33:23,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343827258] [2023-11-12 02:33:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343827258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:33:23,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:33:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-12 02:33:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925822275] [2023-11-12 02:33:23,359 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-12 02:33:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:33:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:33:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:33:23,363 INFO L87 Difference]: Start difference. First operand 3885 states and 6152 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-12 02:33:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:24,498 INFO L93 Difference]: Finished difference Result 6027 states and 9540 transitions. [2023-11-12 02:33:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:33:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 369 [2023-11-12 02:33:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:24,515 INFO L225 Difference]: With dead ends: 6027 [2023-11-12 02:33:24,515 INFO L226 Difference]: Without dead ends: 2145 [2023-11-12 02:33:24,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:33:24,525 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 360 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:24,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1468 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:33:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-11-12 02:33:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1753. [2023-11-12 02:33:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1434 states have (on average 1.5174337517433751) internal successors, (2176), 1438 states have internal predecessors, (2176), 298 states have call successors, (298), 20 states have call predecessors, (298), 20 states have return successors, (298), 294 states have call predecessors, (298), 298 states have call successors, (298) [2023-11-12 02:33:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2772 transitions. [2023-11-12 02:33:24,699 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2772 transitions. Word has length 369 [2023-11-12 02:33:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:24,700 INFO L495 AbstractCegarLoop]: Abstraction has 1753 states and 2772 transitions. [2023-11-12 02:33:24,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-12 02:33:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2772 transitions. [2023-11-12 02:33:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-12 02:33:24,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:24,704 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:24,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:24,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 02:33:24,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:24,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1197485263, now seen corresponding path program 1 times [2023-11-12 02:33:24,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:24,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639403863] [2023-11-12 02:33:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:24,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:24,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622557491] [2023-11-12 02:33:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:24,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:24,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:24,973 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:25,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c5a447-ed82-4f6b-a5fd-a7672fd73f45/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process