./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-89.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b29ac98a85c5671f74af5656694b90e325003b38bb486d3b8562135cfd086b0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:48:28,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:48:29,007 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:48:29,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:48:29,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:48:29,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:48:29,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:48:29,037 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:48:29,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:48:29,039 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:48:29,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:48:29,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:48:29,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:48:29,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:48:29,041 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:48:29,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:48:29,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:48:29,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:48:29,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:48:29,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:48:29,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:48:29,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:48:29,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:48:29,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:48:29,049 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:48:29,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:48:29,050 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:48:29,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:48:29,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:48:29,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:48:29,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:48:29,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:48:29,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:48:29,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:48:29,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:48:29,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:48:29,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:48:29,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:48:29,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:48:29,053 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:48:29,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:48:29,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:48:29,054 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_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b29ac98a85c5671f74af5656694b90e325003b38bb486d3b8562135cfd086b0 [2023-11-29 01:48:29,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:48:29,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:48:29,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:48:29,285 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:48:29,286 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:48:29,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-89.i [2023-11-29 01:48:32,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:48:32,287 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:48:32,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-89.i [2023-11-29 01:48:32,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/data/eadedff04/d119aa70073e4d24be2a54f9ea5cc41a/FLAGe75ec456c [2023-11-29 01:48:32,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/data/eadedff04/d119aa70073e4d24be2a54f9ea5cc41a [2023-11-29 01:48:32,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:48:32,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:48:32,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:48:32,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:48:32,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:48:32,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a830d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32, skipping insertion in model container [2023-11-29 01:48:32,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:48:32,512 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_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-89.i[916,929] [2023-11-29 01:48:32,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:48:32,598 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:48:32,610 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_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-89.i[916,929] [2023-11-29 01:48:32,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:48:32,661 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:48:32,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32 WrapperNode [2023-11-29 01:48:32,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:48:32,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:48:32,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:48:32,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:48:32,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,728 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 256 [2023-11-29 01:48:32,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:48:32,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:48:32,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:48:32,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:48:32,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,772 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:48:32,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:48:32,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:48:32,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:48:32,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:48:32,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (1/1) ... [2023-11-29 01:48:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:48:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:32,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:48:32,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:48:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:48:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:48:32,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:48:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:48:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:48:32,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:48:32,970 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:48:32,973 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:48:33,425 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:48:33,473 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:48:33,473 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:48:33,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:48:33 BoogieIcfgContainer [2023-11-29 01:48:33,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:48:33,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:48:33,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:48:33,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:48:33,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:48:32" (1/3) ... [2023-11-29 01:48:33,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bcad96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:48:33, skipping insertion in model container [2023-11-29 01:48:33,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:32" (2/3) ... [2023-11-29 01:48:33,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bcad96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:48:33, skipping insertion in model container [2023-11-29 01:48:33,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:48:33" (3/3) ... [2023-11-29 01:48:33,483 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-89.i [2023-11-29 01:48:33,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:48:33,503 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:48:33,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:48:33,561 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;@26cf1c83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:48:33,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:48:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 01:48:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 01:48:33,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:33,586 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:33,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:33,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash 519694657, now seen corresponding path program 1 times [2023-11-29 01:48:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:33,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710495292] [2023-11-29 01:48:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:33,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:33,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710495292] [2023-11-29 01:48:33,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:48:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37337685] [2023-11-29 01:48:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:33,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:33,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:33,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:33,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:48:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:34,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:48:34,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-11-29 01:48:34,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37337685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:34,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:48:34,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666940206] [2023-11-29 01:48:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:34,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:48:34,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:48:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:48:34,154 INFO L87 Difference]: Start difference. First operand has 108 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 01:48:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:34,207 INFO L93 Difference]: Finished difference Result 213 states and 386 transitions. [2023-11-29 01:48:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:48:34,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 233 [2023-11-29 01:48:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:34,218 INFO L225 Difference]: With dead ends: 213 [2023-11-29 01:48:34,218 INFO L226 Difference]: Without dead ends: 106 [2023-11-29 01:48:34,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:48:34,225 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:34,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:48:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-29 01:48:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-29 01:48:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 01:48:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 168 transitions. [2023-11-29 01:48:34,274 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 168 transitions. Word has length 233 [2023-11-29 01:48:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:34,275 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 168 transitions. [2023-11-29 01:48:34,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 01:48:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 168 transitions. [2023-11-29 01:48:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 01:48:34,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:34,281 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:34,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 01:48:34,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:34,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:34,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1422491709, now seen corresponding path program 1 times [2023-11-29 01:48:34,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:34,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439180374] [2023-11-29 01:48:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:34,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:34,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:34,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047091708] [2023-11-29 01:48:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:34,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:34,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:34,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:34,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:48:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:34,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:48:34,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 01:48:34,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439180374] [2023-11-29 01:48:34,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:34,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047091708] [2023-11-29 01:48:34,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047091708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:34,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698543827] [2023-11-29 01:48:34,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:34,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:34,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:34,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:34,815 INFO L87 Difference]: Start difference. First operand 106 states and 168 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:34,934 INFO L93 Difference]: Finished difference Result 304 states and 482 transitions. [2023-11-29 01:48:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 233 [2023-11-29 01:48:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:34,939 INFO L225 Difference]: With dead ends: 304 [2023-11-29 01:48:34,940 INFO L226 Difference]: Without dead ends: 199 [2023-11-29 01:48:34,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:34,943 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:34,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 394 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-29 01:48:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 118. [2023-11-29 01:48:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 01:48:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 187 transitions. [2023-11-29 01:48:34,969 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 187 transitions. Word has length 233 [2023-11-29 01:48:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:34,972 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 187 transitions. [2023-11-29 01:48:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 187 transitions. [2023-11-29 01:48:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 01:48:34,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:34,978 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:34,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:48:35,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:35,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:35,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:35,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1680657147, now seen corresponding path program 1 times [2023-11-29 01:48:35,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:35,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347702588] [2023-11-29 01:48:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:35,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:35,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:35,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994870227] [2023-11-29 01:48:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:35,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:35,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:35,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:35,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:48:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:35,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:48:35,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 01:48:35,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:35,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:35,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347702588] [2023-11-29 01:48:35,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:35,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994870227] [2023-11-29 01:48:35,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994870227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:35,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:35,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:48:35,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605603621] [2023-11-29 01:48:35,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:35,554 INFO L87 Difference]: Start difference. First operand 118 states and 187 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:35,936 INFO L93 Difference]: Finished difference Result 337 states and 526 transitions. [2023-11-29 01:48:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:48:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 233 [2023-11-29 01:48:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:35,942 INFO L225 Difference]: With dead ends: 337 [2023-11-29 01:48:35,942 INFO L226 Difference]: Without dead ends: 220 [2023-11-29 01:48:35,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:48:35,944 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 261 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:35,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 434 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:48:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-29 01:48:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 140. [2023-11-29 01:48:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 99 states have internal predecessors, (141), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 01:48:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 217 transitions. [2023-11-29 01:48:35,981 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 217 transitions. Word has length 233 [2023-11-29 01:48:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:35,982 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 217 transitions. [2023-11-29 01:48:35,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 217 transitions. [2023-11-29 01:48:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 01:48:35,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:35,988 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:35,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:48:36,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 01:48:36,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:36,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash 604843259, now seen corresponding path program 1 times [2023-11-29 01:48:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656329395] [2023-11-29 01:48:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:36,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:36,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86307826] [2023-11-29 01:48:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:36,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:36,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:36,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:48:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:36,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:48:36,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 01:48:36,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:36,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656329395] [2023-11-29 01:48:36,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86307826] [2023-11-29 01:48:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86307826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:36,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:36,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:48:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534920393] [2023-11-29 01:48:36,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:36,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:48:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:48:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:48:36,571 INFO L87 Difference]: Start difference. First operand 140 states and 217 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:36,986 INFO L93 Difference]: Finished difference Result 358 states and 547 transitions. [2023-11-29 01:48:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:48:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 233 [2023-11-29 01:48:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:36,990 INFO L225 Difference]: With dead ends: 358 [2023-11-29 01:48:36,990 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 01:48:36,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:48:36,992 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 158 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:36,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 666 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:48:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 01:48:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 137. [2023-11-29 01:48:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 96 states have internal predecessors, (130), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 01:48:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 206 transitions. [2023-11-29 01:48:37,017 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 206 transitions. Word has length 233 [2023-11-29 01:48:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:37,018 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 206 transitions. [2023-11-29 01:48:37,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 206 transitions. [2023-11-29 01:48:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 01:48:37,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:37,023 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:37,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:48:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:37,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:37,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash 450128382, now seen corresponding path program 1 times [2023-11-29 01:48:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:37,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385773621] [2023-11-29 01:48:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:37,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:37,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709332132] [2023-11-29 01:48:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:37,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:37,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:37,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:37,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:48:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:37,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:48:37,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 321 proven. 105 refuted. 0 times theorem prover too weak. 2386 trivial. 0 not checked. [2023-11-29 01:48:37,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 6 proven. 105 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 01:48:38,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385773621] [2023-11-29 01:48:38,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:38,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709332132] [2023-11-29 01:48:38,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709332132] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:38,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:38,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 01:48:38,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907436082] [2023-11-29 01:48:38,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:38,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:48:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:38,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:48:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:48:38,091 INFO L87 Difference]: Start difference. First operand 137 states and 206 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-11-29 01:48:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:38,440 INFO L93 Difference]: Finished difference Result 281 states and 418 transitions. [2023-11-29 01:48:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:48:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) Word has length 234 [2023-11-29 01:48:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:38,443 INFO L225 Difference]: With dead ends: 281 [2023-11-29 01:48:38,443 INFO L226 Difference]: Without dead ends: 145 [2023-11-29 01:48:38,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:48:38,445 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 201 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:38,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 347 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:48:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-29 01:48:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2023-11-29 01:48:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 01:48:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2023-11-29 01:48:38,464 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 234 [2023-11-29 01:48:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:38,467 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2023-11-29 01:48:38,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-11-29 01:48:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2023-11-29 01:48:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 01:48:38,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:38,472 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:38,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:38,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:38,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:38,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash 209986265, now seen corresponding path program 1 times [2023-11-29 01:48:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:38,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236622852] [2023-11-29 01:48:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:38,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:38,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401000718] [2023-11-29 01:48:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:38,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:38,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:38,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:38,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:48:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:38,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:48:38,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 01:48:38,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:38,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236622852] [2023-11-29 01:48:38,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401000718] [2023-11-29 01:48:38,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401000718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:39,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:48:39,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129309408] [2023-11-29 01:48:39,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:39,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:48:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:48:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:48:39,002 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:39,662 INFO L93 Difference]: Finished difference Result 513 states and 753 transitions. [2023-11-29 01:48:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:48:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 235 [2023-11-29 01:48:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:39,666 INFO L225 Difference]: With dead ends: 513 [2023-11-29 01:48:39,666 INFO L226 Difference]: Without dead ends: 373 [2023-11-29 01:48:39,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:48:39,668 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 419 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:39,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1074 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:48:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-29 01:48:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 277. [2023-11-29 01:48:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 194 states have (on average 1.309278350515464) internal successors, (254), 194 states have internal predecessors, (254), 76 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 01:48:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 406 transitions. [2023-11-29 01:48:39,710 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 406 transitions. Word has length 235 [2023-11-29 01:48:39,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:39,711 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 406 transitions. [2023-11-29 01:48:39,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 406 transitions. [2023-11-29 01:48:39,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 01:48:39,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:39,715 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:39,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:48:39,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:39,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:39,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 710127151, now seen corresponding path program 1 times [2023-11-29 01:48:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:39,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633812949] [2023-11-29 01:48:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:39,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:39,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330134669] [2023-11-29 01:48:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:39,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:39,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:39,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:39,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:48:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:40,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:48:40,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-11-29 01:48:40,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 01:48:40,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:40,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633812949] [2023-11-29 01:48:40,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330134669] [2023-11-29 01:48:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330134669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:40,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:40,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-29 01:48:40,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624241475] [2023-11-29 01:48:40,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:48:40,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:48:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:48:40,955 INFO L87 Difference]: Start difference. First operand 277 states and 406 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 01:48:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:41,572 INFO L93 Difference]: Finished difference Result 581 states and 838 transitions. [2023-11-29 01:48:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:48:41,573 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) Word has length 235 [2023-11-29 01:48:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:41,575 INFO L225 Difference]: With dead ends: 581 [2023-11-29 01:48:41,575 INFO L226 Difference]: Without dead ends: 305 [2023-11-29 01:48:41,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:48:41,577 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 156 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:41,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 549 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:48:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-29 01:48:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 277. [2023-11-29 01:48:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 192 states have (on average 1.2916666666666667) internal successors, (248), 192 states have internal predecessors, (248), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 01:48:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 400 transitions. [2023-11-29 01:48:41,607 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 400 transitions. Word has length 235 [2023-11-29 01:48:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:41,608 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 400 transitions. [2023-11-29 01:48:41,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 01:48:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 400 transitions. [2023-11-29 01:48:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 01:48:41,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:41,610 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:41,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:41,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:41,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:41,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1798451450, now seen corresponding path program 1 times [2023-11-29 01:48:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:41,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957380192] [2023-11-29 01:48:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:41,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:41,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125845188] [2023-11-29 01:48:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:41,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:41,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:41,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:48:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:42,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:48:42,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-11-29 01:48:42,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 01:48:42,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:42,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957380192] [2023-11-29 01:48:42,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:42,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125845188] [2023-11-29 01:48:42,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125845188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:42,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:42,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 01:48:42,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713202593] [2023-11-29 01:48:42,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:42,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:48:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:48:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:48:42,795 INFO L87 Difference]: Start difference. First operand 277 states and 400 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 01:48:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:43,491 INFO L93 Difference]: Finished difference Result 564 states and 809 transitions. [2023-11-29 01:48:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:48:43,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) Word has length 236 [2023-11-29 01:48:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:43,495 INFO L225 Difference]: With dead ends: 564 [2023-11-29 01:48:43,495 INFO L226 Difference]: Without dead ends: 288 [2023-11-29 01:48:43,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:48:43,496 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 262 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:43,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 531 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:48:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-29 01:48:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 273. [2023-11-29 01:48:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 188 states have internal predecessors, (242), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 01:48:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 394 transitions. [2023-11-29 01:48:43,522 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 394 transitions. Word has length 236 [2023-11-29 01:48:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:43,523 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 394 transitions. [2023-11-29 01:48:43,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 01:48:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 394 transitions. [2023-11-29 01:48:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 01:48:43,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:43,525 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:43,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:48:43,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:43,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:43,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash -306462852, now seen corresponding path program 1 times [2023-11-29 01:48:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316402368] [2023-11-29 01:48:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:43,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:43,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097941437] [2023-11-29 01:48:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:43,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:43,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:43,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:43,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:48:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:43,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:48:43,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 01:48:43,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316402368] [2023-11-29 01:48:43,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097941437] [2023-11-29 01:48:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097941437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:48:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992423347] [2023-11-29 01:48:43,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:43,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:48:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:43,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:48:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:48:43,946 INFO L87 Difference]: Start difference. First operand 273 states and 394 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:44,127 INFO L93 Difference]: Finished difference Result 570 states and 817 transitions. [2023-11-29 01:48:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:48:44,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 236 [2023-11-29 01:48:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:44,131 INFO L225 Difference]: With dead ends: 570 [2023-11-29 01:48:44,131 INFO L226 Difference]: Without dead ends: 298 [2023-11-29 01:48:44,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:48:44,133 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 70 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:44,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 871 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-29 01:48:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 277. [2023-11-29 01:48:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 192 states have (on average 1.2864583333333333) internal successors, (247), 192 states have internal predecessors, (247), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 01:48:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 399 transitions. [2023-11-29 01:48:44,170 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 399 transitions. Word has length 236 [2023-11-29 01:48:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:44,170 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 399 transitions. [2023-11-29 01:48:44,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 399 transitions. [2023-11-29 01:48:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 01:48:44,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:44,173 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:44,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:44,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:44,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:44,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash -493338525, now seen corresponding path program 1 times [2023-11-29 01:48:44,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:44,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961794114] [2023-11-29 01:48:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:44,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:44,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:44,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128839178] [2023-11-29 01:48:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:44,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:44,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:44,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:44,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:48:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:44,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:48:44,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 01:48:44,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:44,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:44,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961794114] [2023-11-29 01:48:44,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:44,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128839178] [2023-11-29 01:48:44,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128839178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:44,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:44,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:48:44,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246977349] [2023-11-29 01:48:44,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:44,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:48:44,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:48:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:48:44,852 INFO L87 Difference]: Start difference. First operand 277 states and 399 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:45,207 INFO L93 Difference]: Finished difference Result 776 states and 1120 transitions. [2023-11-29 01:48:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:48:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 236 [2023-11-29 01:48:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:45,211 INFO L225 Difference]: With dead ends: 776 [2023-11-29 01:48:45,211 INFO L226 Difference]: Without dead ends: 500 [2023-11-29 01:48:45,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:48:45,213 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 240 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:45,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 508 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:48:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-29 01:48:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 415. [2023-11-29 01:48:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 288 states have (on average 1.28125) internal successors, (369), 288 states have internal predecessors, (369), 114 states have call successors, (114), 12 states have call predecessors, (114), 12 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 01:48:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 597 transitions. [2023-11-29 01:48:45,262 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 597 transitions. Word has length 236 [2023-11-29 01:48:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:45,262 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 597 transitions. [2023-11-29 01:48:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 01:48:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 597 transitions. [2023-11-29 01:48:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-29 01:48:45,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:45,265 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:45,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:48:45,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:48:45,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:45,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1326569289, now seen corresponding path program 1 times [2023-11-29 01:48:45,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:45,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55833964] [2023-11-29 01:48:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:45,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:45,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251171829] [2023-11-29 01:48:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:45,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:45,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:45,496 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:45,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:48:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:45,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:48:45,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 321 proven. 105 refuted. 0 times theorem prover too weak. 2386 trivial. 0 not checked. [2023-11-29 01:48:46,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 6 proven. 105 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 01:48:46,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:46,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55833964] [2023-11-29 01:48:46,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:46,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251171829] [2023-11-29 01:48:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251171829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:46,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:46,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 01:48:46,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769938942] [2023-11-29 01:48:46,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:46,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:48:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:48:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:48:46,326 INFO L87 Difference]: Start difference. First operand 415 states and 597 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-11-29 01:48:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:47,172 INFO L93 Difference]: Finished difference Result 931 states and 1319 transitions. [2023-11-29 01:48:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:48:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) Word has length 237 [2023-11-29 01:48:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:47,177 INFO L225 Difference]: With dead ends: 931 [2023-11-29 01:48:47,177 INFO L226 Difference]: Without dead ends: 517 [2023-11-29 01:48:47,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:48:47,180 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 323 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:47,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 716 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:48:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-29 01:48:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 441. [2023-11-29 01:48:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 314 states have (on average 1.2898089171974523) internal successors, (405), 314 states have internal predecessors, (405), 114 states have call successors, (114), 12 states have call predecessors, (114), 12 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 01:48:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 633 transitions. [2023-11-29 01:48:47,235 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 633 transitions. Word has length 237 [2023-11-29 01:48:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:47,236 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 633 transitions. [2023-11-29 01:48:47,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-11-29 01:48:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 633 transitions. [2023-11-29 01:48:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-29 01:48:47,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:47,238 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:47,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:48:47,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:48:47,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:47,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1326964506, now seen corresponding path program 1 times [2023-11-29 01:48:47,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:47,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350861801] [2023-11-29 01:48:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:47,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:47,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848497698] [2023-11-29 01:48:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:47,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:47,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:47,471 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0d7de-f716-46a4-95d9-e69e1e7db50f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process