./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.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_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0cf2f240a207b9fd94ff47176fc66686eff0a1305e9376e15a89fac66684ae53 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:57,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:57,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:59:57,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:57,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:57,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:57,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:57,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:57,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:59:57,648 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:59:57,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:59:57,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:59:57,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:57,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:57,651 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:57,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:57,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:59:57,653 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:59:57,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:57,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:59:57,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:57,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:59:57,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:59:57,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:59:57,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:59:57,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:59:57,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:57,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:57,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:57,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:59:57,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:59:57,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:57,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:57,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:59:57,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:59:57,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:57,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:59:57,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:59:57,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:59:57,665 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:59:57,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:59:57,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:59:57,666 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_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cf2f240a207b9fd94ff47176fc66686eff0a1305e9376e15a89fac66684ae53 [2023-11-26 11:59:57,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:59:57,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:59:57,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:59:57,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:59:57,928 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:59:57,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2023-11-26 12:00:01,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:01,451 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:01,452 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2023-11-26 12:00:01,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/data/f7b5893eb/58096f28f9b34f3e866fe0433eebefcc/FLAG86f894df8 [2023-11-26 12:00:01,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/data/f7b5893eb/58096f28f9b34f3e866fe0433eebefcc [2023-11-26 12:00:01,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:01,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:01,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:01,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:01,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:01,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:01" (1/1) ... [2023-11-26 12:00:01,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bec1ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:01, skipping insertion in model container [2023-11-26 12:00:01,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:01" (1/1) ... [2023-11-26 12:00:01,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:01,712 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_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i[916,929] [2023-11-26 12:00:01,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:01,980 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:01,992 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_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i[916,929] [2023-11-26 12:00:02,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:02,179 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:02,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02 WrapperNode [2023-11-26 12:00:02,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:02,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:02,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:02,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:02,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,320 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 423 [2023-11-26 12:00:02,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:02,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:02,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:02,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:02,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,395 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:00:02,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:02,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:02,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:02,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:02,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (1/1) ... [2023-11-26 12:00:02,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:02,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:02,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:00:02,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:00:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:02,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:02,708 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:02,711 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:04,051 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:04,113 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:04,114 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:00:04,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:04 BoogieIcfgContainer [2023-11-26 12:00:04,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:04,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:04,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:04,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:04,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:01" (1/3) ... [2023-11-26 12:00:04,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eee921c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:04, skipping insertion in model container [2023-11-26 12:00:04,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:02" (2/3) ... [2023-11-26 12:00:04,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eee921c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:04, skipping insertion in model container [2023-11-26 12:00:04,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:04" (3/3) ... [2023-11-26 12:00:04,156 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-54.i [2023-11-26 12:00:04,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:04,180 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:00:04,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:04,257 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;@3c05b84e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:04,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:00:04,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 105 states have (on average 1.5333333333333334) internal successors, (161), 106 states have internal predecessors, (161), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-26 12:00:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-26 12:00:04,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:04,306 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:04,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:04,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1649700814, now seen corresponding path program 1 times [2023-11-26 12:00:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:04,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812351483] [2023-11-26 12:00:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812351483] [2023-11-26 12:00:04,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:00:04,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618165214] [2023-11-26 12:00:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:04,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:04,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:00:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:05,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:00:05,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2023-11-26 12:00:05,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618165214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:05,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:05,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656896689] [2023-11-26 12:00:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:00:05,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:05,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:00:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:05,342 INFO L87 Difference]: Start difference. First operand has 174 states, 105 states have (on average 1.5333333333333334) internal successors, (161), 106 states have internal predecessors, (161), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-11-26 12:00:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:05,415 INFO L93 Difference]: Finished difference Result 345 states and 650 transitions. [2023-11-26 12:00:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:00:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 399 [2023-11-26 12:00:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:05,429 INFO L225 Difference]: With dead ends: 345 [2023-11-26 12:00:05,429 INFO L226 Difference]: Without dead ends: 172 [2023-11-26 12:00:05,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:05,445 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:05,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-26 12:00:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-26 12:00:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 104 states have (on average 1.4903846153846154) internal successors, (155), 104 states have internal predecessors, (155), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-26 12:00:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 287 transitions. [2023-11-26 12:00:05,535 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 287 transitions. Word has length 399 [2023-11-26 12:00:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:05,536 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 287 transitions. [2023-11-26 12:00:05,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-11-26 12:00:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 287 transitions. [2023-11-26 12:00:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-26 12:00:05,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:05,549 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:05,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:05,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:05,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:05,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -40314366, now seen corresponding path program 1 times [2023-11-26 12:00:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781823012] [2023-11-26 12:00:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:05,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:05,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903397322] [2023-11-26 12:00:05,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:05,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:05,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:06,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:00:06,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-11-26 12:00:06,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781823012] [2023-11-26 12:00:06,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903397322] [2023-11-26 12:00:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903397322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712685917] [2023-11-26 12:00:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:06,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:06,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:06,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:06,444 INFO L87 Difference]: Start difference. First operand 172 states and 287 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-26 12:00:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:06,606 INFO L93 Difference]: Finished difference Result 422 states and 704 transitions. [2023-11-26 12:00:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 399 [2023-11-26 12:00:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:06,619 INFO L225 Difference]: With dead ends: 422 [2023-11-26 12:00:06,619 INFO L226 Difference]: Without dead ends: 251 [2023-11-26 12:00:06,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:06,629 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 129 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:06,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 556 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-26 12:00:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 248. [2023-11-26 12:00:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 165 states have (on average 1.5272727272727273) internal successors, (252), 166 states have internal predecessors, (252), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-26 12:00:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 412 transitions. [2023-11-26 12:00:06,698 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 412 transitions. Word has length 399 [2023-11-26 12:00:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:06,700 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 412 transitions. [2023-11-26 12:00:06,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-26 12:00:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 412 transitions. [2023-11-26 12:00:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-11-26 12:00:06,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:06,711 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:06,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:06,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:06,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:06,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1574040100, now seen corresponding path program 1 times [2023-11-26 12:00:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:06,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497046478] [2023-11-26 12:00:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:06,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:07,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564272425] [2023-11-26 12:00:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:07,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:07,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:07,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:07,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:00:07,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 573 proven. 189 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2023-11-26 12:00:08,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-11-26 12:00:08,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:08,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497046478] [2023-11-26 12:00:08,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:08,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564272425] [2023-11-26 12:00:08,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564272425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:08,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:08,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 12:00:08,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566087681] [2023-11-26 12:00:08,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:08,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:00:08,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:00:08,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:00:08,740 INFO L87 Difference]: Start difference. First operand 248 states and 412 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2023-11-26 12:00:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:09,390 INFO L93 Difference]: Finished difference Result 507 states and 833 transitions. [2023-11-26 12:00:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:00:09,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) Word has length 400 [2023-11-26 12:00:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:09,398 INFO L225 Difference]: With dead ends: 507 [2023-11-26 12:00:09,398 INFO L226 Difference]: Without dead ends: 260 [2023-11-26 12:00:09,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:09,401 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 214 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:09,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 443 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:00:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-26 12:00:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2023-11-26 12:00:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 171 states have (on average 1.4619883040935673) internal successors, (250), 172 states have internal predecessors, (250), 80 states have call successors, (80), 4 states have call predecessors, (80), 4 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-26 12:00:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 410 transitions. [2023-11-26 12:00:09,461 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 410 transitions. Word has length 400 [2023-11-26 12:00:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:09,467 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 410 transitions. [2023-11-26 12:00:09,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2023-11-26 12:00:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 410 transitions. [2023-11-26 12:00:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-11-26 12:00:09,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:09,473 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:09,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:09,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:09,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:09,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash -539116582, now seen corresponding path program 1 times [2023-11-26 12:00:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:09,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324851248] [2023-11-26 12:00:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:09,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:09,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:09,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678853579] [2023-11-26 12:00:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:09,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:09,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:09,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:10,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:00:10,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2006 proven. 342 refuted. 0 times theorem prover too weak. 6232 trivial. 0 not checked. [2023-11-26 12:00:11,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 42 proven. 345 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2023-11-26 12:00:13,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:13,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324851248] [2023-11-26 12:00:13,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:13,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678853579] [2023-11-26 12:00:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678853579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:13,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:13,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-26 12:00:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000176207] [2023-11-26 12:00:13,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:00:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:00:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:00:13,480 INFO L87 Difference]: Start difference. First operand 256 states and 410 transitions. Second operand has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 5 states have call successors, (125), 3 states have call predecessors, (125), 7 states have return successors, (126), 5 states have call predecessors, (126), 5 states have call successors, (126) [2023-11-26 12:00:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:15,290 INFO L93 Difference]: Finished difference Result 715 states and 1123 transitions. [2023-11-26 12:00:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 12:00:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 5 states have call successors, (125), 3 states have call predecessors, (125), 7 states have return successors, (126), 5 states have call predecessors, (126), 5 states have call successors, (126) Word has length 401 [2023-11-26 12:00:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:15,303 INFO L225 Difference]: With dead ends: 715 [2023-11-26 12:00:15,303 INFO L226 Difference]: Without dead ends: 460 [2023-11-26 12:00:15,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=732, Unknown=0, NotChecked=0, Total=1056 [2023-11-26 12:00:15,307 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 951 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:15,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 917 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 12:00:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-26 12:00:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 381. [2023-11-26 12:00:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 280 states have (on average 1.4607142857142856) internal successors, (409), 283 states have internal predecessors, (409), 88 states have call successors, (88), 12 states have call predecessors, (88), 12 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-26 12:00:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 585 transitions. [2023-11-26 12:00:15,372 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 585 transitions. Word has length 401 [2023-11-26 12:00:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:15,374 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 585 transitions. [2023-11-26 12:00:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 5 states have call successors, (125), 3 states have call predecessors, (125), 7 states have return successors, (126), 5 states have call predecessors, (126), 5 states have call successors, (126) [2023-11-26 12:00:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 585 transitions. [2023-11-26 12:00:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-11-26 12:00:15,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:15,382 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:15,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:15,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:15,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:15,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2127464484, now seen corresponding path program 1 times [2023-11-26 12:00:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:15,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951082903] [2023-11-26 12:00:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:15,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:15,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:15,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792247696] [2023-11-26 12:00:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:15,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:15,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:15,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:15,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:00:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:16,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-26 12:00:16,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5622 proven. 339 refuted. 0 times theorem prover too weak. 2619 trivial. 0 not checked. [2023-11-26 12:00:18,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 429 proven. 147 refuted. 0 times theorem prover too weak. 8004 trivial. 0 not checked. [2023-11-26 12:00:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951082903] [2023-11-26 12:00:25,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792247696] [2023-11-26 12:00:25,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792247696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:25,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:25,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 31 [2023-11-26 12:00:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643861813] [2023-11-26 12:00:25,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:25,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-26 12:00:25,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-26 12:00:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2023-11-26 12:00:25,347 INFO L87 Difference]: Start difference. First operand 381 states and 585 transitions. Second operand has 31 states, 30 states have (on average 4.8) internal successors, (144), 28 states have internal predecessors, (144), 10 states have call successors, (105), 7 states have call predecessors, (105), 13 states have return successors, (106), 10 states have call predecessors, (106), 10 states have call successors, (106) [2023-11-26 12:00:30,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:00:37,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:00:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:46,722 INFO L93 Difference]: Finished difference Result 1294 states and 1920 transitions. [2023-11-26 12:00:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-26 12:00:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.8) internal successors, (144), 28 states have internal predecessors, (144), 10 states have call successors, (105), 7 states have call predecessors, (105), 13 states have return successors, (106), 10 states have call predecessors, (106), 10 states have call successors, (106) Word has length 401 [2023-11-26 12:00:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:46,731 INFO L225 Difference]: With dead ends: 1294 [2023-11-26 12:00:46,731 INFO L226 Difference]: Without dead ends: 914 [2023-11-26 12:00:46,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 730 SyntacticMatches, 48 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5556 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=2640, Invalid=8490, Unknown=0, NotChecked=0, Total=11130 [2023-11-26 12:00:46,738 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1276 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 966 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:46,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1420 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [966 Valid, 1450 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2023-11-26 12:00:46,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-11-26 12:00:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 573. [2023-11-26 12:00:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 382 states have (on average 1.3455497382198953) internal successors, (514), 385 states have internal predecessors, (514), 160 states have call successors, (160), 30 states have call predecessors, (160), 30 states have return successors, (160), 157 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-26 12:00:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 834 transitions. [2023-11-26 12:00:46,871 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 834 transitions. Word has length 401 [2023-11-26 12:00:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:46,872 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 834 transitions. [2023-11-26 12:00:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.8) internal successors, (144), 28 states have internal predecessors, (144), 10 states have call successors, (105), 7 states have call predecessors, (105), 13 states have return successors, (106), 10 states have call predecessors, (106), 10 states have call successors, (106) [2023-11-26 12:00:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 834 transitions. [2023-11-26 12:00:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-11-26 12:00:46,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:46,895 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:46,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:47,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:47,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash -787089188, now seen corresponding path program 1 times [2023-11-26 12:00:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674500597] [2023-11-26 12:00:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:47,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811159373] [2023-11-26 12:00:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:47,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:47,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:47,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:47,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0439ebc3-67c7-4cfa-a0af-cc127dd5192f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:00:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:47,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-26 12:00:47,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5018 proven. 327 refuted. 0 times theorem prover too weak. 3235 trivial. 0 not checked. [2023-11-26 12:00:49,368 INFO L327 TraceCheckSpWp]: Computing backward predicates...