./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-18.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/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_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/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_47c0312f-63f0-4fef-ab71-f1f86863b957/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 2bcc4deda2a1afd19216e8d0fb825ecac957b1f9302951527cb1e0271d231d7f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:33,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:33,525 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:00:33,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:33,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:33,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:33,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:33,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:33,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:33,581 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:33,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:33,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:33,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:33,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:33,586 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:33,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:33,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:33,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:33,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:33,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:33,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:33,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:33,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:33,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:33,590 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:33,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:33,591 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:33,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:33,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:33,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:33,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:33,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:33,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:33,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:33,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:33,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:33,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:33,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:33,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:33,595 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:33,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:33,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:33,596 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_47c0312f-63f0-4fef-ab71-f1f86863b957/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bcc4deda2a1afd19216e8d0fb825ecac957b1f9302951527cb1e0271d231d7f [2023-11-26 12:00:33,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:34,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:34,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:34,023 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:34,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:34,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-18.i [2023-11-26 12:00:37,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:37,826 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:37,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-18.i [2023-11-26 12:00:37,864 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/data/4682d6af8/c7e82cacaaf24659aa224aa76bb967fa/FLAG360c9ffd5 [2023-11-26 12:00:37,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/data/4682d6af8/c7e82cacaaf24659aa224aa76bb967fa [2023-11-26 12:00:37,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:37,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:37,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:37,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:37,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:37,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:37" (1/1) ... [2023-11-26 12:00:37,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3348abb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:37, skipping insertion in model container [2023-11-26 12:00:37,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:37" (1/1) ... [2023-11-26 12:00:37,963 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:38,143 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_47c0312f-63f0-4fef-ab71-f1f86863b957/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-18.i[916,929] [2023-11-26 12:00:38,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:38,248 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:38,262 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_47c0312f-63f0-4fef-ab71-f1f86863b957/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-18.i[916,929] [2023-11-26 12:00:38,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:38,391 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:38,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38 WrapperNode [2023-11-26 12:00:38,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:38,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:38,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:38,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:38,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,482 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 290 [2023-11-26 12:00:38,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:38,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:38,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:38,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:38,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,505 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,525 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 12:00:38,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:38,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:38,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:38,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:38,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (1/1) ... [2023-11-26 12:00:38,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:38,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:38,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:38,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:00:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:00:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:38,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:38,829 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:38,832 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:39,462 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:39,517 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:39,517 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:00:39,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:39 BoogieIcfgContainer [2023-11-26 12:00:39,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:39,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:39,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:39,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:39,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:37" (1/3) ... [2023-11-26 12:00:39,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a89a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:39, skipping insertion in model container [2023-11-26 12:00:39,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:38" (2/3) ... [2023-11-26 12:00:39,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a89a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:39, skipping insertion in model container [2023-11-26 12:00:39,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:39" (3/3) ... [2023-11-26 12:00:39,532 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-18.i [2023-11-26 12:00:39,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:39,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:00:39,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:39,634 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;@7cb1e19f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:39,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:00:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 72 states have (on average 1.5277777777777777) internal successors, (110), 73 states have internal predecessors, (110), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-26 12:00:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-26 12:00:39,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:39,673 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:39,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:39,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:39,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1865057728, now seen corresponding path program 1 times [2023-11-26 12:00:39,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812847084] [2023-11-26 12:00:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:40,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812847084] [2023-11-26 12:00:40,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:00:40,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507648658] [2023-11-26 12:00:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:40,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:40,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:40,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:00:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:40,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:00:40,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-11-26 12:00:40,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507648658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:40,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:40,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:40,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085879321] [2023-11-26 12:00:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:40,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:00:40,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:40,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:00:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:40,926 INFO L87 Difference]: Start difference. First operand has 119 states, 72 states have (on average 1.5277777777777777) internal successors, (110), 73 states have internal predecessors, (110), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-26 12:00:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:41,032 INFO L93 Difference]: Finished difference Result 235 states and 438 transitions. [2023-11-26 12:00:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:00:41,036 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 272 [2023-11-26 12:00:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:41,048 INFO L225 Difference]: With dead ends: 235 [2023-11-26 12:00:41,048 INFO L226 Difference]: Without dead ends: 117 [2023-11-26 12:00:41,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 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 12:00:41,068 INFO L413 NwaCegarLoop]: 190 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, 190 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 12:00:41,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-26 12:00:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-26 12:00:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 71 states have internal predecessors, (105), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-26 12:00:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 193 transitions. [2023-11-26 12:00:41,177 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 193 transitions. Word has length 272 [2023-11-26 12:00:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:41,177 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 193 transitions. [2023-11-26 12:00:41,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-26 12:00:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 193 transitions. [2023-11-26 12:00:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-26 12:00:41,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:41,188 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:41,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:41,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 12:00:41,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:41,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1367489080, now seen corresponding path program 1 times [2023-11-26 12:00:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664838976] [2023-11-26 12:00:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:41,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:41,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407247566] [2023-11-26 12:00:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:41,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:41,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:41,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:41,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:41,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:00:41,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-26 12:00:42,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:42,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664838976] [2023-11-26 12:00:42,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407247566] [2023-11-26 12:00:42,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407247566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:42,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:42,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:42,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689472914] [2023-11-26 12:00:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:42,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:42,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:42,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:42,526 INFO L87 Difference]: Start difference. First operand 117 states and 193 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-26 12:00:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:42,657 INFO L93 Difference]: Finished difference Result 348 states and 575 transitions. [2023-11-26 12:00:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:42,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 272 [2023-11-26 12:00:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:42,664 INFO L225 Difference]: With dead ends: 348 [2023-11-26 12:00:42,665 INFO L226 Difference]: Without dead ends: 232 [2023-11-26 12:00:42,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 270 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 12:00:42,668 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 70 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:42,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 406 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-26 12:00:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2023-11-26 12:00:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 139 states have (on average 1.474820143884892) internal successors, (205), 139 states have internal predecessors, (205), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-26 12:00:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 381 transitions. [2023-11-26 12:00:42,728 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 381 transitions. Word has length 272 [2023-11-26 12:00:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:42,730 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 381 transitions. [2023-11-26 12:00:42,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-26 12:00:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 381 transitions. [2023-11-26 12:00:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-26 12:00:42,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:42,737 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:42,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:42,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:42,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:42,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1233475574, now seen corresponding path program 1 times [2023-11-26 12:00:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196004163] [2023-11-26 12:00:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:43,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:43,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406208809] [2023-11-26 12:00:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:43,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:43,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:43,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:43,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:00:43,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1935 proven. 63 refuted. 0 times theorem prover too weak. 1786 trivial. 0 not checked. [2023-11-26 12:00:43,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 66 proven. 63 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-11-26 12:00:44,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196004163] [2023-11-26 12:00:44,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:44,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406208809] [2023-11-26 12:00:44,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406208809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:44,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:44,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-26 12:00:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663537274] [2023-11-26 12:00:44,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:44,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:00:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:00:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:44,516 INFO L87 Difference]: Start difference. First operand 230 states and 381 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 3 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-11-26 12:00:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:46,295 INFO L93 Difference]: Finished difference Result 928 states and 1498 transitions. [2023-11-26 12:00:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-26 12:00:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 3 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 272 [2023-11-26 12:00:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:46,313 INFO L225 Difference]: With dead ends: 928 [2023-11-26 12:00:46,313 INFO L226 Difference]: Without dead ends: 699 [2023-11-26 12:00:46,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=618, Unknown=0, NotChecked=0, Total=930 [2023-11-26 12:00:46,320 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 745 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:46,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 584 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 12:00:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-26 12:00:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 323. [2023-11-26 12:00:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 207 states have (on average 1.4830917874396135) internal successors, (307), 208 states have internal predecessors, (307), 109 states have call successors, (109), 6 states have call predecessors, (109), 6 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-26 12:00:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 525 transitions. [2023-11-26 12:00:46,472 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 525 transitions. Word has length 272 [2023-11-26 12:00:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:46,475 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 525 transitions. [2023-11-26 12:00:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 3 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-11-26 12:00:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 525 transitions. [2023-11-26 12:00:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-26 12:00:46,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:46,481 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:46,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:46,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:46,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:46,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:46,690 INFO L85 PathProgramCache]: Analyzing trace with hash -719695377, now seen corresponding path program 1 times [2023-11-26 12:00:46,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:46,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408565298] [2023-11-26 12:00:46,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:46,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:46,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:46,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282532271] [2023-11-26 12:00:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:46,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:46,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:46,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:46,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:46,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:46,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-11-26 12:00:47,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:47,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408565298] [2023-11-26 12:00:47,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282532271] [2023-11-26 12:00:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282532271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:47,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:47,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:47,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916277682] [2023-11-26 12:00:47,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:47,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:47,017 INFO L87 Difference]: Start difference. First operand 323 states and 525 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-26 12:00:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:47,369 INFO L93 Difference]: Finished difference Result 950 states and 1536 transitions. [2023-11-26 12:00:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:47,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 272 [2023-11-26 12:00:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:47,376 INFO L225 Difference]: With dead ends: 950 [2023-11-26 12:00:47,377 INFO L226 Difference]: Without dead ends: 628 [2023-11-26 12:00:47,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:47,382 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 280 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:47,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 424 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:00:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-11-26 12:00:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 621. [2023-11-26 12:00:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 404 states have (on average 1.4702970297029703) internal successors, (594), 408 states have internal predecessors, (594), 204 states have call successors, (204), 12 states have call predecessors, (204), 12 states have return successors, (204), 200 states have call predecessors, (204), 204 states have call successors, (204) [2023-11-26 12:00:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1002 transitions. [2023-11-26 12:00:47,526 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1002 transitions. Word has length 272 [2023-11-26 12:00:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:47,527 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 1002 transitions. [2023-11-26 12:00:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-11-26 12:00:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1002 transitions. [2023-11-26 12:00:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-26 12:00:47,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:47,534 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:47,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:47,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:47,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:47,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:47,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1581127213, now seen corresponding path program 1 times [2023-11-26 12:00:47,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:47,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596514541] [2023-11-26 12:00:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:47,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:47,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772921444] [2023-11-26 12:00:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:47,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:47,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:47,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c0312f-63f0-4fef-ab71-f1f86863b957/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:00:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:48,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:00:48,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1957 proven. 126 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-11-26 12:00:48,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 126 proven. 129 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2023-11-26 12:01:28,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596514541] [2023-11-26 12:01:28,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772921444] [2023-11-26 12:01:28,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772921444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:28,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:28,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-26 12:01:28,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879344140] [2023-11-26 12:01:28,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:28,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 12:01:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 12:01:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-11-26 12:01:28,715 INFO L87 Difference]: Start difference. First operand 621 states and 1002 transitions. Second operand has 20 states, 19 states have (on average 5.0) internal successors, (95), 18 states have internal predecessors, (95), 5 states have call successors, (66), 3 states have call predecessors, (66), 6 states have return successors, (67), 5 states have call predecessors, (67), 5 states have call successors, (67)