./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX --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 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:42:36,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:42:36,387 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:42:36,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:42:36,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:42:36,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:42:36,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:42:36,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:42:36,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:42:36,419 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:42:36,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:42:36,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:42:36,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:42:36,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:42:36,421 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:42:36,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:42:36,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:42:36,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:42:36,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:42:36,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:42:36,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:42:36,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:42:36,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:42:36,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:42:36,436 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:42:36,436 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:42:36,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:42:36,437 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:42:36,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:42:36,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:42:36,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:42:36,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:42:36,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:42:36,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:42:36,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:42:36,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:42:36,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:42:36,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:42:36,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:42:36,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:42:36,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:42:36,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:42:36,443 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_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 [2024-11-08 18:42:36,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:42:36,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:42:36,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:42:36,792 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:42:36,792 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:42:36,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c Unable to find full path for "g++" [2024-11-08 18:42:38,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:42:39,349 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:42:39,350 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-08 18:42:39,383 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/data/91a0214b7/409ba867450e4347ac5a543b133a6357/FLAG14ec05378 [2024-11-08 18:42:39,423 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/data/91a0214b7/409ba867450e4347ac5a543b133a6357 [2024-11-08 18:42:39,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:42:39,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:42:39,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:42:39,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:42:39,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:42:39,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:42:39" (1/1) ... [2024-11-08 18:42:39,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3e42af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:39, skipping insertion in model container [2024-11-08 18:42:39,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:42:39" (1/1) ... [2024-11-08 18:42:39,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:42:39,948 WARN L250 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_58803318-b86e-4a24-bec1-ef30346a313e/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-08 18:42:40,058 WARN L250 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_58803318-b86e-4a24-bec1-ef30346a313e/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-08 18:42:41,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:42:41,093 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:42:41,136 WARN L250 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_58803318-b86e-4a24-bec1-ef30346a313e/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-08 18:42:41,157 WARN L250 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_58803318-b86e-4a24-bec1-ef30346a313e/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-08 18:42:41,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:42:41,838 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:42:41,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41 WrapperNode [2024-11-08 18:42:41,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:42:41,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:42:41,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:42:41,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:42:41,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:41,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,393 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-11-08 18:42:42,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:42:42,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:42:42,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:42:42,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:42:42,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,644 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]. [2024-11-08 18:42:42,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:42:42,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:42:42,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:42:42,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:42:42,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (1/1) ... [2024-11-08 18:42:42,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:42:42,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:42:43,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:42:43,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:42:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:42:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:42:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:42:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:42:43,246 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:42:43,248 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:42:48,798 INFO L? ?]: Removed 733 outVars from TransFormulas that were not future-live. [2024-11-08 18:42:48,798 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:42:48,849 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:42:48,849 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:42:48,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:42:48 BoogieIcfgContainer [2024-11-08 18:42:48,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:42:48,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:42:48,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:42:48,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:42:48,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:42:39" (1/3) ... [2024-11-08 18:42:48,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6162e9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:42:48, skipping insertion in model container [2024-11-08 18:42:48,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:42:41" (2/3) ... [2024-11-08 18:42:48,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6162e9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:42:48, skipping insertion in model container [2024-11-08 18:42:48,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:42:48" (3/3) ... [2024-11-08 18:42:48,862 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-08 18:42:48,880 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:42:48,880 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:42:48,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:42:49,006 INFO L333 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, 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;@1952f9e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:42:49,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:42:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 18:42:49,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:49,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:49,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:49,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -62924208, now seen corresponding path program 1 times [2024-11-08 18:42:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830096850] [2024-11-08 18:42:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:49,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:49,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830096850] [2024-11-08 18:42:49,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830096850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:49,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:49,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:42:49,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220666788] [2024-11-08 18:42:49,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:49,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:42:49,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:42:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:42:49,367 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:49,471 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-11-08 18:42:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:42:49,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 18:42:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:49,506 INFO L225 Difference]: With dead ends: 1724 [2024-11-08 18:42:49,507 INFO L226 Difference]: Without dead ends: 807 [2024-11-08 18:42:49,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:42:49,519 INFO L432 NwaCegarLoop]: 1593 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:49,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-08 18:42:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-08 18:42:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-11-08 18:42:49,616 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-11-08 18:42:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:49,617 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-11-08 18:42:49,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-11-08 18:42:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 18:42:49,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:49,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:49,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:42:49,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:49,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1342787886, now seen corresponding path program 1 times [2024-11-08 18:42:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:49,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149893057] [2024-11-08 18:42:49,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149893057] [2024-11-08 18:42:49,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149893057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:49,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:42:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966039954] [2024-11-08 18:42:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:49,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:42:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:42:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:49,840 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:49,944 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-11-08 18:42:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:42:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 18:42:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:49,949 INFO L225 Difference]: With dead ends: 873 [2024-11-08 18:42:49,949 INFO L226 Difference]: Without dead ends: 838 [2024-11-08 18:42:49,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:49,951 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 47 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:49,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6058 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:42:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-08 18:42:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-11-08 18:42:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-11-08 18:42:49,977 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-11-08 18:42:49,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:49,977 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-11-08 18:42:49,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-11-08 18:42:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 18:42:49,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:49,979 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:49,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:42:49,979 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:49,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1791292134, now seen corresponding path program 1 times [2024-11-08 18:42:49,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:49,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946242824] [2024-11-08 18:42:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946242824] [2024-11-08 18:42:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946242824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:50,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:50,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:42:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294308757] [2024-11-08 18:42:50,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:50,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:42:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:42:50,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:50,125 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:50,324 INFO L93 Difference]: Finished difference Result 993 states and 1797 transitions. [2024-11-08 18:42:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:42:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-08 18:42:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:50,330 INFO L225 Difference]: With dead ends: 993 [2024-11-08 18:42:50,331 INFO L226 Difference]: Without dead ends: 962 [2024-11-08 18:42:50,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:42:50,337 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 4593 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:50,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4593 Valid, 1875 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:42:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-08 18:42:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 836. [2024-11-08 18:42:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 834 states have (on average 1.8633093525179856) internal successors, (1554), 835 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1554 transitions. [2024-11-08 18:42:50,372 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1554 transitions. Word has length 36 [2024-11-08 18:42:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:50,376 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1554 transitions. [2024-11-08 18:42:50,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1554 transitions. [2024-11-08 18:42:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 18:42:50,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:50,378 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:50,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:42:50,378 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:50,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash -565556406, now seen corresponding path program 1 times [2024-11-08 18:42:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088581665] [2024-11-08 18:42:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:50,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088581665] [2024-11-08 18:42:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088581665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:50,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:50,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692192420] [2024-11-08 18:42:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:50,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:42:50,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:42:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:50,531 INFO L87 Difference]: Start difference. First operand 836 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:50,575 INFO L93 Difference]: Finished difference Result 945 states and 1721 transitions. [2024-11-08 18:42:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:42:50,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 18:42:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:50,580 INFO L225 Difference]: With dead ends: 945 [2024-11-08 18:42:50,580 INFO L226 Difference]: Without dead ends: 885 [2024-11-08 18:42:50,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:50,582 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:50,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1550 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-08 18:42:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-11-08 18:42:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8433598183881952) internal successors, (1624), 882 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1624 transitions. [2024-11-08 18:42:50,616 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1624 transitions. Word has length 38 [2024-11-08 18:42:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:50,616 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1624 transitions. [2024-11-08 18:42:50,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1624 transitions. [2024-11-08 18:42:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 18:42:50,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:50,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:50,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:42:50,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:50,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash -499062894, now seen corresponding path program 1 times [2024-11-08 18:42:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167753027] [2024-11-08 18:42:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:50,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:50,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167753027] [2024-11-08 18:42:50,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167753027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:50,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:50,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:42:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329814507] [2024-11-08 18:42:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:50,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:42:50,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:42:50,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:50,944 INFO L87 Difference]: Start difference. First operand 883 states and 1624 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:51,085 INFO L93 Difference]: Finished difference Result 992 states and 1788 transitions. [2024-11-08 18:42:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:42:51,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 18:42:51,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:51,090 INFO L225 Difference]: With dead ends: 992 [2024-11-08 18:42:51,090 INFO L226 Difference]: Without dead ends: 885 [2024-11-08 18:42:51,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:42:51,092 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 1475 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:51,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:42:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-08 18:42:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-11-08 18:42:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8410896708286038) internal successors, (1622), 882 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1622 transitions. [2024-11-08 18:42:51,122 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1622 transitions. Word has length 38 [2024-11-08 18:42:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:51,123 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1622 transitions. [2024-11-08 18:42:51,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1622 transitions. [2024-11-08 18:42:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 18:42:51,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:51,125 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:51,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:42:51,126 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:51,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1294196249, now seen corresponding path program 1 times [2024-11-08 18:42:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:51,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960160611] [2024-11-08 18:42:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:51,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960160611] [2024-11-08 18:42:51,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960160611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:51,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:51,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:42:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651592482] [2024-11-08 18:42:51,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:51,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:42:51,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:51,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:42:51,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:51,346 INFO L87 Difference]: Start difference. First operand 883 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:51,423 INFO L93 Difference]: Finished difference Result 891 states and 1631 transitions. [2024-11-08 18:42:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:42:51,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 18:42:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:51,428 INFO L225 Difference]: With dead ends: 891 [2024-11-08 18:42:51,428 INFO L226 Difference]: Without dead ends: 889 [2024-11-08 18:42:51,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:51,431 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:51,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-08 18:42:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2024-11-08 18:42:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 887 states have (on average 1.834272829763247) internal successors, (1627), 888 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1627 transitions. [2024-11-08 18:42:51,470 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1627 transitions. Word has length 39 [2024-11-08 18:42:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:51,471 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1627 transitions. [2024-11-08 18:42:51,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1627 transitions. [2024-11-08 18:42:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 18:42:51,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:51,473 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:51,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:42:51,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:51,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash -954024366, now seen corresponding path program 1 times [2024-11-08 18:42:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450086198] [2024-11-08 18:42:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:51,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:51,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450086198] [2024-11-08 18:42:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450086198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812796190] [2024-11-08 18:42:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:51,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:42:51,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:42:51,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:51,554 INFO L87 Difference]: Start difference. First operand 889 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:51,603 INFO L93 Difference]: Finished difference Result 1016 states and 1813 transitions. [2024-11-08 18:42:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:42:51,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-08 18:42:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:51,608 INFO L225 Difference]: With dead ends: 1016 [2024-11-08 18:42:51,609 INFO L226 Difference]: Without dead ends: 950 [2024-11-08 18:42:51,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:51,612 INFO L432 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:51,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-11-08 18:42:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 948. [2024-11-08 18:42:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8086680761099365) internal successors, (1711), 947 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1711 transitions. [2024-11-08 18:42:51,647 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1711 transitions. Word has length 40 [2024-11-08 18:42:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:51,648 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1711 transitions. [2024-11-08 18:42:51,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1711 transitions. [2024-11-08 18:42:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 18:42:51,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:51,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:51,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:42:51,650 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:51,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1125474130, now seen corresponding path program 1 times [2024-11-08 18:42:51,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:51,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143630549] [2024-11-08 18:42:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:51,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:51,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143630549] [2024-11-08 18:42:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143630549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:51,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:51,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650828589] [2024-11-08 18:42:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:51,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:42:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:42:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:51,736 INFO L87 Difference]: Start difference. First operand 948 states and 1711 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:51,787 INFO L93 Difference]: Finished difference Result 1262 states and 2163 transitions. [2024-11-08 18:42:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:42:51,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-08 18:42:51,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:51,792 INFO L225 Difference]: With dead ends: 1262 [2024-11-08 18:42:51,792 INFO L226 Difference]: Without dead ends: 1093 [2024-11-08 18:42:51,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:51,794 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:51,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2024-11-08 18:42:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1091. [2024-11-08 18:42:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1089 states have (on average 1.7529843893480257) internal successors, (1909), 1090 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1909 transitions. [2024-11-08 18:42:51,833 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1909 transitions. Word has length 40 [2024-11-08 18:42:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:51,834 INFO L471 AbstractCegarLoop]: Abstraction has 1091 states and 1909 transitions. [2024-11-08 18:42:51,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1909 transitions. [2024-11-08 18:42:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 18:42:51,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:51,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:51,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:42:51,835 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:51,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1388560302, now seen corresponding path program 1 times [2024-11-08 18:42:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:51,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324074014] [2024-11-08 18:42:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324074014] [2024-11-08 18:42:51,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324074014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:51,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:51,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431469149] [2024-11-08 18:42:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:51,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:42:51,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:42:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:51,932 INFO L87 Difference]: Start difference. First operand 1091 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:51,983 INFO L93 Difference]: Finished difference Result 1667 states and 2715 transitions. [2024-11-08 18:42:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:42:51,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-08 18:42:51,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:51,989 INFO L225 Difference]: With dead ends: 1667 [2024-11-08 18:42:51,990 INFO L226 Difference]: Without dead ends: 1355 [2024-11-08 18:42:51,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:51,992 INFO L432 NwaCegarLoop]: 1541 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:51,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1598 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-11-08 18:42:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1353. [2024-11-08 18:42:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1351 states have (on average 1.6706143597335308) internal successors, (2257), 1352 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2257 transitions. [2024-11-08 18:42:52,033 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2257 transitions. Word has length 40 [2024-11-08 18:42:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:52,033 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 2257 transitions. [2024-11-08 18:42:52,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2257 transitions. [2024-11-08 18:42:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:42:52,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:52,035 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:52,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:42:52,035 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:52,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash -612882793, now seen corresponding path program 1 times [2024-11-08 18:42:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:52,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582159422] [2024-11-08 18:42:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:52,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:42:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582159422] [2024-11-08 18:42:52,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582159422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:52,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:52,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:42:52,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586325469] [2024-11-08 18:42:52,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:52,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:42:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:52,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:42:52,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:52,208 INFO L87 Difference]: Start difference. First operand 1353 states and 2257 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:52,351 INFO L93 Difference]: Finished difference Result 3053 states and 4601 transitions. [2024-11-08 18:42:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:42:52,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:42:52,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:52,360 INFO L225 Difference]: With dead ends: 3053 [2024-11-08 18:42:52,361 INFO L226 Difference]: Without dead ends: 2635 [2024-11-08 18:42:52,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:42:52,363 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 3040 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:52,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3040 Valid, 3178 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:42:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2024-11-08 18:42:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 1849. [2024-11-08 18:42:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1847 states have (on average 1.5879805089334056) internal successors, (2933), 1848 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2933 transitions. [2024-11-08 18:42:52,424 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2933 transitions. Word has length 56 [2024-11-08 18:42:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:52,425 INFO L471 AbstractCegarLoop]: Abstraction has 1849 states and 2933 transitions. [2024-11-08 18:42:52,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2933 transitions. [2024-11-08 18:42:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:42:52,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:52,426 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:52,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:42:52,426 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:52,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1466615703, now seen corresponding path program 1 times [2024-11-08 18:42:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:52,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885960531] [2024-11-08 18:42:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:52,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:42:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885960531] [2024-11-08 18:42:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885960531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:52,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:52,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:42:52,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616866952] [2024-11-08 18:42:52,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:52,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:42:52,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:42:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:52,591 INFO L87 Difference]: Start difference. First operand 1849 states and 2933 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:52,734 INFO L93 Difference]: Finished difference Result 3625 states and 5385 transitions. [2024-11-08 18:42:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:42:52,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:42:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:52,744 INFO L225 Difference]: With dead ends: 3625 [2024-11-08 18:42:52,745 INFO L226 Difference]: Without dead ends: 3051 [2024-11-08 18:42:52,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:42:52,747 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 3044 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:52,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3152 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2024-11-08 18:42:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2629. [2024-11-08 18:42:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2627 states have (on average 1.5199847735059002) internal successors, (3993), 2628 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 3993 transitions. [2024-11-08 18:42:52,831 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 3993 transitions. Word has length 56 [2024-11-08 18:42:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:52,832 INFO L471 AbstractCegarLoop]: Abstraction has 2629 states and 3993 transitions. [2024-11-08 18:42:52,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:52,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 3993 transitions. [2024-11-08 18:42:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:42:52,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:52,833 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:52,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:42:52,833 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:52,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1047418729, now seen corresponding path program 1 times [2024-11-08 18:42:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:52,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591792390] [2024-11-08 18:42:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 18:42:52,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:52,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591792390] [2024-11-08 18:42:52,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591792390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:52,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:52,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:42:52,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045404984] [2024-11-08 18:42:52,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:52,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:42:52,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:52,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:42:52,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:42:52,959 INFO L87 Difference]: Start difference. First operand 2629 states and 3993 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:53,115 INFO L93 Difference]: Finished difference Result 4197 states and 6165 transitions. [2024-11-08 18:42:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:42:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:42:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:53,127 INFO L225 Difference]: With dead ends: 4197 [2024-11-08 18:42:53,127 INFO L226 Difference]: Without dead ends: 3623 [2024-11-08 18:42:53,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:42:53,130 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 3050 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:53,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3159 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-11-08 18:42:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3201. [2024-11-08 18:42:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4920287589871835) internal successors, (4773), 3200 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4773 transitions. [2024-11-08 18:42:53,235 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4773 transitions. Word has length 56 [2024-11-08 18:42:53,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:53,235 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4773 transitions. [2024-11-08 18:42:53,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4773 transitions. [2024-11-08 18:42:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:42:53,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:53,237 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:53,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:42:53,238 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:53,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:53,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1828342875, now seen corresponding path program 1 times [2024-11-08 18:42:53,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:53,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059033055] [2024-11-08 18:42:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:53,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:53,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:53,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059033055] [2024-11-08 18:42:53,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059033055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:53,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:53,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:53,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122750685] [2024-11-08 18:42:53,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:53,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:42:53,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:42:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:53,374 INFO L87 Difference]: Start difference. First operand 3201 states and 4773 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:53,453 INFO L93 Difference]: Finished difference Result 5625 states and 8083 transitions. [2024-11-08 18:42:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:42:53,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 18:42:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:53,464 INFO L225 Difference]: With dead ends: 5625 [2024-11-08 18:42:53,464 INFO L226 Difference]: Without dead ends: 3203 [2024-11-08 18:42:53,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:53,468 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:53,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:53,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2024-11-08 18:42:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3201. [2024-11-08 18:42:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4763988746483276) internal successors, (4723), 3200 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4723 transitions. [2024-11-08 18:42:53,567 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4723 transitions. Word has length 57 [2024-11-08 18:42:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:53,568 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4723 transitions. [2024-11-08 18:42:53,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4723 transitions. [2024-11-08 18:42:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:42:53,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:53,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:53,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:42:53,570 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:53,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash -680790321, now seen corresponding path program 1 times [2024-11-08 18:42:53,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:53,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30112211] [2024-11-08 18:42:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:53,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:53,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30112211] [2024-11-08 18:42:53,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30112211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:53,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:53,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:53,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539935717] [2024-11-08 18:42:53,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:53,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:42:53,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:53,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:42:53,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:53,665 INFO L87 Difference]: Start difference. First operand 3201 states and 4723 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:53,717 INFO L93 Difference]: Finished difference Result 4157 states and 6020 transitions. [2024-11-08 18:42:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:42:53,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 18:42:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:53,723 INFO L225 Difference]: With dead ends: 4157 [2024-11-08 18:42:53,723 INFO L226 Difference]: Without dead ends: 1735 [2024-11-08 18:42:53,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:53,726 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:53,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-08 18:42:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1726. [2024-11-08 18:42:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.58584686774942) internal successors, (2734), 1725 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2734 transitions. [2024-11-08 18:42:53,775 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2734 transitions. Word has length 58 [2024-11-08 18:42:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:53,775 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2734 transitions. [2024-11-08 18:42:53,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2734 transitions. [2024-11-08 18:42:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:42:53,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:53,776 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:53,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:42:53,777 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:53,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2146393385, now seen corresponding path program 1 times [2024-11-08 18:42:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:53,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029841269] [2024-11-08 18:42:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:53,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:53,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:53,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029841269] [2024-11-08 18:42:53,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029841269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:53,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:53,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:53,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467059557] [2024-11-08 18:42:53,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:53,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:42:53,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:42:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:53,870 INFO L87 Difference]: Start difference. First operand 1726 states and 2734 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:42:53,977 INFO L93 Difference]: Finished difference Result 2198 states and 3366 transitions. [2024-11-08 18:42:53,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:42:53,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 18:42:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:42:53,982 INFO L225 Difference]: With dead ends: 2198 [2024-11-08 18:42:53,982 INFO L226 Difference]: Without dead ends: 1260 [2024-11-08 18:42:53,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:42:53,984 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:42:53,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:42:53,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-11-08 18:42:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2024-11-08 18:42:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1256 states have (on average 1.6679936305732483) internal successors, (2095), 1257 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2095 transitions. [2024-11-08 18:42:54,026 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2095 transitions. Word has length 59 [2024-11-08 18:42:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:42:54,027 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 2095 transitions. [2024-11-08 18:42:54,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:42:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2095 transitions. [2024-11-08 18:42:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:42:54,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:42:54,028 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:42:54,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:42:54,029 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:42:54,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:42:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 485917252, now seen corresponding path program 1 times [2024-11-08 18:42:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:42:54,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881904225] [2024-11-08 18:42:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:42:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:42:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:42:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:42:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:42:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881904225] [2024-11-08 18:42:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881904225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:42:54,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:42:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:42:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523571926] [2024-11-08 18:42:54,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:42:54,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:42:54,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:42:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:42:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:42:54,175 INFO L87 Difference]: Start difference. First operand 1258 states and 2095 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:43:02,056 INFO L93 Difference]: Finished difference Result 3513 states and 6404 transitions. [2024-11-08 18:43:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:43:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:43:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:43:02,073 INFO L225 Difference]: With dead ends: 3513 [2024-11-08 18:43:02,073 INFO L226 Difference]: Without dead ends: 2760 [2024-11-08 18:43:02,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:43:02,078 INFO L432 NwaCegarLoop]: 763 mSDtfsCounter, 2321 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:43:02,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 781 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-08 18:43:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2024-11-08 18:43:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2760. [2024-11-08 18:43:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2758 states have (on average 1.5304568527918783) internal successors, (4221), 2759 states have internal predecessors, (4221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4221 transitions. [2024-11-08 18:43:02,163 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4221 transitions. Word has length 60 [2024-11-08 18:43:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:43:02,163 INFO L471 AbstractCegarLoop]: Abstraction has 2760 states and 4221 transitions. [2024-11-08 18:43:02,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4221 transitions. [2024-11-08 18:43:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:43:02,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:43:02,165 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:02,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:43:02,166 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:43:02,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -486995831, now seen corresponding path program 1 times [2024-11-08 18:43:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84209846] [2024-11-08 18:43:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:43:02,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:02,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84209846] [2024-11-08 18:43:02,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84209846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:02,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976558809] [2024-11-08 18:43:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:02,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:02,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:02,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:02,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:43:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:02,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 18:43:02,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:43:02,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:43:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:43:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976558809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:43:03,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:43:03,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2024-11-08 18:43:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656288797] [2024-11-08 18:43:03,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:43:03,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:43:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:03,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:43:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:43:03,125 INFO L87 Difference]: Start difference. First operand 2760 states and 4221 transitions. Second operand has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:43:03,298 INFO L93 Difference]: Finished difference Result 3877 states and 5670 transitions. [2024-11-08 18:43:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:43:03,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 18:43:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:43:03,316 INFO L225 Difference]: With dead ends: 3877 [2024-11-08 18:43:03,316 INFO L226 Difference]: Without dead ends: 3407 [2024-11-08 18:43:03,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:43:03,318 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 2998 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:43:03,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2998 Valid, 4703 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:43:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2024-11-08 18:43:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3343. [2024-11-08 18:43:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.4756061059563006) internal successors, (4930), 3342 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 4930 transitions. [2024-11-08 18:43:03,420 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 4930 transitions. Word has length 61 [2024-11-08 18:43:03,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:43:03,421 INFO L471 AbstractCegarLoop]: Abstraction has 3343 states and 4930 transitions. [2024-11-08 18:43:03,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 4930 transitions. [2024-11-08 18:43:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:43:03,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:43:03,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:03,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:43:03,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:43:03,623 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:43:03,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash -980069013, now seen corresponding path program 1 times [2024-11-08 18:43:03,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:03,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309464658] [2024-11-08 18:43:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:03,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:04,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:04,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309464658] [2024-11-08 18:43:04,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309464658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:04,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065780999] [2024-11-08 18:43:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:04,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:04,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:04,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:04,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:43:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:04,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:43:04,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:05,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:43:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:06,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065780999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:43:06,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:43:06,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-08 18:43:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548307948] [2024-11-08 18:43:06,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:43:06,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:43:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:43:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:43:06,123 INFO L87 Difference]: Start difference. First operand 3343 states and 4930 transitions. Second operand has 25 states, 25 states have (on average 6.16) internal successors, (154), 24 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:43:08,446 INFO L93 Difference]: Finished difference Result 7272 states and 9922 transitions. [2024-11-08 18:43:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 18:43:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.16) internal successors, (154), 24 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:43:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:43:08,459 INFO L225 Difference]: With dead ends: 7272 [2024-11-08 18:43:08,459 INFO L226 Difference]: Without dead ends: 6241 [2024-11-08 18:43:08,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=629, Invalid=2233, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 18:43:08,463 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 22976 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22976 SdHoareTripleChecker+Valid, 6458 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:43:08,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22976 Valid, 6458 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:43:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2024-11-08 18:43:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6167. [2024-11-08 18:43:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6167 states, 6165 states have (on average 1.3602595296025952) internal successors, (8386), 6166 states have internal predecessors, (8386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6167 states to 6167 states and 8386 transitions. [2024-11-08 18:43:08,677 INFO L78 Accepts]: Start accepts. Automaton has 6167 states and 8386 transitions. Word has length 62 [2024-11-08 18:43:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:43:08,678 INFO L471 AbstractCegarLoop]: Abstraction has 6167 states and 8386 transitions. [2024-11-08 18:43:08,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.16) internal successors, (154), 24 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 6167 states and 8386 transitions. [2024-11-08 18:43:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:43:08,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:43:08,679 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:08,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:43:08,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:43:08,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:43:08,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1773038371, now seen corresponding path program 1 times [2024-11-08 18:43:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998624327] [2024-11-08 18:43:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:09,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998624327] [2024-11-08 18:43:09,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998624327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368825604] [2024-11-08 18:43:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:09,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:09,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:09,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:43:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:09,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:43:09,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:10,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:43:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:11,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368825604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:43:11,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:43:11,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-08 18:43:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236178644] [2024-11-08 18:43:11,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:43:11,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 18:43:11,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 18:43:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:43:11,763 INFO L87 Difference]: Start difference. First operand 6167 states and 8386 transitions. Second operand has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:43:14,727 INFO L93 Difference]: Finished difference Result 12057 states and 15702 transitions. [2024-11-08 18:43:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 18:43:14,728 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:43:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:43:14,744 INFO L225 Difference]: With dead ends: 12057 [2024-11-08 18:43:14,745 INFO L226 Difference]: Without dead ends: 8613 [2024-11-08 18:43:14,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=723, Invalid=3059, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 18:43:14,751 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 21779 mSDsluCounter, 15133 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21779 SdHoareTripleChecker+Valid, 16628 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:43:14,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21779 Valid, 16628 Invalid, 807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:43:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8613 states. [2024-11-08 18:43:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8613 to 6747. [2024-11-08 18:43:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6747 states, 6745 states have (on average 1.339362490733877) internal successors, (9034), 6746 states have internal predecessors, (9034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6747 states to 6747 states and 9034 transitions. [2024-11-08 18:43:15,094 INFO L78 Accepts]: Start accepts. Automaton has 6747 states and 9034 transitions. Word has length 62 [2024-11-08 18:43:15,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:43:15,094 INFO L471 AbstractCegarLoop]: Abstraction has 6747 states and 9034 transitions. [2024-11-08 18:43:15,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6747 states and 9034 transitions. [2024-11-08 18:43:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:43:15,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:43:15,095 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:15,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:43:15,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:15,297 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:43:15,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:15,297 INFO L85 PathProgramCache]: Analyzing trace with hash 101554535, now seen corresponding path program 1 times [2024-11-08 18:43:15,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:15,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599889522] [2024-11-08 18:43:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:15,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599889522] [2024-11-08 18:43:16,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599889522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181838705] [2024-11-08 18:43:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:16,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:16,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:16,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:16,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:43:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:16,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 18:43:16,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:19,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:43:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:22,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181838705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:43:22,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:43:22,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 42 [2024-11-08 18:43:22,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975504819] [2024-11-08 18:43:22,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:43:22,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 18:43:22,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 18:43:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:43:22,995 INFO L87 Difference]: Start difference. First operand 6747 states and 9034 transitions. Second operand has 42 states, 42 states have (on average 3.857142857142857) internal successors, (162), 42 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:43:33,447 INFO L93 Difference]: Finished difference Result 12755 states and 16386 transitions. [2024-11-08 18:43:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-08 18:43:33,448 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.857142857142857) internal successors, (162), 42 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 18:43:33,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:43:33,465 INFO L225 Difference]: With dead ends: 12755 [2024-11-08 18:43:33,465 INFO L226 Difference]: Without dead ends: 9556 [2024-11-08 18:43:33,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1909, Invalid=7403, Unknown=0, NotChecked=0, Total=9312 [2024-11-08 18:43:33,472 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 19189 mSDsluCounter, 19724 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19189 SdHoareTripleChecker+Valid, 21231 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:43:33,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19189 Valid, 21231 Invalid, 1244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 18:43:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9556 states. [2024-11-08 18:43:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9556 to 8088. [2024-11-08 18:43:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8088 states, 8086 states have (on average 1.3142468464011872) internal successors, (10627), 8087 states have internal predecessors, (10627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8088 states to 8088 states and 10627 transitions. [2024-11-08 18:43:33,856 INFO L78 Accepts]: Start accepts. Automaton has 8088 states and 10627 transitions. Word has length 63 [2024-11-08 18:43:33,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:43:33,856 INFO L471 AbstractCegarLoop]: Abstraction has 8088 states and 10627 transitions. [2024-11-08 18:43:33,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.857142857142857) internal successors, (162), 42 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:33,857 INFO L276 IsEmpty]: Start isEmpty. Operand 8088 states and 10627 transitions. [2024-11-08 18:43:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:43:33,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:43:33,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:33,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:43:34,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:34,062 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:43:34,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1359923071, now seen corresponding path program 1 times [2024-11-08 18:43:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:34,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316395365] [2024-11-08 18:43:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:34,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316395365] [2024-11-08 18:43:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316395365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980023158] [2024-11-08 18:43:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:35,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:35,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:35,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:35,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:43:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:35,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:43:35,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:36,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:43:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:37,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980023158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:43:37,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:43:37,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 34 [2024-11-08 18:43:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813002181] [2024-11-08 18:43:37,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:43:37,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 18:43:37,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 18:43:37,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 18:43:37,444 INFO L87 Difference]: Start difference. First operand 8088 states and 10627 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:43:42,247 INFO L93 Difference]: Finished difference Result 11321 states and 14518 transitions. [2024-11-08 18:43:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:43:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-08 18:43:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:43:42,261 INFO L225 Difference]: With dead ends: 11321 [2024-11-08 18:43:42,261 INFO L226 Difference]: Without dead ends: 8425 [2024-11-08 18:43:42,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=981, Invalid=3849, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 18:43:42,268 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 13028 mSDsluCounter, 18540 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13028 SdHoareTripleChecker+Valid, 20080 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:43:42,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13028 Valid, 20080 Invalid, 1300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 18:43:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8425 states. [2024-11-08 18:43:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8425 to 6972. [2024-11-08 18:43:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6970 states have (on average 1.3282639885222383) internal successors, (9258), 6971 states have internal predecessors, (9258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 9258 transitions. [2024-11-08 18:43:42,615 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 9258 transitions. Word has length 65 [2024-11-08 18:43:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:43:42,616 INFO L471 AbstractCegarLoop]: Abstraction has 6972 states and 9258 transitions. [2024-11-08 18:43:42,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:42,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 9258 transitions. [2024-11-08 18:43:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:43:42,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:43:42,618 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:42,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:43:42,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:42,824 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:43:42,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:42,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1616412163, now seen corresponding path program 1 times [2024-11-08 18:43:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473811168] [2024-11-08 18:43:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:42,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:44,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473811168] [2024-11-08 18:43:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473811168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325349697] [2024-11-08 18:43:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:44,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:44,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:44,055 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:44,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:43:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:44,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:43:44,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 34 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:45,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:43:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:47,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325349697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:43:47,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:43:47,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2024-11-08 18:43:47,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706015523] [2024-11-08 18:43:47,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:43:47,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:43:47,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:43:47,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:43:47,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:43:47,536 INFO L87 Difference]: Start difference. First operand 6972 states and 9258 transitions. Second operand has 35 states, 35 states have (on average 7.914285714285715) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:43:57,284 INFO L93 Difference]: Finished difference Result 14263 states and 18144 transitions. [2024-11-08 18:43:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-08 18:43:57,285 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.914285714285715) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:43:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:43:57,300 INFO L225 Difference]: With dead ends: 14263 [2024-11-08 18:43:57,300 INFO L226 Difference]: Without dead ends: 10407 [2024-11-08 18:43:57,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5894 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=3283, Invalid=16457, Unknown=0, NotChecked=0, Total=19740 [2024-11-08 18:43:57,311 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 25500 mSDsluCounter, 16366 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25500 SdHoareTripleChecker+Valid, 17919 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:43:57,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25500 Valid, 17919 Invalid, 1890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 18:43:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2024-11-08 18:43:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 9831. [2024-11-08 18:43:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9831 states, 9829 states have (on average 1.289144368704853) internal successors, (12671), 9830 states have internal predecessors, (12671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9831 states to 9831 states and 12671 transitions. [2024-11-08 18:43:57,876 INFO L78 Accepts]: Start accepts. Automaton has 9831 states and 12671 transitions. Word has length 103 [2024-11-08 18:43:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:43:57,876 INFO L471 AbstractCegarLoop]: Abstraction has 9831 states and 12671 transitions. [2024-11-08 18:43:57,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.914285714285715) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:43:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 9831 states and 12671 transitions. [2024-11-08 18:43:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:43:57,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:43:57,879 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:43:57,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:43:58,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:58,080 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:43:58,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:43:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash -690970567, now seen corresponding path program 1 times [2024-11-08 18:43:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:43:58,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106509937] [2024-11-08 18:43:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:43:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:43:59,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106509937] [2024-11-08 18:43:59,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106509937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792737555] [2024-11-08 18:43:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:43:59,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:59,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:59,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:59,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:43:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:59,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 18:43:59,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:44:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 18:44:04,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:44:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 35 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:44:10,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792737555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:44:10,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:44:10,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 26] total 65 [2024-11-08 18:44:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161857915] [2024-11-08 18:44:10,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:44:10,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 18:44:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:44:10,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 18:44:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=3768, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 18:44:10,927 INFO L87 Difference]: Start difference. First operand 9831 states and 12671 transitions. Second operand has 65 states, 65 states have (on average 4.230769230769231) internal successors, (275), 65 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:45:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:45:41,866 INFO L93 Difference]: Finished difference Result 19137 states and 24025 transitions. [2024-11-08 18:45:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-11-08 18:45:41,867 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.230769230769231) internal successors, (275), 65 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 18:45:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:45:41,882 INFO L225 Difference]: With dead ends: 19137 [2024-11-08 18:45:41,882 INFO L226 Difference]: Without dead ends: 15805 [2024-11-08 18:45:41,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25120 ImplicationChecksByTransitivity, 87.2s TimeCoverageRelationStatistics Valid=9731, Invalid=64525, Unknown=0, NotChecked=0, Total=74256 [2024-11-08 18:45:41,896 INFO L432 NwaCegarLoop]: 1645 mSDtfsCounter, 23928 mSDsluCounter, 41794 mSDsCounter, 0 mSdLazyCounter, 6152 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23928 SdHoareTripleChecker+Valid, 43439 SdHoareTripleChecker+Invalid, 6382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 6152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:45:41,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23928 Valid, 43439 Invalid, 6382 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [230 Valid, 6152 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-08 18:45:41,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15805 states. [2024-11-08 18:45:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15805 to 13500. [2024-11-08 18:45:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13500 states, 13498 states have (on average 1.2674470291895095) internal successors, (17108), 13499 states have internal predecessors, (17108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:45:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13500 states to 13500 states and 17108 transitions. [2024-11-08 18:45:42,983 INFO L78 Accepts]: Start accepts. Automaton has 13500 states and 17108 transitions. Word has length 104 [2024-11-08 18:45:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:45:42,984 INFO L471 AbstractCegarLoop]: Abstraction has 13500 states and 17108 transitions. [2024-11-08 18:45:42,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.230769230769231) internal successors, (275), 65 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:45:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 13500 states and 17108 transitions. [2024-11-08 18:45:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:45:42,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:45:42,987 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:45:43,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:45:43,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:45:43,192 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:45:43,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:45:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2066560961, now seen corresponding path program 1 times [2024-11-08 18:45:43,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:45:43,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356994317] [2024-11-08 18:45:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:45:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:45:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:45:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:45:44,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:45:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356994317] [2024-11-08 18:45:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356994317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:45:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913485611] [2024-11-08 18:45:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:45:44,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:45:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:45:44,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:45:44,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:45:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:45:45,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:45:45,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:45:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:45:48,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:45:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:45:52,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913485611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:45:52,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:45:52,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 56 [2024-11-08 18:45:52,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735773061] [2024-11-08 18:45:52,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:45:52,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 18:45:52,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:45:52,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 18:45:52,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2867, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 18:45:52,503 INFO L87 Difference]: Start difference. First operand 13500 states and 17108 transitions. Second operand has 56 states, 56 states have (on average 5.267857142857143) internal successors, (295), 56 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:46:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:46:27,161 INFO L93 Difference]: Finished difference Result 26208 states and 32308 transitions. [2024-11-08 18:46:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-08 18:46:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.267857142857143) internal successors, (295), 56 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-08 18:46:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:46:27,177 INFO L225 Difference]: With dead ends: 26208 [2024-11-08 18:46:27,177 INFO L226 Difference]: Without dead ends: 21625 [2024-11-08 18:46:27,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7658 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=4668, Invalid=23724, Unknown=0, NotChecked=0, Total=28392 [2024-11-08 18:46:27,184 INFO L432 NwaCegarLoop]: 1616 mSDtfsCounter, 28100 mSDsluCounter, 39773 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28100 SdHoareTripleChecker+Valid, 41389 SdHoareTripleChecker+Invalid, 3642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:46:27,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28100 Valid, 41389 Invalid, 3642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [208 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-08 18:46:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21625 states. [2024-11-08 18:46:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21625 to 15694. [2024-11-08 18:46:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15694 states, 15692 states have (on average 1.2533137904664797) internal successors, (19667), 15693 states have internal predecessors, (19667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:46:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15694 states to 15694 states and 19667 transitions. [2024-11-08 18:46:28,424 INFO L78 Accepts]: Start accepts. Automaton has 15694 states and 19667 transitions. Word has length 105 [2024-11-08 18:46:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:46:28,425 INFO L471 AbstractCegarLoop]: Abstraction has 15694 states and 19667 transitions. [2024-11-08 18:46:28,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.267857142857143) internal successors, (295), 56 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:46:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 15694 states and 19667 transitions. [2024-11-08 18:46:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:46:28,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:46:28,430 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:46:28,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:46:28,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:46:28,631 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:46:28,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:46:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1484836069, now seen corresponding path program 1 times [2024-11-08 18:46:28,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:46:28,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118105846] [2024-11-08 18:46:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:46:28,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:46:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:46:30,764 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:46:30,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:46:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118105846] [2024-11-08 18:46:30,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118105846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:46:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605720209] [2024-11-08 18:46:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:46:30,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:46:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:46:30,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:46:30,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58803318-b86e-4a24-bec1-ef30346a313e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:46:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:46:30,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 18:46:30,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:46:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:46:36,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:47:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:47:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605720209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:47:07,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:47:07,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 28] total 75 [2024-11-08 18:47:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386370249] [2024-11-08 18:47:07,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:47:07,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-08 18:47:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:47:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-08 18:47:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=5005, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 18:47:07,248 INFO L87 Difference]: Start difference. First operand 15694 states and 19667 transitions. Second operand has 75 states, 75 states have (on average 3.6666666666666665) internal successors, (275), 75 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)