./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU --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 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:06:54,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:06:54,388 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:06:54,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:06:54,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:06:54,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:06:54,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:06:54,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:06:54,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:06:54,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:06:54,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:06:54,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:06:54,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:06:54,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:06:54,438 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:06:54,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:06:54,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:06:54,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:06:54,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:06:54,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:06:54,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:06:54,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:06:54,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:06:54,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:06:54,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:06:54,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:06:54,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:06:54,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:06:54,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:06:54,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:06:54,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:06:54,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:06:54,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:54,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:06:54,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:06:54,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:06:54,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:06:54,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:06:54,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:06:54,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:06:54,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:06:54,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:06:54,448 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_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 [2024-10-31 22:06:54,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:06:54,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:06:54,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:06:54,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:06:54,778 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:06:54,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c Unable to find full path for "g++" [2024-10-31 22:06:56,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:06:57,335 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:06:57,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2024-10-31 22:06:57,353 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/data/b65ea727a/f3945a61c13f4fe88c12900265e1a265/FLAG7bc8636ef [2024-10-31 22:06:57,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/data/b65ea727a/f3945a61c13f4fe88c12900265e1a265 [2024-10-31 22:06:57,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:06:57,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:06:57,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:57,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:06:57,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:06:57,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:57" (1/1) ... [2024-10-31 22:06:57,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cbb0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:57, skipping insertion in model container [2024-10-31 22:06:57,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:57" (1/1) ... [2024-10-31 22:06:57,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:06:58,028 WARN L251 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_c4526766-95c3-4068-928b-76f2243bcdcb/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2024-10-31 22:06:58,091 WARN L251 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_c4526766-95c3-4068-928b-76f2243bcdcb/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2024-10-31 22:06:58,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:58,172 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:06:58,188 WARN L251 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_c4526766-95c3-4068-928b-76f2243bcdcb/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2024-10-31 22:06:58,212 WARN L251 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_c4526766-95c3-4068-928b-76f2243bcdcb/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2024-10-31 22:06:58,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:58,326 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:06:58,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58 WrapperNode [2024-10-31 22:06:58,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:58,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:58,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:06:58,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:06:58,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,403 INFO L138 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 603 [2024-10-31 22:06:58,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:58,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:06:58,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:06:58,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:06:58,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,465 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]. [2024-10-31 22:06:58,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:06:58,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:06:58,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:06:58,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:06:58,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (1/1) ... [2024-10-31 22:06:58,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:58,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:58,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:58,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:06:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:06:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:06:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:06:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-31 22:06:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-31 22:06:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-31 22:06:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-31 22:06:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-31 22:06:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-31 22:06:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-31 22:06:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-31 22:06:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-31 22:06:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-31 22:06:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-31 22:06:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-31 22:06:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:06:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-31 22:06:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-31 22:06:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:06:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:06:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-31 22:06:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-31 22:06:58,821 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:06:58,826 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:06:59,828 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-10-31 22:06:59,829 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:06:59,864 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:06:59,865 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-31 22:06:59,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:59 BoogieIcfgContainer [2024-10-31 22:06:59,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:06:59,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:06:59,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:06:59,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:06:59,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:06:57" (1/3) ... [2024-10-31 22:06:59,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edcbd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:59, skipping insertion in model container [2024-10-31 22:06:59,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:58" (2/3) ... [2024-10-31 22:06:59,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edcbd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:59, skipping insertion in model container [2024-10-31 22:06:59,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:59" (3/3) ... [2024-10-31 22:06:59,879 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2024-10-31 22:06:59,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:06:59,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:07:00,010 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:00,018 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;@7cba5a55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:00,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:07:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 223 states have (on average 1.5829596412556053) internal successors, (353), 228 states have internal predecessors, (353), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-31 22:07:00,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-31 22:07:00,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:00,043 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] [2024-10-31 22:07:00,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:00,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1763153476, now seen corresponding path program 1 times [2024-10-31 22:07:00,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:00,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914875591] [2024-10-31 22:07:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:07:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:00,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914875591] [2024-10-31 22:07:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914875591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:00,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479426248] [2024-10-31 22:07:00,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:00,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:00,510 INFO L87 Difference]: Start difference. First operand has 259 states, 223 states have (on average 1.5829596412556053) internal successors, (353), 228 states have internal predecessors, (353), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:07:01,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:01,305 INFO L93 Difference]: Finished difference Result 571 states and 886 transitions. [2024-10-31 22:07:01,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:01,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-10-31 22:07:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:01,330 INFO L225 Difference]: With dead ends: 571 [2024-10-31 22:07:01,331 INFO L226 Difference]: Without dead ends: 319 [2024-10-31 22:07:01,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:01,345 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 468 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:01,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 542 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:07:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-31 22:07:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 313. [2024-10-31 22:07:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 272 states have (on average 1.4558823529411764) internal successors, (396), 276 states have internal predecessors, (396), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2024-10-31 22:07:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 456 transitions. [2024-10-31 22:07:01,467 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 456 transitions. Word has length 44 [2024-10-31 22:07:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:01,468 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 456 transitions. [2024-10-31 22:07:01,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:07:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 456 transitions. [2024-10-31 22:07:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-31 22:07:01,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:01,474 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] [2024-10-31 22:07:01,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:07:01,475 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:01,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1514701925, now seen corresponding path program 1 times [2024-10-31 22:07:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909406497] [2024-10-31 22:07:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:01,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:01,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-31 22:07:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:01,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909406497] [2024-10-31 22:07:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909406497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:01,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:01,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325723175] [2024-10-31 22:07:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:01,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:01,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:01,703 INFO L87 Difference]: Start difference. First operand 313 states and 456 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:07:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:02,429 INFO L93 Difference]: Finished difference Result 561 states and 796 transitions. [2024-10-31 22:07:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-10-31 22:07:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:02,435 INFO L225 Difference]: With dead ends: 561 [2024-10-31 22:07:02,435 INFO L226 Difference]: Without dead ends: 437 [2024-10-31 22:07:02,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:02,438 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 209 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:02,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 709 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:07:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-10-31 22:07:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 380. [2024-10-31 22:07:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 333 states have (on average 1.4414414414414414) internal successors, (480), 337 states have internal predecessors, (480), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2024-10-31 22:07:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 546 transitions. [2024-10-31 22:07:02,513 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 546 transitions. Word has length 45 [2024-10-31 22:07:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:02,514 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 546 transitions. [2024-10-31 22:07:02,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:07:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 546 transitions. [2024-10-31 22:07:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-31 22:07:02,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:02,518 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] [2024-10-31 22:07:02,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:07:02,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:02,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash 230344464, now seen corresponding path program 1 times [2024-10-31 22:07:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478950148] [2024-10-31 22:07:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:02,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:02,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-31 22:07:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:02,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:02,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478950148] [2024-10-31 22:07:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478950148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:02,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:02,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:02,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395863226] [2024-10-31 22:07:02,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:02,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:02,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:02,622 INFO L87 Difference]: Start difference. First operand 380 states and 546 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:07:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:03,174 INFO L93 Difference]: Finished difference Result 788 states and 1105 transitions. [2024-10-31 22:07:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-10-31 22:07:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:03,185 INFO L225 Difference]: With dead ends: 788 [2024-10-31 22:07:03,186 INFO L226 Difference]: Without dead ends: 597 [2024-10-31 22:07:03,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:03,189 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 478 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:03,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 533 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:07:03,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-10-31 22:07:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 545. [2024-10-31 22:07:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 479 states have (on average 1.3987473903966596) internal successors, (670), 486 states have internal predecessors, (670), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2024-10-31 22:07:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 764 transitions. [2024-10-31 22:07:03,258 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 764 transitions. Word has length 45 [2024-10-31 22:07:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:03,259 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 764 transitions. [2024-10-31 22:07:03,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:07:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 764 transitions. [2024-10-31 22:07:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:07:03,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:03,264 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-10-31 22:07:03,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:07:03,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:03,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:03,266 INFO L85 PathProgramCache]: Analyzing trace with hash 781815284, now seen corresponding path program 1 times [2024-10-31 22:07:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816886924] [2024-10-31 22:07:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:03,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:03,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:07:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:03,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:07:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:07:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816886924] [2024-10-31 22:07:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816886924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:03,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925033431] [2024-10-31 22:07:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:03,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:03,434 INFO L87 Difference]: Start difference. First operand 545 states and 764 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:07:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:03,965 INFO L93 Difference]: Finished difference Result 1129 states and 1549 transitions. [2024-10-31 22:07:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-10-31 22:07:03,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:03,974 INFO L225 Difference]: With dead ends: 1129 [2024-10-31 22:07:03,974 INFO L226 Difference]: Without dead ends: 773 [2024-10-31 22:07:03,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:03,980 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 193 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:03,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 759 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:07:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-10-31 22:07:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 735. [2024-10-31 22:07:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 645 states have (on average 1.3488372093023255) internal successors, (870), 654 states have internal predecessors, (870), 56 states have call successors, (56), 29 states have call predecessors, (56), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2024-10-31 22:07:04,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1002 transitions. [2024-10-31 22:07:04,062 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1002 transitions. Word has length 62 [2024-10-31 22:07:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:04,064 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1002 transitions. [2024-10-31 22:07:04,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:07:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1002 transitions. [2024-10-31 22:07:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 22:07:04,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:04,071 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:04,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:07:04,073 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:04,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:04,074 INFO L85 PathProgramCache]: Analyzing trace with hash 140663655, now seen corresponding path program 1 times [2024-10-31 22:07:04,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:04,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052742369] [2024-10-31 22:07:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:07:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:07:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-31 22:07:04,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:04,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052742369] [2024-10-31 22:07:04,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052742369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:04,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:04,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:04,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023273828] [2024-10-31 22:07:04,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:04,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:04,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:04,201 INFO L87 Difference]: Start difference. First operand 735 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:07:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:04,680 INFO L93 Difference]: Finished difference Result 1388 states and 1855 transitions. [2024-10-31 22:07:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-10-31 22:07:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:04,689 INFO L225 Difference]: With dead ends: 1388 [2024-10-31 22:07:04,692 INFO L226 Difference]: Without dead ends: 934 [2024-10-31 22:07:04,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:04,695 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 465 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:04,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 532 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:07:04,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2024-10-31 22:07:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 879. [2024-10-31 22:07:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 773 states have (on average 1.3208279430789134) internal successors, (1021), 784 states have internal predecessors, (1021), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2024-10-31 22:07:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1175 transitions. [2024-10-31 22:07:04,774 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1175 transitions. Word has length 67 [2024-10-31 22:07:04,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:04,775 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1175 transitions. [2024-10-31 22:07:04,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:07:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1175 transitions. [2024-10-31 22:07:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-31 22:07:04,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:04,778 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:04,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:07:04,779 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:04,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1366170724, now seen corresponding path program 1 times [2024-10-31 22:07:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196385361] [2024-10-31 22:07:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:07:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:07:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:07:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:04,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196385361] [2024-10-31 22:07:04,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196385361] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:04,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477074184] [2024-10-31 22:07:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:04,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:04,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:04,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:04,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:07:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:05,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:07:05,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:05,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:07:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:07:05,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477074184] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:05,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:07:05,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-10-31 22:07:05,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134482631] [2024-10-31 22:07:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:05,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:05,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:07:05,399 INFO L87 Difference]: Start difference. First operand 879 states and 1175 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:07:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:05,653 INFO L93 Difference]: Finished difference Result 935 states and 1243 transitions. [2024-10-31 22:07:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-10-31 22:07:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:05,662 INFO L225 Difference]: With dead ends: 935 [2024-10-31 22:07:05,662 INFO L226 Difference]: Without dead ends: 932 [2024-10-31 22:07:05,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:07:05,667 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 645 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:05,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 456 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:07:05,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-10-31 22:07:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 878. [2024-10-31 22:07:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 773 states have (on average 1.3182406209573092) internal successors, (1019), 783 states have internal predecessors, (1019), 63 states have call successors, (63), 35 states have call predecessors, (63), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2024-10-31 22:07:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1172 transitions. [2024-10-31 22:07:05,795 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1172 transitions. Word has length 68 [2024-10-31 22:07:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:05,796 INFO L471 AbstractCegarLoop]: Abstraction has 878 states and 1172 transitions. [2024-10-31 22:07:05,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:07:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1172 transitions. [2024-10-31 22:07:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-31 22:07:05,801 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:05,801 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:05,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:07:06,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:07:06,002 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:06,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -599191478, now seen corresponding path program 1 times [2024-10-31 22:07:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129402076] [2024-10-31 22:07:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:06,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:06,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:07:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:06,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:07:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:07:06,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129402076] [2024-10-31 22:07:06,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129402076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097932783] [2024-10-31 22:07:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:06,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:06,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:06,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:07:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:06,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:07:06,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:06,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:07:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:07:06,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097932783] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:07:06,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:07:06,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-10-31 22:07:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408598679] [2024-10-31 22:07:06,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:07:06,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:07:06,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:06,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:07:06,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:07:06,921 INFO L87 Difference]: Start difference. First operand 878 states and 1172 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-31 22:07:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:08,715 INFO L93 Difference]: Finished difference Result 2385 states and 3160 transitions. [2024-10-31 22:07:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-31 22:07:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-10-31 22:07:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:08,727 INFO L225 Difference]: With dead ends: 2385 [2024-10-31 22:07:08,727 INFO L226 Difference]: Without dead ends: 1841 [2024-10-31 22:07:08,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-10-31 22:07:08,732 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 647 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:08,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 2538 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:07:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2024-10-31 22:07:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1241. [2024-10-31 22:07:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1097 states have (on average 1.293527803099362) internal successors, (1419), 1115 states have internal predecessors, (1419), 83 states have call successors, (83), 49 states have call predecessors, (83), 59 states have return successors, (124), 77 states have call predecessors, (124), 82 states have call successors, (124) [2024-10-31 22:07:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1626 transitions. [2024-10-31 22:07:08,846 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1626 transitions. Word has length 69 [2024-10-31 22:07:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:08,847 INFO L471 AbstractCegarLoop]: Abstraction has 1241 states and 1626 transitions. [2024-10-31 22:07:08,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-31 22:07:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1626 transitions. [2024-10-31 22:07:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-31 22:07:08,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:08,853 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-31 22:07:08,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:07:09,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:07:09,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:09,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash 755028000, now seen corresponding path program 1 times [2024-10-31 22:07:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:09,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206037787] [2024-10-31 22:07:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:07:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:07:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:07:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 22:07:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-31 22:07:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206037787] [2024-10-31 22:07:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206037787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388584776] [2024-10-31 22:07:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:09,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:09,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:09,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:09,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:07:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:07:09,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:07:09,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:07:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388584776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:09,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:07:09,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-31 22:07:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133873550] [2024-10-31 22:07:09,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:09,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:07:09,475 INFO L87 Difference]: Start difference. First operand 1241 states and 1626 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:07:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:09,566 INFO L93 Difference]: Finished difference Result 1938 states and 2530 transitions. [2024-10-31 22:07:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:09,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-10-31 22:07:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:09,574 INFO L225 Difference]: With dead ends: 1938 [2024-10-31 22:07:09,574 INFO L226 Difference]: Without dead ends: 1119 [2024-10-31 22:07:09,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:07:09,579 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 325 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:09,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 470 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-10-31 22:07:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1104. [2024-10-31 22:07:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 976 states have (on average 1.2920081967213115) internal successors, (1261), 993 states have internal predecessors, (1261), 75 states have call successors, (75), 43 states have call predecessors, (75), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2024-10-31 22:07:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1446 transitions. [2024-10-31 22:07:09,668 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1446 transitions. Word has length 88 [2024-10-31 22:07:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:09,668 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1446 transitions. [2024-10-31 22:07:09,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:07:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1446 transitions. [2024-10-31 22:07:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:07:09,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:09,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:09,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:07:09,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4526766-95c3-4068-928b-76f2243bcdcb/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:07:09,878 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:09,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1527050226, now seen corresponding path program 1 times [2024-10-31 22:07:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:09,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736453662] [2024-10-31 22:07:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:07:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:07:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:07:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:07:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:10,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:10,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736453662] [2024-10-31 22:07:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736453662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:10,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:10,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:07:10,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412280902] [2024-10-31 22:07:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:10,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:07:10,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:10,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:07:10,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:10,006 INFO L87 Difference]: Start difference. First operand 1104 states and 1446 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:11,331 INFO L93 Difference]: Finished difference Result 1330 states and 1795 transitions. [2024-10-31 22:07:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:07:11,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:07:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:11,338 INFO L225 Difference]: With dead ends: 1330 [2024-10-31 22:07:11,339 INFO L226 Difference]: Without dead ends: 1158 [2024-10-31 22:07:11,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:07:11,341 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 493 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:11,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 589 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 22:07:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-10-31 22:07:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1104. [2024-10-31 22:07:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 976 states have (on average 1.290983606557377) internal successors, (1260), 993 states have internal predecessors, (1260), 75 states have call successors, (75), 43 states have call predecessors, (75), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2024-10-31 22:07:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1445 transitions. [2024-10-31 22:07:11,460 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1445 transitions. Word has length 90 [2024-10-31 22:07:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:11,461 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1445 transitions. [2024-10-31 22:07:11,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1445 transitions. [2024-10-31 22:07:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:07:11,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:11,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:11,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:07:11,466 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:11,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:11,467 INFO L85 PathProgramCache]: Analyzing trace with hash 688016564, now seen corresponding path program 1 times [2024-10-31 22:07:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:11,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938279328] [2024-10-31 22:07:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:11,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:11,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:07:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:11,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:11,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:07:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:11,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:07:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:11,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:07:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:11,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:11,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938279328] [2024-10-31 22:07:11,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938279328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:11,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:11,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:07:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103503144] [2024-10-31 22:07:11,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:11,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:07:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:07:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:07:11,692 INFO L87 Difference]: Start difference. First operand 1104 states and 1445 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:13,622 INFO L93 Difference]: Finished difference Result 1554 states and 2142 transitions. [2024-10-31 22:07:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:07:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:07:13,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:13,630 INFO L225 Difference]: With dead ends: 1554 [2024-10-31 22:07:13,630 INFO L226 Difference]: Without dead ends: 1384 [2024-10-31 22:07:13,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:07:13,632 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 790 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:13,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 835 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:07:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2024-10-31 22:07:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1277. [2024-10-31 22:07:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1129 states have (on average 1.3224092116917627) internal successors, (1493), 1147 states have internal predecessors, (1493), 88 states have call successors, (88), 49 states have call predecessors, (88), 58 states have return successors, (126), 81 states have call predecessors, (126), 87 states have call successors, (126) [2024-10-31 22:07:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1707 transitions. [2024-10-31 22:07:13,788 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1707 transitions. Word has length 90 [2024-10-31 22:07:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:13,790 INFO L471 AbstractCegarLoop]: Abstraction has 1277 states and 1707 transitions. [2024-10-31 22:07:13,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1707 transitions. [2024-10-31 22:07:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:07:13,793 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:13,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:13,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:07:13,794 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:13,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash -486642888, now seen corresponding path program 1 times [2024-10-31 22:07:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755933074] [2024-10-31 22:07:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:13,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:07:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:13,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:14,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:07:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:14,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:07:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:14,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:07:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:14,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:14,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755933074] [2024-10-31 22:07:14,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755933074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:14,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:14,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:07:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723561692] [2024-10-31 22:07:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:14,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:07:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:07:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:07:14,050 INFO L87 Difference]: Start difference. First operand 1277 states and 1707 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:16,615 INFO L93 Difference]: Finished difference Result 1957 states and 2754 transitions. [2024-10-31 22:07:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:07:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:07:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:16,627 INFO L225 Difference]: With dead ends: 1957 [2024-10-31 22:07:16,627 INFO L226 Difference]: Without dead ends: 1614 [2024-10-31 22:07:16,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:07:16,630 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 801 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:16,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1436 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-31 22:07:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2024-10-31 22:07:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1439. [2024-10-31 22:07:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1271 states have (on average 1.3406766325727772) internal successors, (1704), 1290 states have internal predecessors, (1704), 101 states have call successors, (101), 55 states have call predecessors, (101), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2024-10-31 22:07:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1946 transitions. [2024-10-31 22:07:16,860 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1946 transitions. Word has length 90 [2024-10-31 22:07:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:16,860 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 1946 transitions. [2024-10-31 22:07:16,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1946 transitions. [2024-10-31 22:07:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:07:16,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:16,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:16,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:07:16,865 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:16,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash 400579958, now seen corresponding path program 1 times [2024-10-31 22:07:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:16,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888528626] [2024-10-31 22:07:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:16,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:16,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:07:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:17,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:17,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:07:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:17,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:07:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:17,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:07:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:17,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:17,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888528626] [2024-10-31 22:07:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888528626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:17,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:17,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:07:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085221080] [2024-10-31 22:07:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:17,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:07:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:07:17,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:07:17,121 INFO L87 Difference]: Start difference. First operand 1439 states and 1946 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:19,443 INFO L93 Difference]: Finished difference Result 2549 states and 3651 transitions. [2024-10-31 22:07:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:07:19,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:07:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:19,456 INFO L225 Difference]: With dead ends: 2549 [2024-10-31 22:07:19,457 INFO L226 Difference]: Without dead ends: 2044 [2024-10-31 22:07:19,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:07:19,460 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 795 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:19,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1434 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-31 22:07:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2024-10-31 22:07:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1767. [2024-10-31 22:07:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1559 states have (on average 1.3681847338037203) internal successors, (2133), 1580 states have internal predecessors, (2133), 127 states have call successors, (127), 67 states have call predecessors, (127), 79 states have return successors, (175), 123 states have call predecessors, (175), 126 states have call successors, (175) [2024-10-31 22:07:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2435 transitions. [2024-10-31 22:07:19,700 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2435 transitions. Word has length 90 [2024-10-31 22:07:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:19,701 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 2435 transitions. [2024-10-31 22:07:19,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2435 transitions. [2024-10-31 22:07:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:07:19,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:19,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:19,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:07:19,707 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:19,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash 477480756, now seen corresponding path program 1 times [2024-10-31 22:07:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264870679] [2024-10-31 22:07:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:19,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:07:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:19,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:19,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:07:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:19,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:07:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:19,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:07:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:19,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:19,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264870679] [2024-10-31 22:07:19,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264870679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:19,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:07:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386446237] [2024-10-31 22:07:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:19,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:07:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:07:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:07:19,929 INFO L87 Difference]: Start difference. First operand 1767 states and 2435 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:22,206 INFO L93 Difference]: Finished difference Result 3699 states and 5388 transitions. [2024-10-31 22:07:22,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:07:22,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:07:22,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:22,220 INFO L225 Difference]: With dead ends: 3699 [2024-10-31 22:07:22,220 INFO L226 Difference]: Without dead ends: 2866 [2024-10-31 22:07:22,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:07:22,224 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 794 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:22,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1434 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-31 22:07:22,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2024-10-31 22:07:22,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2424. [2024-10-31 22:07:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2136 states have (on average 1.4002808988764044) internal successors, (2991), 2161 states have internal predecessors, (2991), 179 states have call successors, (179), 91 states have call predecessors, (179), 107 states have return successors, (249), 179 states have call predecessors, (249), 178 states have call successors, (249) [2024-10-31 22:07:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3419 transitions. [2024-10-31 22:07:22,494 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3419 transitions. Word has length 90 [2024-10-31 22:07:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:22,495 INFO L471 AbstractCegarLoop]: Abstraction has 2424 states and 3419 transitions. [2024-10-31 22:07:22,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3419 transitions. [2024-10-31 22:07:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:07:22,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:22,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:22,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:07:22,500 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:22,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -489869898, now seen corresponding path program 1 times [2024-10-31 22:07:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815547859] [2024-10-31 22:07:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:22,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:07:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:22,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:22,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:07:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:22,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:07:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:22,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:07:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815547859] [2024-10-31 22:07:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815547859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:22,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:22,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:07:22,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708654883] [2024-10-31 22:07:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:22,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:07:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:07:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:07:22,711 INFO L87 Difference]: Start difference. First operand 2424 states and 3419 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:07:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:24,155 INFO L93 Difference]: Finished difference Result 4355 states and 6393 transitions. [2024-10-31 22:07:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:07:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:07:24,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:24,172 INFO L225 Difference]: With dead ends: 4355 [2024-10-31 22:07:24,173 INFO L226 Difference]: Without dead ends: 2865 [2024-10-31 22:07:24,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:07:24,179 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 631 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:24,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 850 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 22:07:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states.