./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d51b990e6445ed156c5ede746535f5b5f7ba06d95cc894d4b94049499df3553 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:27:57,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:27:57,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:27:57,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:27:57,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:27:57,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:27:57,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:27:57,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:27:57,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:27:57,397 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:27:57,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:27:57,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:27:57,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:27:57,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:27:57,400 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:27:57,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:27:57,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:27:57,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:27:57,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:27:57,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:27:57,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:27:57,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:27:57,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:27:57,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:27:57,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:27:57,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:27:57,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:27:57,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:27:57,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:27:57,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:27:57,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:27:57,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:27:57,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:27:57,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:27:57,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:27:57,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:27:57,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:27:57,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:27:57,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:27:57,409 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:27:57,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:27:57,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:27:57,409 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_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d51b990e6445ed156c5ede746535f5b5f7ba06d95cc894d4b94049499df3553 [2023-11-29 05:27:57,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:27:57,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:27:57,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:27:57,648 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:27:57,648 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:27:57,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2023-11-29 05:28:00,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:28:00,771 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:28:00,772 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2023-11-29 05:28:00,797 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/data/96dca9418/f012164d910b4e668632bb4861186558/FLAGba207e6b1 [2023-11-29 05:28:00,808 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/data/96dca9418/f012164d910b4e668632bb4861186558 [2023-11-29 05:28:00,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:28:00,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:28:00,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:28:00,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:28:00,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:28:00,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:28:00" (1/1) ... [2023-11-29 05:28:00,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398f0cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:00, skipping insertion in model container [2023-11-29 05:28:00,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:28:00" (1/1) ... [2023-11-29 05:28:00,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:28:01,273 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[26860,26873] [2023-11-29 05:28:01,317 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[32415,32428] [2023-11-29 05:28:02,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:28:02,133 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:28:02,182 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[26860,26873] [2023-11-29 05:28:02,193 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[32415,32428] [2023-11-29 05:28:02,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:28:02,756 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:28:02,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02 WrapperNode [2023-11-29 05:28:02,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:28:02,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:28:02,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:28:02,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:28:02,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:02,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,098 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5284 [2023-11-29 05:28:03,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:28:03,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:28:03,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:28:03,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:28:03,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,333 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:28:03,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:28:03,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:28:03,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:28:03,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:28:03,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (1/1) ... [2023-11-29 05:28:03,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:28:03,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:03,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:28:03,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:28:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:28:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:28:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:28:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:28:03,823 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:28:03,825 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:28:08,333 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:28:08,422 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:28:08,422 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:28:08,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:28:08 BoogieIcfgContainer [2023-11-29 05:28:08,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:28:08,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:28:08,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:28:08,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:28:08,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:28:00" (1/3) ... [2023-11-29 05:28:08,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e29e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:28:08, skipping insertion in model container [2023-11-29 05:28:08,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:02" (2/3) ... [2023-11-29 05:28:08,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e29e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:28:08, skipping insertion in model container [2023-11-29 05:28:08,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:28:08" (3/3) ... [2023-11-29 05:28:08,431 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2023-11-29 05:28:08,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:28:08,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:28:08,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:28:08,514 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c01d2d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:28:08,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:28:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 05:28:08,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:08,532 INFO L195 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] [2023-11-29 05:28:08,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:08,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash -31988621, now seen corresponding path program 1 times [2023-11-29 05:28:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610603415] [2023-11-29 05:28:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:08,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610603415] [2023-11-29 05:28:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610603415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:08,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:08,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:28:08,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043668938] [2023-11-29 05:28:08,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:08,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:28:08,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:28:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:28:08,837 INFO L87 Difference]: Start difference. First operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:08,923 INFO L93 Difference]: Finished difference Result 1699 states and 3336 transitions. [2023-11-29 05:28:08,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:28:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-29 05:28:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:08,943 INFO L225 Difference]: With dead ends: 1699 [2023-11-29 05:28:08,944 INFO L226 Difference]: Without dead ends: 878 [2023-11-29 05:28:08,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:28:08,953 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:08,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1661 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-29 05:28:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-11-29 05:28:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8961187214611872) internal successors, (1661), 877 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1661 transitions. [2023-11-29 05:28:09,041 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1661 transitions. Word has length 27 [2023-11-29 05:28:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:09,041 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1661 transitions. [2023-11-29 05:28:09,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1661 transitions. [2023-11-29 05:28:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 05:28:09,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:09,043 INFO L195 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] [2023-11-29 05:28:09,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:28:09,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:09,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1837426955, now seen corresponding path program 1 times [2023-11-29 05:28:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897542273] [2023-11-29 05:28:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:09,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:09,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897542273] [2023-11-29 05:28:09,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897542273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:09,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:09,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:28:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219779938] [2023-11-29 05:28:09,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:09,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:09,261 INFO L87 Difference]: Start difference. First operand 878 states and 1661 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:09,377 INFO L93 Difference]: Finished difference Result 940 states and 1760 transitions. [2023-11-29 05:28:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:09,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-29 05:28:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:09,384 INFO L225 Difference]: With dead ends: 940 [2023-11-29 05:28:09,384 INFO L226 Difference]: Without dead ends: 878 [2023-11-29 05:28:09,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:09,387 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 0 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:09,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4909 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:28:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-29 05:28:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-11-29 05:28:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.82648401826484) internal successors, (1600), 877 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1600 transitions. [2023-11-29 05:28:09,415 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1600 transitions. Word has length 27 [2023-11-29 05:28:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:09,415 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1600 transitions. [2023-11-29 05:28:09,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1600 transitions. [2023-11-29 05:28:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 05:28:09,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:09,417 INFO L195 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] [2023-11-29 05:28:09,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:28:09,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:09,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1474592282, now seen corresponding path program 1 times [2023-11-29 05:28:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:09,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785999045] [2023-11-29 05:28:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:09,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:09,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785999045] [2023-11-29 05:28:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785999045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:09,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:09,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:28:09,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209623130] [2023-11-29 05:28:09,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:09,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:09,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:09,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:09,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:09,562 INFO L87 Difference]: Start difference. First operand 878 states and 1600 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:13,334 INFO L93 Difference]: Finished difference Result 2382 states and 4473 transitions. [2023-11-29 05:28:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:13,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-29 05:28:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:13,343 INFO L225 Difference]: With dead ends: 2382 [2023-11-29 05:28:13,343 INFO L226 Difference]: Without dead ends: 1629 [2023-11-29 05:28:13,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:13,345 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 929 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:13,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 235 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:28:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2023-11-29 05:28:13,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2023-11-29 05:28:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.8285187461585741) internal successors, (2975), 1628 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2975 transitions. [2023-11-29 05:28:13,382 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2975 transitions. Word has length 47 [2023-11-29 05:28:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:13,382 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2975 transitions. [2023-11-29 05:28:13,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2975 transitions. [2023-11-29 05:28:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 05:28:13,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:13,388 INFO L195 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] [2023-11-29 05:28:13,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:28:13,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:13,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash -470628699, now seen corresponding path program 1 times [2023-11-29 05:28:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260734707] [2023-11-29 05:28:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:13,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:13,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260734707] [2023-11-29 05:28:13,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260734707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:13,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:13,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:28:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403226736] [2023-11-29 05:28:13,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:28:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:28:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:28:13,709 INFO L87 Difference]: Start difference. First operand 1629 states and 2975 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:14,377 INFO L93 Difference]: Finished difference Result 2573 states and 4511 transitions. [2023-11-29 05:28:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:28:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-29 05:28:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:14,394 INFO L225 Difference]: With dead ends: 2573 [2023-11-29 05:28:14,394 INFO L226 Difference]: Without dead ends: 2514 [2023-11-29 05:28:14,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:28:14,397 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 13341 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13341 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:14,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13341 Valid, 6272 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:28:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2023-11-29 05:28:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1686. [2023-11-29 05:28:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1684 states have (on average 1.821852731591449) internal successors, (3068), 1685 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 3068 transitions. [2023-11-29 05:28:14,462 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 3068 transitions. Word has length 87 [2023-11-29 05:28:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:14,462 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 3068 transitions. [2023-11-29 05:28:14,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 3068 transitions. [2023-11-29 05:28:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 05:28:14,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:14,466 INFO L195 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] [2023-11-29 05:28:14,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:28:14,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:14,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1442819851, now seen corresponding path program 1 times [2023-11-29 05:28:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:14,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311265609] [2023-11-29 05:28:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:14,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:14,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311265609] [2023-11-29 05:28:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311265609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:14,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370858467] [2023-11-29 05:28:14,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:14,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:14,639 INFO L87 Difference]: Start difference. First operand 1686 states and 3068 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:14,683 INFO L93 Difference]: Finished difference Result 1907 states and 3427 transitions. [2023-11-29 05:28:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 05:28:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:14,695 INFO L225 Difference]: With dead ends: 1907 [2023-11-29 05:28:14,695 INFO L226 Difference]: Without dead ends: 1791 [2023-11-29 05:28:14,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:14,697 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1504 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:14,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1685 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2023-11-29 05:28:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1789. [2023-11-29 05:28:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1787 states have (on average 1.8097369893676554) internal successors, (3234), 1788 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 3234 transitions. [2023-11-29 05:28:14,753 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 3234 transitions. Word has length 89 [2023-11-29 05:28:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:14,753 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 3234 transitions. [2023-11-29 05:28:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:14,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 3234 transitions. [2023-11-29 05:28:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 05:28:14,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:14,755 INFO L195 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] [2023-11-29 05:28:14,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:28:14,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:14,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1440674899, now seen corresponding path program 1 times [2023-11-29 05:28:14,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:14,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610806984] [2023-11-29 05:28:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:15,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:15,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610806984] [2023-11-29 05:28:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610806984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:15,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:15,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:28:15,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699555214] [2023-11-29 05:28:15,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:15,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:28:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:28:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:28:15,315 INFO L87 Difference]: Start difference. First operand 1789 states and 3234 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:15,843 INFO L93 Difference]: Finished difference Result 2010 states and 3590 transitions. [2023-11-29 05:28:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:28:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 05:28:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:15,855 INFO L225 Difference]: With dead ends: 2010 [2023-11-29 05:28:15,856 INFO L226 Difference]: Without dead ends: 1791 [2023-11-29 05:28:15,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:28:15,858 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 10612 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10612 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:15,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10612 Valid, 2237 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:28:15,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2023-11-29 05:28:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1789. [2023-11-29 05:28:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1787 states have (on average 1.8086177951874651) internal successors, (3232), 1788 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 3232 transitions. [2023-11-29 05:28:15,913 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 3232 transitions. Word has length 89 [2023-11-29 05:28:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:15,914 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 3232 transitions. [2023-11-29 05:28:15,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 3232 transitions. [2023-11-29 05:28:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 05:28:15,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:15,916 INFO L195 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] [2023-11-29 05:28:15,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:28:15,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:15,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1840151110, now seen corresponding path program 1 times [2023-11-29 05:28:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:15,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926723450] [2023-11-29 05:28:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:15,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:16,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:16,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926723450] [2023-11-29 05:28:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926723450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:16,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:16,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:28:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710435813] [2023-11-29 05:28:16,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:16,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:16,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:16,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:16,207 INFO L87 Difference]: Start difference. First operand 1789 states and 3232 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:16,277 INFO L93 Difference]: Finished difference Result 1797 states and 3241 transitions. [2023-11-29 05:28:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:16,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-29 05:28:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:16,288 INFO L225 Difference]: With dead ends: 1797 [2023-11-29 05:28:16,288 INFO L226 Difference]: Without dead ends: 1795 [2023-11-29 05:28:16,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:16,289 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:16,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4780 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2023-11-29 05:28:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1793. [2023-11-29 05:28:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1791 states have (on average 1.806253489670575) internal successors, (3235), 1792 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 3235 transitions. [2023-11-29 05:28:16,339 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 3235 transitions. Word has length 90 [2023-11-29 05:28:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:16,340 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 3235 transitions. [2023-11-29 05:28:16,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 3235 transitions. [2023-11-29 05:28:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:16,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:16,341 INFO L195 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, 1] [2023-11-29 05:28:16,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:28:16,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:16,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:16,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1591939181, now seen corresponding path program 1 times [2023-11-29 05:28:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061267323] [2023-11-29 05:28:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:16,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:16,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061267323] [2023-11-29 05:28:16,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061267323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:16,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:16,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:16,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900588276] [2023-11-29 05:28:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:16,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:16,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:16,441 INFO L87 Difference]: Start difference. First operand 1793 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:16,482 INFO L93 Difference]: Finished difference Result 2027 states and 3608 transitions. [2023-11-29 05:28:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:16,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:16,494 INFO L225 Difference]: With dead ends: 2027 [2023-11-29 05:28:16,494 INFO L226 Difference]: Without dead ends: 1907 [2023-11-29 05:28:16,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:16,495 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1524 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:16,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1773 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2023-11-29 05:28:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1905. [2023-11-29 05:28:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1903 states have (on average 1.7929584866001052) internal successors, (3412), 1904 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3412 transitions. [2023-11-29 05:28:16,547 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3412 transitions. Word has length 91 [2023-11-29 05:28:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:16,548 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 3412 transitions. [2023-11-29 05:28:16,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3412 transitions. [2023-11-29 05:28:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:16,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:16,549 INFO L195 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, 1] [2023-11-29 05:28:16,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:28:16,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:16,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1666551661, now seen corresponding path program 1 times [2023-11-29 05:28:16,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:16,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882110697] [2023-11-29 05:28:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:16,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:16,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:16,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882110697] [2023-11-29 05:28:16,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882110697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:16,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:16,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:16,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469660328] [2023-11-29 05:28:16,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:16,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:16,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:16,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:16,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:16,648 INFO L87 Difference]: Start difference. First operand 1905 states and 3412 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:16,695 INFO L93 Difference]: Finished difference Result 2547 states and 4432 transitions. [2023-11-29 05:28:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:16,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:16,709 INFO L225 Difference]: With dead ends: 2547 [2023-11-29 05:28:16,709 INFO L226 Difference]: Without dead ends: 2214 [2023-11-29 05:28:16,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:16,711 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1522 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:16,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2023-11-29 05:28:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2212. [2023-11-29 05:28:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2210 states have (on average 1.7619909502262443) internal successors, (3894), 2211 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3894 transitions. [2023-11-29 05:28:16,773 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3894 transitions. Word has length 91 [2023-11-29 05:28:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:16,774 INFO L495 AbstractCegarLoop]: Abstraction has 2212 states and 3894 transitions. [2023-11-29 05:28:16,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3894 transitions. [2023-11-29 05:28:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:16,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:16,775 INFO L195 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, 1] [2023-11-29 05:28:16,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:28:16,775 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:16,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2011549037, now seen corresponding path program 1 times [2023-11-29 05:28:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:16,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470831757] [2023-11-29 05:28:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:16,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:16,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470831757] [2023-11-29 05:28:16,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470831757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:16,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91487177] [2023-11-29 05:28:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:16,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:16,870 INFO L87 Difference]: Start difference. First operand 2212 states and 3894 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:16,930 INFO L93 Difference]: Finished difference Result 3444 states and 5836 transitions. [2023-11-29 05:28:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:16,946 INFO L225 Difference]: With dead ends: 3444 [2023-11-29 05:28:16,946 INFO L226 Difference]: Without dead ends: 2804 [2023-11-29 05:28:16,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:16,948 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1518 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:16,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1775 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:16,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2023-11-29 05:28:17,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2802. [2023-11-29 05:28:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2800 states have (on average 1.7178571428571427) internal successors, (4810), 2801 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4810 transitions. [2023-11-29 05:28:17,032 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4810 transitions. Word has length 91 [2023-11-29 05:28:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:17,032 INFO L495 AbstractCegarLoop]: Abstraction has 2802 states and 4810 transitions. [2023-11-29 05:28:17,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4810 transitions. [2023-11-29 05:28:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:17,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:17,034 INFO L195 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, 1] [2023-11-29 05:28:17,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:28:17,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:17,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1742965869, now seen corresponding path program 1 times [2023-11-29 05:28:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35465665] [2023-11-29 05:28:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:17,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:17,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35465665] [2023-11-29 05:28:17,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35465665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:17,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:17,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:17,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792639392] [2023-11-29 05:28:17,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:17,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:17,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:17,126 INFO L87 Difference]: Start difference. First operand 2802 states and 4810 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:17,211 INFO L93 Difference]: Finished difference Result 5166 states and 8500 transitions. [2023-11-29 05:28:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:17,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:17,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:17,233 INFO L225 Difference]: With dead ends: 5166 [2023-11-29 05:28:17,234 INFO L226 Difference]: Without dead ends: 3936 [2023-11-29 05:28:17,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:17,237 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1516 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:17,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1777 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2023-11-29 05:28:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3934. [2023-11-29 05:28:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3932 states have (on average 1.6648016276703967) internal successors, (6546), 3933 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 6546 transitions. [2023-11-29 05:28:17,386 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 6546 transitions. Word has length 91 [2023-11-29 05:28:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:17,387 INFO L495 AbstractCegarLoop]: Abstraction has 3934 states and 6546 transitions. [2023-11-29 05:28:17,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 6546 transitions. [2023-11-29 05:28:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:17,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:17,389 INFO L195 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, 1] [2023-11-29 05:28:17,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:28:17,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:17,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1782909805, now seen corresponding path program 1 times [2023-11-29 05:28:17,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:17,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059790944] [2023-11-29 05:28:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:17,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:17,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:17,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059790944] [2023-11-29 05:28:17,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059790944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:17,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:17,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:17,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002419252] [2023-11-29 05:28:17,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:17,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:17,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:17,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:17,473 INFO L87 Difference]: Start difference. First operand 3934 states and 6546 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:17,600 INFO L93 Difference]: Finished difference Result 8466 states and 13540 transitions. [2023-11-29 05:28:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:17,615 INFO L225 Difference]: With dead ends: 8466 [2023-11-29 05:28:17,615 INFO L226 Difference]: Without dead ends: 6104 [2023-11-29 05:28:17,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:17,619 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:17,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2023-11-29 05:28:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 6102. [2023-11-29 05:28:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 6100 states have (on average 1.6108196721311476) internal successors, (9826), 6101 states have internal predecessors, (9826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 9826 transitions. [2023-11-29 05:28:17,777 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 9826 transitions. Word has length 91 [2023-11-29 05:28:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:17,778 INFO L495 AbstractCegarLoop]: Abstraction has 6102 states and 9826 transitions. [2023-11-29 05:28:17,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 9826 transitions. [2023-11-29 05:28:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:17,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:17,779 INFO L195 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, 1] [2023-11-29 05:28:17,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:28:17,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:17,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:17,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1157253741, now seen corresponding path program 1 times [2023-11-29 05:28:17,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:17,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321018369] [2023-11-29 05:28:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:17,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:17,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321018369] [2023-11-29 05:28:17,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321018369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:17,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:17,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:17,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79532092] [2023-11-29 05:28:17,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:17,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:17,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:17,846 INFO L87 Difference]: Start difference. First operand 6102 states and 9826 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:18,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:18,006 INFO L93 Difference]: Finished difference Result 14778 states and 23044 transitions. [2023-11-29 05:28:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:18,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:18,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:18,021 INFO L225 Difference]: With dead ends: 14778 [2023-11-29 05:28:18,021 INFO L226 Difference]: Without dead ends: 10248 [2023-11-29 05:28:18,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:18,028 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1512 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:18,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10248 states. [2023-11-29 05:28:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10248 to 10246. [2023-11-29 05:28:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10244 states have (on average 1.5620851229988286) internal successors, (16002), 10245 states have internal predecessors, (16002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 16002 transitions. [2023-11-29 05:28:18,341 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 16002 transitions. Word has length 91 [2023-11-29 05:28:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:18,341 INFO L495 AbstractCegarLoop]: Abstraction has 10246 states and 16002 transitions. [2023-11-29 05:28:18,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 16002 transitions. [2023-11-29 05:28:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:18,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:18,343 INFO L195 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, 1] [2023-11-29 05:28:18,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:28:18,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:18,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2045987181, now seen corresponding path program 1 times [2023-11-29 05:28:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:18,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379020325] [2023-11-29 05:28:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:18,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:18,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379020325] [2023-11-29 05:28:18,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379020325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:18,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:18,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666440231] [2023-11-29 05:28:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:18,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:18,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:18,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:18,427 INFO L87 Difference]: Start difference. First operand 10246 states and 16002 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:18,844 INFO L93 Difference]: Finished difference Result 26826 states and 40900 transitions. [2023-11-29 05:28:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:18,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:18,879 INFO L225 Difference]: With dead ends: 26826 [2023-11-29 05:28:18,879 INFO L226 Difference]: Without dead ends: 18152 [2023-11-29 05:28:18,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:18,894 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1510 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:18,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18152 states. [2023-11-29 05:28:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18152 to 18150. [2023-11-29 05:28:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18150 states, 18148 states have (on average 1.5200573065902578) internal successors, (27586), 18149 states have internal predecessors, (27586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18150 states to 18150 states and 27586 transitions. [2023-11-29 05:28:19,382 INFO L78 Accepts]: Start accepts. Automaton has 18150 states and 27586 transitions. Word has length 91 [2023-11-29 05:28:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:19,382 INFO L495 AbstractCegarLoop]: Abstraction has 18150 states and 27586 transitions. [2023-11-29 05:28:19,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 18150 states and 27586 transitions. [2023-11-29 05:28:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:28:19,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:19,383 INFO L195 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, 1] [2023-11-29 05:28:19,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:28:19,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:19,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1873031571, now seen corresponding path program 1 times [2023-11-29 05:28:19,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:19,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917666143] [2023-11-29 05:28:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:19,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:19,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917666143] [2023-11-29 05:28:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917666143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:19,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:19,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584041794] [2023-11-29 05:28:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:19,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:19,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:19,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:19,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:19,445 INFO L87 Difference]: Start difference. First operand 18150 states and 27586 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:19,982 INFO L93 Difference]: Finished difference Result 49770 states and 74308 transitions. [2023-11-29 05:28:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:28:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:20,029 INFO L225 Difference]: With dead ends: 49770 [2023-11-29 05:28:20,029 INFO L226 Difference]: Without dead ends: 33192 [2023-11-29 05:28:20,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:20,051 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1520 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:20,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33192 states. [2023-11-29 05:28:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33192 to 33190. [2023-11-29 05:28:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33190 states, 33188 states have (on average 1.4830059057490659) internal successors, (49218), 33189 states have internal predecessors, (49218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33190 states to 33190 states and 49218 transitions. [2023-11-29 05:28:21,102 INFO L78 Accepts]: Start accepts. Automaton has 33190 states and 49218 transitions. Word has length 91 [2023-11-29 05:28:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:21,102 INFO L495 AbstractCegarLoop]: Abstraction has 33190 states and 49218 transitions. [2023-11-29 05:28:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 33190 states and 49218 transitions. [2023-11-29 05:28:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:28:21,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:21,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:21,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:28:21,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:21,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1900714775, now seen corresponding path program 1 times [2023-11-29 05:28:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:21,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643714732] [2023-11-29 05:28:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:21,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:28:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643714732] [2023-11-29 05:28:21,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643714732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:21,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:21,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:28:21,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714910405] [2023-11-29 05:28:21,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:21,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:28:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:28:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:28:21,430 INFO L87 Difference]: Start difference. First operand 33190 states and 49218 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:26,328 INFO L93 Difference]: Finished difference Result 282808 states and 414923 transitions. [2023-11-29 05:28:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:28:26,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:28:26,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:26,672 INFO L225 Difference]: With dead ends: 282808 [2023-11-29 05:28:26,673 INFO L226 Difference]: Without dead ends: 260790 [2023-11-29 05:28:26,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:28:26,731 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 11680 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11680 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:26,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11680 Valid, 5189 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:28:26,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260790 states. [2023-11-29 05:28:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260790 to 60070. [2023-11-29 05:28:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60070 states, 60068 states have (on average 1.4693014583472066) internal successors, (88258), 60069 states have internal predecessors, (88258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60070 states to 60070 states and 88258 transitions. [2023-11-29 05:28:30,116 INFO L78 Accepts]: Start accepts. Automaton has 60070 states and 88258 transitions. Word has length 115 [2023-11-29 05:28:30,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:30,116 INFO L495 AbstractCegarLoop]: Abstraction has 60070 states and 88258 transitions. [2023-11-29 05:28:30,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 60070 states and 88258 transitions. [2023-11-29 05:28:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:28:30,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:30,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:30,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:28:30,125 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:30,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:30,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1975327255, now seen corresponding path program 1 times [2023-11-29 05:28:30,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:30,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20257067] [2023-11-29 05:28:30,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:28:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20257067] [2023-11-29 05:28:30,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20257067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:30,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:30,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:28:30,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831897228] [2023-11-29 05:28:30,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:30,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:28:30,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:28:30,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:28:30,364 INFO L87 Difference]: Start difference. First operand 60070 states and 88258 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:38,042 INFO L93 Difference]: Finished difference Result 314424 states and 461003 transitions. [2023-11-29 05:28:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:28:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:28:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:38,377 INFO L225 Difference]: With dead ends: 314424 [2023-11-29 05:28:38,377 INFO L226 Difference]: Without dead ends: 282806 [2023-11-29 05:28:38,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:28:38,421 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 11682 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11682 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:38,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11682 Valid, 5148 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:28:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282806 states. [2023-11-29 05:28:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282806 to 102694. [2023-11-29 05:28:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102694 states, 102692 states have (on average 1.4614770381334476) internal successors, (150082), 102693 states have internal predecessors, (150082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102694 states to 102694 states and 150082 transitions. [2023-11-29 05:28:43,507 INFO L78 Accepts]: Start accepts. Automaton has 102694 states and 150082 transitions. Word has length 115 [2023-11-29 05:28:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:43,507 INFO L495 AbstractCegarLoop]: Abstraction has 102694 states and 150082 transitions. [2023-11-29 05:28:43,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 102694 states and 150082 transitions. [2023-11-29 05:28:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:28:43,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:43,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:43,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:28:43,521 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:43,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1974642665, now seen corresponding path program 1 times [2023-11-29 05:28:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:43,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806065632] [2023-11-29 05:28:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:43,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:28:43,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:43,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806065632] [2023-11-29 05:28:43,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806065632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:43,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:43,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:28:43,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557360535] [2023-11-29 05:28:43,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:43,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:28:43,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:43,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:28:43,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:28:43,820 INFO L87 Difference]: Start difference. First operand 102694 states and 150082 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:52,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:52,439 INFO L93 Difference]: Finished difference Result 346040 states and 506955 transitions. [2023-11-29 05:28:52,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:28:52,440 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:28:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:52,939 INFO L225 Difference]: With dead ends: 346040 [2023-11-29 05:28:52,939 INFO L226 Difference]: Without dead ends: 314422 [2023-11-29 05:28:52,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:28:52,981 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 11722 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11722 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:52,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11722 Valid, 5175 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:28:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314422 states. [2023-11-29 05:28:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314422 to 134310. [2023-11-29 05:28:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134310 states, 134308 states have (on average 1.459585430503023) internal successors, (196034), 134309 states have internal predecessors, (196034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134310 states to 134310 states and 196034 transitions. [2023-11-29 05:28:59,180 INFO L78 Accepts]: Start accepts. Automaton has 134310 states and 196034 transitions. Word has length 115 [2023-11-29 05:28:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:59,180 INFO L495 AbstractCegarLoop]: Abstraction has 134310 states and 196034 transitions. [2023-11-29 05:28:59,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:59,180 INFO L276 IsEmpty]: Start isEmpty. Operand 134310 states and 196034 transitions. [2023-11-29 05:28:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:28:59,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:59,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:59,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:28:59,190 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:59,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2051741463, now seen corresponding path program 1 times [2023-11-29 05:28:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:59,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274407694] [2023-11-29 05:28:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:59,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:28:59,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274407694] [2023-11-29 05:28:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274407694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:59,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:59,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:28:59,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722308231] [2023-11-29 05:28:59,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:59,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:28:59,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:59,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:28:59,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:28:59,407 INFO L87 Difference]: Start difference. First operand 134310 states and 196034 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:10,368 INFO L93 Difference]: Finished difference Result 377656 states and 552907 transitions. [2023-11-29 05:29:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:29:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:29:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:10,895 INFO L225 Difference]: With dead ends: 377656 [2023-11-29 05:29:10,895 INFO L226 Difference]: Without dead ends: 346038 [2023-11-29 05:29:10,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:29:10,929 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 11774 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11774 SdHoareTripleChecker+Valid, 5083 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:10,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11774 Valid, 5083 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:29:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346038 states. [2023-11-29 05:29:18,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346038 to 165926. [2023-11-29 05:29:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165926 states, 165924 states have (on average 1.458414695884863) internal successors, (241986), 165925 states have internal predecessors, (241986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165926 states to 165926 states and 241986 transitions. [2023-11-29 05:29:18,874 INFO L78 Accepts]: Start accepts. Automaton has 165926 states and 241986 transitions. Word has length 115 [2023-11-29 05:29:18,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:18,874 INFO L495 AbstractCegarLoop]: Abstraction has 165926 states and 241986 transitions. [2023-11-29 05:29:18,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 165926 states and 241986 transitions. [2023-11-29 05:29:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:29:18,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:18,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:29:18,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:18,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2091685399, now seen corresponding path program 1 times [2023-11-29 05:29:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:18,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110264296] [2023-11-29 05:29:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 05:29:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110264296] [2023-11-29 05:29:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110264296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:19,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:29:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413728386] [2023-11-29 05:29:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:19,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:29:19,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:19,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:29:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:29:19,173 INFO L87 Difference]: Start difference. First operand 165926 states and 241986 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:32,453 INFO L93 Difference]: Finished difference Result 409272 states and 598859 transitions. [2023-11-29 05:29:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:29:32,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:29:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:33,041 INFO L225 Difference]: With dead ends: 409272 [2023-11-29 05:29:33,041 INFO L226 Difference]: Without dead ends: 377654 [2023-11-29 05:29:33,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:29:33,089 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 11829 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11829 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:33,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11829 Valid, 5048 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:29:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377654 states. [2023-11-29 05:29:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377654 to 197542. [2023-11-29 05:29:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197542 states, 197540 states have (on average 1.4576187101346563) internal successors, (287938), 197541 states have internal predecessors, (287938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197542 states to 197542 states and 287938 transitions. [2023-11-29 05:29:42,776 INFO L78 Accepts]: Start accepts. Automaton has 197542 states and 287938 transitions. Word has length 115 [2023-11-29 05:29:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:42,776 INFO L495 AbstractCegarLoop]: Abstraction has 197542 states and 287938 transitions. [2023-11-29 05:29:42,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 197542 states and 287938 transitions. [2023-11-29 05:29:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:29:42,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:42,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:29:42,787 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:42,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1466029335, now seen corresponding path program 1 times [2023-11-29 05:29:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:42,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771808811] [2023-11-29 05:29:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:29:43,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:43,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771808811] [2023-11-29 05:29:43,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771808811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:43,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:43,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:29:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671943412] [2023-11-29 05:29:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:29:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:29:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:29:43,077 INFO L87 Difference]: Start difference. First operand 197542 states and 287938 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:57,621 INFO L93 Difference]: Finished difference Result 440888 states and 644811 transitions. [2023-11-29 05:29:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:29:57,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:29:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:58,312 INFO L225 Difference]: With dead ends: 440888 [2023-11-29 05:29:58,312 INFO L226 Difference]: Without dead ends: 409270 [2023-11-29 05:29:58,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:29:58,384 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 11893 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11893 SdHoareTripleChecker+Valid, 5088 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:58,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11893 Valid, 5088 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:29:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409270 states. [2023-11-29 05:30:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409270 to 229158. [2023-11-29 05:30:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229158 states, 229156 states have (on average 1.457042364153677) internal successors, (333890), 229157 states have internal predecessors, (333890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229158 states to 229158 states and 333890 transitions. [2023-11-29 05:30:09,759 INFO L78 Accepts]: Start accepts. Automaton has 229158 states and 333890 transitions. Word has length 115 [2023-11-29 05:30:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:30:09,759 INFO L495 AbstractCegarLoop]: Abstraction has 229158 states and 333890 transitions. [2023-11-29 05:30:09,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 229158 states and 333890 transitions. [2023-11-29 05:30:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:30:09,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:30:09,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:09,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:30:09,769 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:30:09,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1940204521, now seen corresponding path program 1 times [2023-11-29 05:30:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728235463] [2023-11-29 05:30:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:30:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728235463] [2023-11-29 05:30:09,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728235463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:09,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:09,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:30:09,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717227628] [2023-11-29 05:30:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:30:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:09,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:30:09,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:30:09,987 INFO L87 Difference]: Start difference. First operand 229158 states and 333890 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:30:26,131 INFO L93 Difference]: Finished difference Result 472504 states and 690763 transitions. [2023-11-29 05:30:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:30:26,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:30:26,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:30:26,875 INFO L225 Difference]: With dead ends: 472504 [2023-11-29 05:30:26,875 INFO L226 Difference]: Without dead ends: 440886 [2023-11-29 05:30:26,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:30:26,953 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 11704 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11704 SdHoareTripleChecker+Valid, 5212 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:30:26,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11704 Valid, 5212 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:30:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440886 states. [2023-11-29 05:30:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440886 to 260774. [2023-11-29 05:30:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260774 states, 260772 states have (on average 1.4566057705581887) internal successors, (379842), 260773 states have internal predecessors, (379842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260774 states to 260774 states and 379842 transitions. [2023-11-29 05:30:39,635 INFO L78 Accepts]: Start accepts. Automaton has 260774 states and 379842 transitions. Word has length 115 [2023-11-29 05:30:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:30:39,635 INFO L495 AbstractCegarLoop]: Abstraction has 260774 states and 379842 transitions. [2023-11-29 05:30:39,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:39,635 INFO L276 IsEmpty]: Start isEmpty. Operand 260774 states and 379842 transitions. [2023-11-29 05:30:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:30:39,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:30:39,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:39,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:30:39,645 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:30:39,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1564255977, now seen corresponding path program 1 times [2023-11-29 05:30:39,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675076109] [2023-11-29 05:30:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:30:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675076109] [2023-11-29 05:30:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675076109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:39,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:30:39,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426892685] [2023-11-29 05:30:39,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:39,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:30:39,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:39,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:30:39,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:30:39,920 INFO L87 Difference]: Start difference. First operand 260774 states and 379842 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:30:58,274 INFO L93 Difference]: Finished difference Result 504120 states and 736715 transitions. [2023-11-29 05:30:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:30:58,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:30:58,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:30:58,985 INFO L225 Difference]: With dead ends: 504120 [2023-11-29 05:30:58,986 INFO L226 Difference]: Without dead ends: 472502 [2023-11-29 05:30:59,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:30:59,060 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 11611 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11611 SdHoareTripleChecker+Valid, 5501 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:30:59,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11611 Valid, 5501 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:30:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472502 states. [2023-11-29 05:31:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472502 to 292390. [2023-11-29 05:31:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292390 states, 292388 states have (on average 1.4562635949491771) internal successors, (425794), 292389 states have internal predecessors, (425794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292390 states to 292390 states and 425794 transitions. [2023-11-29 05:31:13,939 INFO L78 Accepts]: Start accepts. Automaton has 292390 states and 425794 transitions. Word has length 115 [2023-11-29 05:31:13,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:13,939 INFO L495 AbstractCegarLoop]: Abstraction has 292390 states and 425794 transitions. [2023-11-29 05:31:13,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:13,939 INFO L276 IsEmpty]: Start isEmpty. Operand 292390 states and 425794 transitions. [2023-11-29 05:31:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 05:31:13,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:13,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:13,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:31:13,951 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:13,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:13,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1886886271, now seen corresponding path program 1 times [2023-11-29 05:31:13,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:13,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961596461] [2023-11-29 05:31:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:13,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:14,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:14,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961596461] [2023-11-29 05:31:14,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961596461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:14,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:14,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:31:14,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518112525] [2023-11-29 05:31:14,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:14,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:14,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:14,057 INFO L87 Difference]: Start difference. First operand 292390 states and 425794 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:26,085 INFO L93 Difference]: Finished difference Result 583210 states and 848708 transitions. [2023-11-29 05:31:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:31:26,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 05:31:26,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:26,430 INFO L225 Difference]: With dead ends: 583210 [2023-11-29 05:31:26,430 INFO L226 Difference]: Without dead ends: 292392 [2023-11-29 05:31:26,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:26,520 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 69 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:26,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 3241 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:31:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292392 states. [2023-11-29 05:31:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292392 to 292390. [2023-11-29 05:31:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292390 states, 292388 states have (on average 1.444224797187299) internal successors, (422274), 292389 states have internal predecessors, (422274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292390 states to 292390 states and 422274 transitions. [2023-11-29 05:31:40,345 INFO L78 Accepts]: Start accepts. Automaton has 292390 states and 422274 transitions. Word has length 116 [2023-11-29 05:31:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:40,345 INFO L495 AbstractCegarLoop]: Abstraction has 292390 states and 422274 transitions. [2023-11-29 05:31:40,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 292390 states and 422274 transitions. [2023-11-29 05:31:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:31:40,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:40,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:40,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:31:40,352 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:40,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -224114017, now seen corresponding path program 1 times [2023-11-29 05:31:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:40,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139161269] [2023-11-29 05:31:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:40,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139161269] [2023-11-29 05:31:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139161269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:40,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:40,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:31:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807228391] [2023-11-29 05:31:40,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:40,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:40,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:40,484 INFO L87 Difference]: Start difference. First operand 292390 states and 422274 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:45,440 INFO L93 Difference]: Finished difference Result 396994 states and 574301 transitions. [2023-11-29 05:31:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:31:45,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-11-29 05:31:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:45,560 INFO L225 Difference]: With dead ends: 396994 [2023-11-29 05:31:45,560 INFO L226 Difference]: Without dead ends: 106176 [2023-11-29 05:31:45,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:45,622 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 63 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:45,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3238 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:31:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106176 states. [2023-11-29 05:31:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106176 to 106169. [2023-11-29 05:31:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106169 states, 106167 states have (on average 1.4475778725969464) internal successors, (153685), 106168 states have internal predecessors, (153685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106169 states to 106169 states and 153685 transitions. [2023-11-29 05:31:50,576 INFO L78 Accepts]: Start accepts. Automaton has 106169 states and 153685 transitions. Word has length 117 [2023-11-29 05:31:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:50,576 INFO L495 AbstractCegarLoop]: Abstraction has 106169 states and 153685 transitions. [2023-11-29 05:31:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 106169 states and 153685 transitions. [2023-11-29 05:31:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 05:31:50,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:50,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:31:50,580 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:50,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:50,581 INFO L85 PathProgramCache]: Analyzing trace with hash 358724685, now seen corresponding path program 1 times [2023-11-29 05:31:50,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:50,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437563972] [2023-11-29 05:31:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:50,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:50,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437563972] [2023-11-29 05:31:50,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437563972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:50,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:50,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:31:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161549591] [2023-11-29 05:31:50,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:50,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:50,698 INFO L87 Difference]: Start difference. First operand 106169 states and 153685 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:52,890 INFO L93 Difference]: Finished difference Result 158461 states and 229079 transitions. [2023-11-29 05:31:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:31:52,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-11-29 05:31:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:52,938 INFO L225 Difference]: With dead ends: 158461 [2023-11-29 05:31:52,938 INFO L226 Difference]: Without dead ends: 53883 [2023-11-29 05:31:52,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:52,968 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 65 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:52,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 3217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:31:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53883 states. [2023-11-29 05:31:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53883 to 53881. [2023-11-29 05:31:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53881 states, 53879 states have (on average 1.441841905009373) internal successors, (77685), 53880 states have internal predecessors, (77685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53881 states to 53881 states and 77685 transitions. [2023-11-29 05:31:55,412 INFO L78 Accepts]: Start accepts. Automaton has 53881 states and 77685 transitions. Word has length 118 [2023-11-29 05:31:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:55,412 INFO L495 AbstractCegarLoop]: Abstraction has 53881 states and 77685 transitions. [2023-11-29 05:31:55,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 53881 states and 77685 transitions. [2023-11-29 05:31:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:31:55,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:55,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:55,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:31:55,415 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:55,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1674692453, now seen corresponding path program 1 times [2023-11-29 05:31:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895254816] [2023-11-29 05:31:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:55,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:55,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895254816] [2023-11-29 05:31:55,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895254816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:55,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:55,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:31:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162356683] [2023-11-29 05:31:55,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:55,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:55,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:55,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:55,543 INFO L87 Difference]: Start difference. First operand 53881 states and 77685 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:56,663 INFO L93 Difference]: Finished difference Result 80029 states and 115079 transitions. [2023-11-29 05:31:56,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:31:56,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-11-29 05:31:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:56,688 INFO L225 Difference]: With dead ends: 80029 [2023-11-29 05:31:56,688 INFO L226 Difference]: Without dead ends: 27739 [2023-11-29 05:31:56,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:56,698 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 62 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:56,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3202 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:31:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27739 states. [2023-11-29 05:31:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27739 to 27737. [2023-11-29 05:31:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27737 states, 27735 states have (on average 1.4418244095907697) internal successors, (39989), 27736 states have internal predecessors, (39989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27737 states to 27737 states and 39989 transitions. [2023-11-29 05:31:57,768 INFO L78 Accepts]: Start accepts. Automaton has 27737 states and 39989 transitions. Word has length 120 [2023-11-29 05:31:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:57,768 INFO L495 AbstractCegarLoop]: Abstraction has 27737 states and 39989 transitions. [2023-11-29 05:31:57,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 27737 states and 39989 transitions. [2023-11-29 05:31:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:31:57,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:57,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:57,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:31:57,771 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:57,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash -693948711, now seen corresponding path program 1 times [2023-11-29 05:31:57,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:57,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950342307] [2023-11-29 05:31:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:57,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:57,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950342307] [2023-11-29 05:31:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950342307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:57,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:31:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855442681] [2023-11-29 05:31:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:57,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:57,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:57,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:57,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:57,874 INFO L87 Difference]: Start difference. First operand 27737 states and 39989 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:02,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:02,046 INFO L93 Difference]: Finished difference Result 30745 states and 45613 transitions. [2023-11-29 05:32:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:32:02,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-11-29 05:32:02,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:02,071 INFO L225 Difference]: With dead ends: 30745 [2023-11-29 05:32:02,071 INFO L226 Difference]: Without dead ends: 29241 [2023-11-29 05:32:02,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:02,077 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 889 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:02,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 653 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 05:32:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29241 states. [2023-11-29 05:32:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29241 to 29239. [2023-11-29 05:32:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29239 states, 29237 states have (on average 1.4341416698019633) internal successors, (41930), 29238 states have internal predecessors, (41930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29239 states to 29239 states and 41930 transitions. [2023-11-29 05:32:03,241 INFO L78 Accepts]: Start accepts. Automaton has 29239 states and 41930 transitions. Word has length 120 [2023-11-29 05:32:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:03,242 INFO L495 AbstractCegarLoop]: Abstraction has 29239 states and 41930 transitions. [2023-11-29 05:32:03,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 29239 states and 41930 transitions. [2023-11-29 05:32:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 05:32:03,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:03,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:03,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:32:03,243 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:03,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1444808297, now seen corresponding path program 1 times [2023-11-29 05:32:03,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:03,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746178212] [2023-11-29 05:32:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:03,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746178212] [2023-11-29 05:32:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746178212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:32:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:32:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:32:03,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790244217] [2023-11-29 05:32:03,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:32:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:32:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:32:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:03,330 INFO L87 Difference]: Start difference. First operand 29239 states and 41930 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:03,855 INFO L93 Difference]: Finished difference Result 42315 states and 60476 transitions. [2023-11-29 05:32:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:32:03,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-11-29 05:32:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:03,868 INFO L225 Difference]: With dead ends: 42315 [2023-11-29 05:32:03,868 INFO L226 Difference]: Without dead ends: 16169 [2023-11-29 05:32:03,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:03,879 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 59 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:03,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3187 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:32:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16169 states. [2023-11-29 05:32:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16169 to 16167. [2023-11-29 05:32:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16167 states, 16165 states have (on average 1.4373028147231672) internal successors, (23234), 16166 states have internal predecessors, (23234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16167 states to 16167 states and 23234 transitions. [2023-11-29 05:32:04,452 INFO L78 Accepts]: Start accepts. Automaton has 16167 states and 23234 transitions. Word has length 122 [2023-11-29 05:32:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:04,452 INFO L495 AbstractCegarLoop]: Abstraction has 16167 states and 23234 transitions. [2023-11-29 05:32:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16167 states and 23234 transitions. [2023-11-29 05:32:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 05:32:04,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:04,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:32:04,453 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:04,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1480383294, now seen corresponding path program 1 times [2023-11-29 05:32:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791441793] [2023-11-29 05:32:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791441793] [2023-11-29 05:32:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791441793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:32:04,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:32:04,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:32:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546439655] [2023-11-29 05:32:04,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:32:04,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:32:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:32:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:32:04,642 INFO L87 Difference]: Start difference. First operand 16167 states and 23234 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:08,991 INFO L93 Difference]: Finished difference Result 19930 states and 28954 transitions. [2023-11-29 05:32:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:32:08,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-11-29 05:32:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:09,003 INFO L225 Difference]: With dead ends: 19930 [2023-11-29 05:32:09,004 INFO L226 Difference]: Without dead ends: 16924 [2023-11-29 05:32:09,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:32:09,008 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 1530 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 4325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:09,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1963 Invalid, 4325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 05:32:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16924 states. [2023-11-29 05:32:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16924 to 16918. [2023-11-29 05:32:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16918 states, 16916 states have (on average 1.4182430834712698) internal successors, (23991), 16917 states have internal predecessors, (23991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16918 states to 16918 states and 23991 transitions. [2023-11-29 05:32:09,600 INFO L78 Accepts]: Start accepts. Automaton has 16918 states and 23991 transitions. Word has length 122 [2023-11-29 05:32:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:09,600 INFO L495 AbstractCegarLoop]: Abstraction has 16918 states and 23991 transitions. [2023-11-29 05:32:09,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 16918 states and 23991 transitions. [2023-11-29 05:32:09,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 05:32:09,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:09,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:09,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:32:09,602 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:09,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1409940919, now seen corresponding path program 1 times [2023-11-29 05:32:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:09,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173207744] [2023-11-29 05:32:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:09,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:09,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:09,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173207744] [2023-11-29 05:32:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173207744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:32:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:32:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:32:09,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65580673] [2023-11-29 05:32:09,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:32:09,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:32:09,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:32:09,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:09,692 INFO L87 Difference]: Start difference. First operand 16918 states and 23991 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:09,984 INFO L93 Difference]: Finished difference Result 23458 states and 33189 transitions. [2023-11-29 05:32:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:32:09,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-11-29 05:32:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:09,993 INFO L225 Difference]: With dead ends: 23458 [2023-11-29 05:32:09,993 INFO L226 Difference]: Without dead ends: 10384 [2023-11-29 05:32:09,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:09,999 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 56 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:09,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3172 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:32:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2023-11-29 05:32:10,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10382. [2023-11-29 05:32:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10382 states, 10380 states have (on average 1.4180154142581889) internal successors, (14719), 10381 states have internal predecessors, (14719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10382 states to 10382 states and 14719 transitions. [2023-11-29 05:32:10,310 INFO L78 Accepts]: Start accepts. Automaton has 10382 states and 14719 transitions. Word has length 124 [2023-11-29 05:32:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:10,311 INFO L495 AbstractCegarLoop]: Abstraction has 10382 states and 14719 transitions. [2023-11-29 05:32:10,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 10382 states and 14719 transitions. [2023-11-29 05:32:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 05:32:10,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:10,312 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:10,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 05:32:10,312 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:10,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1268580731, now seen corresponding path program 1 times [2023-11-29 05:32:10,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:10,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331274228] [2023-11-29 05:32:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:10,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331274228] [2023-11-29 05:32:10,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331274228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:32:10,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:32:10,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:32:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443318121] [2023-11-29 05:32:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:32:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:32:10,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:32:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:10,399 INFO L87 Difference]: Start difference. First operand 10382 states and 14719 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:10,570 INFO L93 Difference]: Finished difference Result 13654 states and 19281 transitions. [2023-11-29 05:32:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:32:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-11-29 05:32:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:10,576 INFO L225 Difference]: With dead ends: 13654 [2023-11-29 05:32:10,576 INFO L226 Difference]: Without dead ends: 7116 [2023-11-29 05:32:10,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:10,579 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 53 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:10,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3157 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:32:10,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2023-11-29 05:32:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 7114. [2023-11-29 05:32:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7114 states, 7112 states have (on average 1.4230877390326209) internal successors, (10121), 7113 states have internal predecessors, (10121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7114 states to 7114 states and 10121 transitions. [2023-11-29 05:32:10,763 INFO L78 Accepts]: Start accepts. Automaton has 7114 states and 10121 transitions. Word has length 126 [2023-11-29 05:32:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:10,764 INFO L495 AbstractCegarLoop]: Abstraction has 7114 states and 10121 transitions. [2023-11-29 05:32:10,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7114 states and 10121 transitions. [2023-11-29 05:32:10,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 05:32:10,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:10,765 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:10,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 05:32:10,765 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:10,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1899096275, now seen corresponding path program 1 times [2023-11-29 05:32:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:10,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095781269] [2023-11-29 05:32:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:10,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:10,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:10,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095781269] [2023-11-29 05:32:10,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095781269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:32:10,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:32:10,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:32:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268648738] [2023-11-29 05:32:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:32:10,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:32:10,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:32:10,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:10,852 INFO L87 Difference]: Start difference. First operand 7114 states and 10121 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:10,958 INFO L93 Difference]: Finished difference Result 8752 states and 12384 transitions. [2023-11-29 05:32:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:32:10,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2023-11-29 05:32:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:10,963 INFO L225 Difference]: With dead ends: 8752 [2023-11-29 05:32:10,964 INFO L226 Difference]: Without dead ends: 5482 [2023-11-29 05:32:10,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:10,966 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 50 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:10,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3142 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:32:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-11-29 05:32:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5480. [2023-11-29 05:32:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 5478 states have (on average 1.4313618108798831) internal successors, (7841), 5479 states have internal predecessors, (7841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 7841 transitions. [2023-11-29 05:32:11,096 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 7841 transitions. Word has length 128 [2023-11-29 05:32:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:11,097 INFO L495 AbstractCegarLoop]: Abstraction has 5480 states and 7841 transitions. [2023-11-29 05:32:11,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 7841 transitions. [2023-11-29 05:32:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 05:32:11,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:11,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:11,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 05:32:11,098 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:11,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:11,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1374184287, now seen corresponding path program 1 times [2023-11-29 05:32:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:11,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170909048] [2023-11-29 05:32:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:12,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:12,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170909048] [2023-11-29 05:32:12,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170909048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:32:12,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187236956] [2023-11-29 05:32:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:12,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:12,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:12,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:12,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:32:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:12,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:32:12,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:32:12,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:32:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:32:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187236956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:32:13,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:32:13,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 05:32:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139056322] [2023-11-29 05:32:13,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:32:13,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:32:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:13,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:32:13,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:32:13,236 INFO L87 Difference]: Start difference. First operand 5480 states and 7841 transitions. Second operand has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:16,135 INFO L93 Difference]: Finished difference Result 16859 states and 23038 transitions. [2023-11-29 05:32:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 05:32:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-11-29 05:32:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:16,149 INFO L225 Difference]: With dead ends: 16859 [2023-11-29 05:32:16,149 INFO L226 Difference]: Without dead ends: 15223 [2023-11-29 05:32:16,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 05:32:16,154 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 15962 mSDsluCounter, 6748 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15962 SdHoareTripleChecker+Valid, 8304 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:16,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15962 Valid, 8304 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:32:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15223 states. [2023-11-29 05:32:16,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15223 to 14671. [2023-11-29 05:32:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14671 states, 14669 states have (on average 1.3533983229940691) internal successors, (19853), 14670 states have internal predecessors, (19853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14671 states to 14671 states and 19853 transitions. [2023-11-29 05:32:16,715 INFO L78 Accepts]: Start accepts. Automaton has 14671 states and 19853 transitions. Word has length 130 [2023-11-29 05:32:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:16,716 INFO L495 AbstractCegarLoop]: Abstraction has 14671 states and 19853 transitions. [2023-11-29 05:32:16,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 14671 states and 19853 transitions. [2023-11-29 05:32:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 05:32:16,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:16,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:16,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:32:16,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 05:32:16,918 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:16,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:16,918 INFO L85 PathProgramCache]: Analyzing trace with hash -102241525, now seen corresponding path program 1 times [2023-11-29 05:32:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:16,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274360461] [2023-11-29 05:32:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:17,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274360461] [2023-11-29 05:32:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274360461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:32:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423115280] [2023-11-29 05:32:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:17,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:17,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:17,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:32:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:18,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:32:18,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:18,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:32:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423115280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:32:19,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:32:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-11-29 05:32:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160042062] [2023-11-29 05:32:19,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:32:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 05:32:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 05:32:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-11-29 05:32:19,938 INFO L87 Difference]: Start difference. First operand 14671 states and 19853 transitions. Second operand has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:24,498 INFO L93 Difference]: Finished difference Result 64832 states and 86039 transitions. [2023-11-29 05:32:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 05:32:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-11-29 05:32:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:24,550 INFO L225 Difference]: With dead ends: 64832 [2023-11-29 05:32:24,550 INFO L226 Difference]: Without dead ends: 54320 [2023-11-29 05:32:24,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=914, Invalid=3642, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 05:32:24,564 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 29043 mSDsluCounter, 6821 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29043 SdHoareTripleChecker+Valid, 8373 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:24,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29043 Valid, 8373 Invalid, 1129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:32:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54320 states. [2023-11-29 05:32:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54320 to 51820. [2023-11-29 05:32:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51820 states, 51818 states have (on average 1.3188081361688988) internal successors, (68338), 51819 states have internal predecessors, (68338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51820 states to 51820 states and 68338 transitions. [2023-11-29 05:32:26,867 INFO L78 Accepts]: Start accepts. Automaton has 51820 states and 68338 transitions. Word has length 131 [2023-11-29 05:32:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:26,867 INFO L495 AbstractCegarLoop]: Abstraction has 51820 states and 68338 transitions. [2023-11-29 05:32:26,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:26,867 INFO L276 IsEmpty]: Start isEmpty. Operand 51820 states and 68338 transitions. [2023-11-29 05:32:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 05:32:26,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:26,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:26,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:32:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 05:32:27,070 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:27,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1137916661, now seen corresponding path program 1 times [2023-11-29 05:32:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:27,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770462978] [2023-11-29 05:32:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:27,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:28,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:28,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770462978] [2023-11-29 05:32:28,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770462978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:32:28,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423930157] [2023-11-29 05:32:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:28,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:28,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:28,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:28,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:32:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:28,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:32:28,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:29,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:32:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:30,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423930157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:32:30,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:32:30,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2023-11-29 05:32:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634381367] [2023-11-29 05:32:30,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:32:30,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 05:32:30,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 05:32:30,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:32:30,155 INFO L87 Difference]: Start difference. First operand 51820 states and 68338 transitions. Second operand has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:35,199 INFO L93 Difference]: Finished difference Result 149228 states and 195265 transitions. [2023-11-29 05:32:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:32:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-11-29 05:32:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:35,299 INFO L225 Difference]: With dead ends: 149228 [2023-11-29 05:32:35,299 INFO L226 Difference]: Without dead ends: 106624 [2023-11-29 05:32:35,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 05:32:35,320 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 14090 mSDsluCounter, 4998 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14090 SdHoareTripleChecker+Valid, 6548 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:35,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14090 Valid, 6548 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:32:35,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106624 states. [2023-11-29 05:32:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106624 to 101228. [2023-11-29 05:32:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101228 states, 101226 states have (on average 1.2987177207436824) internal successors, (131464), 101227 states have internal predecessors, (131464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:39,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101228 states to 101228 states and 131464 transitions. [2023-11-29 05:32:39,994 INFO L78 Accepts]: Start accepts. Automaton has 101228 states and 131464 transitions. Word has length 131 [2023-11-29 05:32:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:39,995 INFO L495 AbstractCegarLoop]: Abstraction has 101228 states and 131464 transitions. [2023-11-29 05:32:39,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:39,995 INFO L276 IsEmpty]: Start isEmpty. Operand 101228 states and 131464 transitions. [2023-11-29 05:32:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 05:32:39,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:39,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:40,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:32:40,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 05:32:40,200 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:40,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash -197393389, now seen corresponding path program 1 times [2023-11-29 05:32:40,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:40,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548308808] [2023-11-29 05:32:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:41,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548308808] [2023-11-29 05:32:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548308808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:32:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692250698] [2023-11-29 05:32:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:41,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:41,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:41,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:41,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:32:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:41,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:32:41,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:42,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:32:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:43,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692250698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:32:43,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:32:43,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 05:32:43,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379568850] [2023-11-29 05:32:43,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:32:43,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:32:43,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:43,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:32:43,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:32:43,737 INFO L87 Difference]: Start difference. First operand 101228 states and 131464 transitions. Second operand has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:56,678 INFO L93 Difference]: Finished difference Result 309946 states and 398789 transitions. [2023-11-29 05:32:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 05:32:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-11-29 05:32:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:56,869 INFO L225 Difference]: With dead ends: 309946 [2023-11-29 05:32:56,870 INFO L226 Difference]: Without dead ends: 217988 [2023-11-29 05:32:56,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=697, Invalid=2963, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 05:32:56,895 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 17536 mSDsluCounter, 7002 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17536 SdHoareTripleChecker+Valid, 8629 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:56,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17536 Valid, 8629 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 05:32:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217988 states. [2023-11-29 05:33:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217988 to 180894. [2023-11-29 05:33:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180894 states, 180892 states have (on average 1.278138336687084) internal successors, (231205), 180893 states have internal predecessors, (231205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180894 states to 180894 states and 231205 transitions. [2023-11-29 05:33:07,785 INFO L78 Accepts]: Start accepts. Automaton has 180894 states and 231205 transitions. Word has length 132 [2023-11-29 05:33:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:07,786 INFO L495 AbstractCegarLoop]: Abstraction has 180894 states and 231205 transitions. [2023-11-29 05:33:07,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 180894 states and 231205 transitions. [2023-11-29 05:33:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 05:33:07,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:07,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:07,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:33:07,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 05:33:07,990 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:07,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1700480341, now seen corresponding path program 1 times [2023-11-29 05:33:07,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:07,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951751903] [2023-11-29 05:33:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:09,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:09,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951751903] [2023-11-29 05:33:09,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951751903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:09,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017041828] [2023-11-29 05:33:09,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:09,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:09,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:09,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:09,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:33:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:33:09,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:10,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:11,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017041828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:11,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:11,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 05:33:11,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108471626] [2023-11-29 05:33:11,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:11,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:33:11,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:33:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:33:11,360 INFO L87 Difference]: Start difference. First operand 180894 states and 231205 transitions. Second operand has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:39,035 INFO L93 Difference]: Finished difference Result 716362 states and 916983 transitions. [2023-11-29 05:33:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 05:33:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-11-29 05:33:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:39,781 INFO L225 Difference]: With dead ends: 716362 [2023-11-29 05:33:39,781 INFO L226 Difference]: Without dead ends: 552622 [2023-11-29 05:33:39,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=783, Invalid=3507, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 05:33:39,886 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 21743 mSDsluCounter, 8802 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21743 SdHoareTripleChecker+Valid, 10355 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:39,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21743 Valid, 10355 Invalid, 1660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:33:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552622 states. [2023-11-29 05:34:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552622 to 351786. [2023-11-29 05:34:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351786 states, 351784 states have (on average 1.273008436995429) internal successors, (447824), 351785 states have internal predecessors, (447824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351786 states to 351786 states and 447824 transitions. [2023-11-29 05:34:01,239 INFO L78 Accepts]: Start accepts. Automaton has 351786 states and 447824 transitions. Word has length 133 [2023-11-29 05:34:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:01,239 INFO L495 AbstractCegarLoop]: Abstraction has 351786 states and 447824 transitions. [2023-11-29 05:34:01,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 351786 states and 447824 transitions. [2023-11-29 05:34:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 05:34:01,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:01,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:01,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:34:01,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 05:34:01,449 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:01,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1608331027, now seen corresponding path program 1 times [2023-11-29 05:34:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:01,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475648896] [2023-11-29 05:34:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:02,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:02,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475648896] [2023-11-29 05:34:02,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475648896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:02,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752132682] [2023-11-29 05:34:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:02,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:02,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:02,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee08a3f-e171-4de7-b306-c803f8361239/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:34:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:03,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:34:03,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:04,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:34:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:05,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752132682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:34:05,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:34:05,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 05:34:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799857562] [2023-11-29 05:34:05,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:34:05,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:34:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:34:05,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:34:05,850 INFO L87 Difference]: Start difference. First operand 351786 states and 447824 transitions. Second operand has 33 states, 33 states have (on average 11.666666666666666) internal successors, (385), 33 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:35:09,823 INFO L93 Difference]: Finished difference Result 1691662 states and 2161802 transitions. [2023-11-29 05:35:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 05:35:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.666666666666666) internal successors, (385), 33 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-11-29 05:35:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:35:11,519 INFO L225 Difference]: With dead ends: 1691662 [2023-11-29 05:35:11,519 INFO L226 Difference]: Without dead ends: 1353159 [2023-11-29 05:35:12,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1186, Invalid=5134, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 05:35:12,003 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 24475 mSDsluCounter, 10142 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24475 SdHoareTripleChecker+Valid, 11697 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:35:12,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24475 Valid, 11697 Invalid, 1643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 05:35:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353159 states.