./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/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 f5d324be5cda3ace002cd56bcc40157f7761355257d743a63929a31342660554 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:13:52,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:13:52,266 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:13:52,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:13:52,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:13:52,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:13:52,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:13:52,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:13:52,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:13:52,306 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:13:52,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:13:52,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:13:52,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:13:52,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:13:52,309 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:13:52,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:13:52,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:13:52,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:13:52,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:13:52,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:13:52,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:13:52,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:13:52,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:13:52,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:13:52,326 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:13:52,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:13:52,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:13:52,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:13:52,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:13:52,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:13:52,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:13:52,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:13:52,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:13:52,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:13:52,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:13:52,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:13:52,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:13:52,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:13:52,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:13:52,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:13:52,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:13:52,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:13:52,331 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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5d324be5cda3ace002cd56bcc40157f7761355257d743a63929a31342660554 [2023-11-29 02:13:52,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:13:52,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:13:52,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:13:52,588 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:13:52,589 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:13:52,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c [2023-11-29 02:13:55,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:13:55,713 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:13:55,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c [2023-11-29 02:13:55,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/data/6d8c380e4/30d752295d8b4df88778e08853325267/FLAG39b9b02d9 [2023-11-29 02:13:55,759 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/data/6d8c380e4/30d752295d8b4df88778e08853325267 [2023-11-29 02:13:55,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:13:55,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:13:55,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:13:55,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:13:55,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:13:55,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:13:55" (1/1) ... [2023-11-29 02:13:55,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a775a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:55, skipping insertion in model container [2023-11-29 02:13:55,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:13:55" (1/1) ... [2023-11-29 02:13:55,916 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:13:56,254 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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[8712,8725] [2023-11-29 02:13:56,293 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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[11529,11542] [2023-11-29 02:13:57,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:13:57,072 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:13:57,099 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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[8712,8725] [2023-11-29 02:13:57,105 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_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[11529,11542] [2023-11-29 02:13:57,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:13:57,674 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:13:57,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57 WrapperNode [2023-11-29 02:13:57,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:13:57,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:13:57,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:13:57,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:13:57,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:57,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,040 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5034 [2023-11-29 02:13:58,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:13:58,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:13:58,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:13:58,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:13:58,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,221 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 02:13:58,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:13:58,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:13:58,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:13:58,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:13:58,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (1/1) ... [2023-11-29 02:13:58,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:13:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:13:58,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:13:58,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:13:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:13:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:13:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:13:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:13:58,745 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:13:58,748 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:14:03,197 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:14:03,257 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:14:03,258 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 02:14:03,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:14:03 BoogieIcfgContainer [2023-11-29 02:14:03,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:14:03,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:14:03,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:14:03,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:14:03,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:13:55" (1/3) ... [2023-11-29 02:14:03,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae51c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:14:03, skipping insertion in model container [2023-11-29 02:14:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:13:57" (2/3) ... [2023-11-29 02:14:03,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae51c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:14:03, skipping insertion in model container [2023-11-29 02:14:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:14:03" (3/3) ... [2023-11-29 02:14:03,267 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c [2023-11-29 02:14:03,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:14:03,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:14:03,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:14:03,350 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;@3b38c788, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:14:03,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:14:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 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 02:14:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 02:14:03,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:03,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:03,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:03,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1324896968, now seen corresponding path program 1 times [2023-11-29 02:14:03,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943827774] [2023-11-29 02:14:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:03,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:03,589 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 02:14:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943827774] [2023-11-29 02:14:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943827774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:14:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317600724] [2023-11-29 02:14:03,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:03,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:14:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:03,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:14:03,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:14:03,630 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 02:14:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:03,714 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-11-29 02:14:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:14:03,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2023-11-29 02:14:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:03,737 INFO L225 Difference]: With dead ends: 1616 [2023-11-29 02:14:03,737 INFO L226 Difference]: Without dead ends: 818 [2023-11-29 02:14:03,742 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 02:14:03,745 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:03,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-11-29 02:14:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-11-29 02:14:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 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 02:14:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-11-29 02:14:03,825 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-11-29 02:14:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:03,825 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-11-29 02:14:03,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 02:14:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-11-29 02:14:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 02:14:03,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:03,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:03,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:14:03,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:03,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:03,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2023-11-29 02:14:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:03,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54751905] [2023-11-29 02:14:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:03,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:04,052 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 02:14:04,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:04,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54751905] [2023-11-29 02:14:04,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54751905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:14:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113540252] [2023-11-29 02:14:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:14:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:14:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:14:04,055 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 02:14:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:04,141 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2023-11-29 02:14:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:14:04,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2023-11-29 02:14:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:04,148 INFO L225 Difference]: With dead ends: 858 [2023-11-29 02:14:04,148 INFO L226 Difference]: Without dead ends: 818 [2023-11-29 02:14:04,149 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 02:14:04,150 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:04,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-11-29 02:14:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-11-29 02:14:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:14:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2023-11-29 02:14:04,175 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2023-11-29 02:14:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:04,176 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2023-11-29 02:14:04,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 02:14:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2023-11-29 02:14:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 02:14:04,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:04,177 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] [2023-11-29 02:14:04,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:14:04,177 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:04,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1822396511, now seen corresponding path program 1 times [2023-11-29 02:14:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146099983] [2023-11-29 02:14:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:04,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:04,229 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 02:14:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146099983] [2023-11-29 02:14:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146099983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:04,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:04,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:14:04,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196270059] [2023-11-29 02:14:04,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:04,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:04,232 INFO L87 Difference]: Start difference. First operand 818 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 02:14:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:07,938 INFO L93 Difference]: Finished difference Result 2322 states and 4398 transitions. [2023-11-29 02:14:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:07,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2023-11-29 02:14:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:07,946 INFO L225 Difference]: With dead ends: 2322 [2023-11-29 02:14:07,946 INFO L226 Difference]: Without dead ends: 1569 [2023-11-29 02:14:07,948 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 02:14:07,950 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 932 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:07,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 198 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 02:14:07,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-11-29 02:14:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1569. [2023-11-29 02:14:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1567 states have (on average 1.8276962348436503) internal successors, (2864), 1568 states have internal predecessors, (2864), 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 02:14:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2864 transitions. [2023-11-29 02:14:07,994 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2864 transitions. Word has length 23 [2023-11-29 02:14:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:07,994 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2864 transitions. [2023-11-29 02:14:07,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 02:14:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2864 transitions. [2023-11-29 02:14:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 02:14:07,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:07,997 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] [2023-11-29 02:14:07,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:14:07,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:07,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2023-11-29 02:14:07,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:07,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768243862] [2023-11-29 02:14:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:07,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:08,118 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 02:14:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768243862] [2023-11-29 02:14:08,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768243862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:08,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:08,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:14:08,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67029514] [2023-11-29 02:14:08,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:08,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:14:08,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:14:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:14:08,122 INFO L87 Difference]: Start difference. First operand 1569 states and 2864 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 02:14:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:08,310 INFO L93 Difference]: Finished difference Result 1865 states and 3336 transitions. [2023-11-29 02:14:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:14:08,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2023-11-29 02:14:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:08,320 INFO L225 Difference]: With dead ends: 1865 [2023-11-29 02:14:08,320 INFO L226 Difference]: Without dead ends: 1828 [2023-11-29 02:14:08,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:14:08,323 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:08,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:14:08,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2023-11-29 02:14:08,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1604. [2023-11-29 02:14:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.822721598002497) internal successors, (2920), 1603 states have internal predecessors, (2920), 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 02:14:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2920 transitions. [2023-11-29 02:14:08,364 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2920 transitions. Word has length 41 [2023-11-29 02:14:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:08,365 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2920 transitions. [2023-11-29 02:14:08,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 02:14:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2920 transitions. [2023-11-29 02:14:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 02:14:08,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:08,367 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] [2023-11-29 02:14:08,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:14:08,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:08,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2023-11-29 02:14:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:08,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723756350] [2023-11-29 02:14:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:08,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:08,432 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 02:14:08,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:08,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723756350] [2023-11-29 02:14:08,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723756350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:08,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:08,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263169706] [2023-11-29 02:14:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:08,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:08,436 INFO L87 Difference]: Start difference. First operand 1604 states and 2920 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 02:14:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:08,485 INFO L93 Difference]: Finished difference Result 1737 states and 3131 transitions. [2023-11-29 02:14:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:08,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2023-11-29 02:14:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:08,494 INFO L225 Difference]: With dead ends: 1737 [2023-11-29 02:14:08,494 INFO L226 Difference]: Without dead ends: 1665 [2023-11-29 02:14:08,495 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 02:14:08,496 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:08,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:08,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2023-11-29 02:14:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1661. [2023-11-29 02:14:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.8131404460518386) internal successors, (3008), 1660 states have internal predecessors, (3008), 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 02:14:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 3008 transitions. [2023-11-29 02:14:08,536 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 3008 transitions. Word has length 43 [2023-11-29 02:14:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:08,536 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 3008 transitions. [2023-11-29 02:14:08,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 02:14:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 3008 transitions. [2023-11-29 02:14:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 02:14:08,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:08,538 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] [2023-11-29 02:14:08,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:14:08,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:08,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2023-11-29 02:14:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:08,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491273873] [2023-11-29 02:14:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:08,733 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 02:14:08,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:08,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491273873] [2023-11-29 02:14:08,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491273873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:08,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:08,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:14:08,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567393218] [2023-11-29 02:14:08,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:08,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:14:08,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:14:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:14:08,736 INFO L87 Difference]: Start difference. First operand 1661 states and 3008 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 02:14:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:08,877 INFO L93 Difference]: Finished difference Result 1792 states and 3212 transitions. [2023-11-29 02:14:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:14:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2023-11-29 02:14:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:08,888 INFO L225 Difference]: With dead ends: 1792 [2023-11-29 02:14:08,888 INFO L226 Difference]: Without dead ends: 1663 [2023-11-29 02:14:08,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:14:08,890 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 1491 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:08,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1734 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2023-11-29 02:14:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2023-11-29 02:14:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.8119349005424954) internal successors, (3006), 1660 states have internal predecessors, (3006), 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 02:14:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 3006 transitions. [2023-11-29 02:14:08,936 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 3006 transitions. Word has length 43 [2023-11-29 02:14:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:08,937 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 3006 transitions. [2023-11-29 02:14:08,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 02:14:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 3006 transitions. [2023-11-29 02:14:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 02:14:08,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:08,938 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] [2023-11-29 02:14:08,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:14:08,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:08,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:08,939 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2023-11-29 02:14:08,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:08,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588080752] [2023-11-29 02:14:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:08,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:09,093 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 02:14:09,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:09,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588080752] [2023-11-29 02:14:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588080752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:09,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:09,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:14:09,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230124393] [2023-11-29 02:14:09,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:09,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:14:09,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:14:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:14:09,095 INFO L87 Difference]: Start difference. First operand 1661 states and 3006 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 02:14:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:09,146 INFO L93 Difference]: Finished difference Result 1669 states and 3015 transitions. [2023-11-29 02:14:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:14:09,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2023-11-29 02:14:09,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:09,156 INFO L225 Difference]: With dead ends: 1669 [2023-11-29 02:14:09,156 INFO L226 Difference]: Without dead ends: 1667 [2023-11-29 02:14:09,157 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 02:14:09,158 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 02:14:09,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-11-29 02:14:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2023-11-29 02:14:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.809380637402285) internal successors, (3009), 1664 states have internal predecessors, (3009), 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 02:14:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 3009 transitions. [2023-11-29 02:14:09,228 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 3009 transitions. Word has length 44 [2023-11-29 02:14:09,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:09,229 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 3009 transitions. [2023-11-29 02:14:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 02:14:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 3009 transitions. [2023-11-29 02:14:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 02:14:09,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:09,230 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] [2023-11-29 02:14:09,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:14:09,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:09,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2023-11-29 02:14:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:09,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384859101] [2023-11-29 02:14:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:09,277 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 02:14:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384859101] [2023-11-29 02:14:09,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384859101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:09,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:09,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640495553] [2023-11-29 02:14:09,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:09,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:09,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:09,279 INFO L87 Difference]: Start difference. First operand 1665 states and 3009 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 02:14:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:09,321 INFO L93 Difference]: Finished difference Result 1915 states and 3389 transitions. [2023-11-29 02:14:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:09,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2023-11-29 02:14:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:09,332 INFO L225 Difference]: With dead ends: 1915 [2023-11-29 02:14:09,333 INFO L226 Difference]: Without dead ends: 1782 [2023-11-29 02:14:09,334 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 02:14:09,334 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 02:14:09,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2023-11-29 02:14:09,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1780. [2023-11-29 02:14:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1778 states have (on average 1.7885264341957254) internal successors, (3180), 1779 states have internal predecessors, (3180), 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 02:14:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 3180 transitions. [2023-11-29 02:14:09,382 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 3180 transitions. Word has length 45 [2023-11-29 02:14:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:09,382 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 3180 transitions. [2023-11-29 02:14:09,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 02:14:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 3180 transitions. [2023-11-29 02:14:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 02:14:09,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:09,383 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] [2023-11-29 02:14:09,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:14:09,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:09,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2023-11-29 02:14:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:09,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115994615] [2023-11-29 02:14:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:09,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:09,428 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 02:14:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115994615] [2023-11-29 02:14:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115994615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:09,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:09,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:09,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726360905] [2023-11-29 02:14:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:09,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:09,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:09,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:09,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:09,430 INFO L87 Difference]: Start difference. First operand 1780 states and 3180 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 02:14:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:09,477 INFO L93 Difference]: Finished difference Result 2244 states and 3874 transitions. [2023-11-29 02:14:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:09,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2023-11-29 02:14:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:09,488 INFO L225 Difference]: With dead ends: 2244 [2023-11-29 02:14:09,489 INFO L226 Difference]: Without dead ends: 1996 [2023-11-29 02:14:09,490 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 02:14:09,490 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 02:14:09,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2023-11-29 02:14:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1994. [2023-11-29 02:14:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1992 states have (on average 1.752008032128514) internal successors, (3490), 1993 states have internal predecessors, (3490), 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 02:14:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 3490 transitions. [2023-11-29 02:14:09,546 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 3490 transitions. Word has length 45 [2023-11-29 02:14:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:09,547 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 3490 transitions. [2023-11-29 02:14:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 02:14:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 3490 transitions. [2023-11-29 02:14:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 02:14:09,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:09,548 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] [2023-11-29 02:14:09,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:14:09,548 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:09,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2023-11-29 02:14:09,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:09,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702751925] [2023-11-29 02:14:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:09,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:09,591 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 02:14:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702751925] [2023-11-29 02:14:09,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702751925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:09,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717083239] [2023-11-29 02:14:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:09,593 INFO L87 Difference]: Start difference. First operand 1994 states and 3490 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 02:14:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:09,648 INFO L93 Difference]: Finished difference Result 2854 states and 4748 transitions. [2023-11-29 02:14:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:09,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2023-11-29 02:14:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:09,662 INFO L225 Difference]: With dead ends: 2854 [2023-11-29 02:14:09,662 INFO L226 Difference]: Without dead ends: 2392 [2023-11-29 02:14:09,663 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 02:14:09,664 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 02:14:09,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2023-11-29 02:14:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2390. [2023-11-29 02:14:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2388 states have (on average 1.6943048576214406) internal successors, (4046), 2389 states have internal predecessors, (4046), 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 02:14:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 4046 transitions. [2023-11-29 02:14:09,738 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 4046 transitions. Word has length 45 [2023-11-29 02:14:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:09,738 INFO L495 AbstractCegarLoop]: Abstraction has 2390 states and 4046 transitions. [2023-11-29 02:14:09,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 02:14:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 4046 transitions. [2023-11-29 02:14:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 02:14:09,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:09,739 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 02:14:09,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:14:09,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:09,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:09,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2023-11-29 02:14:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:09,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467745269] [2023-11-29 02:14:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:09,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:09,779 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 02:14:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467745269] [2023-11-29 02:14:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467745269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923158343] [2023-11-29 02:14:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:09,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:09,782 INFO L87 Difference]: Start difference. First operand 2390 states and 4046 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 02:14:09,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:09,849 INFO L93 Difference]: Finished difference Result 3293 states and 5380 transitions. [2023-11-29 02:14:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:09,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 02:14:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:09,865 INFO L225 Difference]: With dead ends: 3293 [2023-11-29 02:14:09,865 INFO L226 Difference]: Without dead ends: 2794 [2023-11-29 02:14:09,867 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 02:14:09,867 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 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 02:14:09,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2023-11-29 02:14:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2792. [2023-11-29 02:14:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2790 states have (on average 1.6544802867383512) internal successors, (4616), 2791 states have internal predecessors, (4616), 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 02:14:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4616 transitions. [2023-11-29 02:14:09,956 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4616 transitions. Word has length 47 [2023-11-29 02:14:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:09,956 INFO L495 AbstractCegarLoop]: Abstraction has 2792 states and 4616 transitions. [2023-11-29 02:14:09,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 02:14:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4616 transitions. [2023-11-29 02:14:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 02:14:09,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:09,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:09,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:14:09,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:09,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:09,959 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2023-11-29 02:14:09,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:09,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955419003] [2023-11-29 02:14:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:14:10,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:10,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955419003] [2023-11-29 02:14:10,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955419003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:10,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:10,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:14:10,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830845644] [2023-11-29 02:14:10,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:10,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:14:10,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:10,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:14:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:14:10,081 INFO L87 Difference]: Start difference. First operand 2792 states and 4616 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:14:10,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:10,348 INFO L93 Difference]: Finished difference Result 8098 states and 12229 transitions. [2023-11-29 02:14:10,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:14:10,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 02:14:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:10,382 INFO L225 Difference]: With dead ends: 8098 [2023-11-29 02:14:10,382 INFO L226 Difference]: Without dead ends: 6840 [2023-11-29 02:14:10,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:14:10,386 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4653 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:10,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 3347 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:14:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2023-11-29 02:14:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 4048. [2023-11-29 02:14:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 4046 states have (on average 1.5818091942659416) internal successors, (6400), 4047 states have internal predecessors, (6400), 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 02:14:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 6400 transitions. [2023-11-29 02:14:10,599 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 6400 transitions. Word has length 61 [2023-11-29 02:14:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:10,599 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 6400 transitions. [2023-11-29 02:14:10,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:14:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 6400 transitions. [2023-11-29 02:14:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 02:14:10,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:10,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:14:10,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:10,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2023-11-29 02:14:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855298994] [2023-11-29 02:14:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:14:10,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:10,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855298994] [2023-11-29 02:14:10,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855298994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:10,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:10,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:14:10,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707433005] [2023-11-29 02:14:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:10,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:14:10,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:10,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:14:10,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:14:10,722 INFO L87 Difference]: Start difference. First operand 4048 states and 6400 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 02:14:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:11,022 INFO L93 Difference]: Finished difference Result 9354 states and 14013 transitions. [2023-11-29 02:14:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:14:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 02:14:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:11,041 INFO L225 Difference]: With dead ends: 9354 [2023-11-29 02:14:11,041 INFO L226 Difference]: Without dead ends: 8096 [2023-11-29 02:14:11,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:14:11,045 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4681 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:11,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3284 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:14:11,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2023-11-29 02:14:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 5936. [2023-11-29 02:14:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5934 states have (on average 1.5261206605999327) internal successors, (9056), 5935 states have internal predecessors, (9056), 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 02:14:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 9056 transitions. [2023-11-29 02:14:11,271 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 9056 transitions. Word has length 61 [2023-11-29 02:14:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:11,272 INFO L495 AbstractCegarLoop]: Abstraction has 5936 states and 9056 transitions. [2023-11-29 02:14:11,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 02:14:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 9056 transitions. [2023-11-29 02:14:11,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 02:14:11,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:11,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:14:11,274 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:11,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2023-11-29 02:14:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500653272] [2023-11-29 02:14:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 02:14:11,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500653272] [2023-11-29 02:14:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500653272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:11,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:14:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328133864] [2023-11-29 02:14:11,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:11,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:14:11,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:14:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:14:11,394 INFO L87 Difference]: Start difference. First operand 5936 states and 9056 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:14:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:11,778 INFO L93 Difference]: Finished difference Result 10610 states and 15797 transitions. [2023-11-29 02:14:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:14:11,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 02:14:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:11,796 INFO L225 Difference]: With dead ends: 10610 [2023-11-29 02:14:11,797 INFO L226 Difference]: Without dead ends: 9352 [2023-11-29 02:14:11,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:14:11,801 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4663 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:11,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 3316 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:14:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2023-11-29 02:14:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 7192. [2023-11-29 02:14:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7192 states, 7190 states have (on average 1.5076495132127956) internal successors, (10840), 7191 states have internal predecessors, (10840), 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 02:14:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7192 states to 7192 states and 10840 transitions. [2023-11-29 02:14:12,038 INFO L78 Accepts]: Start accepts. Automaton has 7192 states and 10840 transitions. Word has length 61 [2023-11-29 02:14:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:12,038 INFO L495 AbstractCegarLoop]: Abstraction has 7192 states and 10840 transitions. [2023-11-29 02:14:12,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:14:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7192 states and 10840 transitions. [2023-11-29 02:14:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 02:14:12,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:12,040 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] [2023-11-29 02:14:12,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:14:12,041 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:12,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:12,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2023-11-29 02:14:12,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:12,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859382896] [2023-11-29 02:14:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:12,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:12,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:12,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859382896] [2023-11-29 02:14:12,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859382896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:12,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:12,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:12,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804307524] [2023-11-29 02:14:12,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:12,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:12,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:12,138 INFO L87 Difference]: Start difference. First operand 7192 states and 10840 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:14:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:12,287 INFO L93 Difference]: Finished difference Result 11245 states and 16692 transitions. [2023-11-29 02:14:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 02:14:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:12,298 INFO L225 Difference]: With dead ends: 11245 [2023-11-29 02:14:12,298 INFO L226 Difference]: Without dead ends: 5587 [2023-11-29 02:14:12,305 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 02:14:12,305 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 02:14:12,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2023-11-29 02:14:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5585. [2023-11-29 02:14:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5583 states have (on average 1.537703743507075) internal successors, (8585), 5584 states have internal predecessors, (8585), 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 02:14:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 8585 transitions. [2023-11-29 02:14:12,450 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 8585 transitions. Word has length 63 [2023-11-29 02:14:12,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:12,450 INFO L495 AbstractCegarLoop]: Abstraction has 5585 states and 8585 transitions. [2023-11-29 02:14:12,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:14:12,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 8585 transitions. [2023-11-29 02:14:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 02:14:12,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:12,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:12,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:14:12,452 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:12,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2023-11-29 02:14:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643865045] [2023-11-29 02:14:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:14:12,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:12,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643865045] [2023-11-29 02:14:12,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643865045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:12,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:12,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:14:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994169547] [2023-11-29 02:14:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:14:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:14:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:14:12,570 INFO L87 Difference]: Start difference. First operand 5585 states and 8585 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 02:14:12,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:12,914 INFO L93 Difference]: Finished difference Result 9179 states and 13774 transitions. [2023-11-29 02:14:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:14:12,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 02:14:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:12,932 INFO L225 Difference]: With dead ends: 9179 [2023-11-29 02:14:12,933 INFO L226 Difference]: Without dead ends: 8281 [2023-11-29 02:14:12,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:14:12,937 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 4657 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:12,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:14:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2023-11-29 02:14:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 6481. [2023-11-29 02:14:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6479 states have (on average 1.5226115141225498) internal successors, (9865), 6480 states have internal predecessors, (9865), 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 02:14:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 9865 transitions. [2023-11-29 02:14:13,166 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 9865 transitions. Word has length 63 [2023-11-29 02:14:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:13,166 INFO L495 AbstractCegarLoop]: Abstraction has 6481 states and 9865 transitions. [2023-11-29 02:14:13,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 02:14:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 9865 transitions. [2023-11-29 02:14:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 02:14:13,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:13,168 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] [2023-11-29 02:14:13,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:14:13,168 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:13,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:13,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2023-11-29 02:14:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:13,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145423221] [2023-11-29 02:14:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:13,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145423221] [2023-11-29 02:14:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145423221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:13,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821705454] [2023-11-29 02:14:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:13,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:13,260 INFO L87 Difference]: Start difference. First operand 6481 states and 9865 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 02:14:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:13,356 INFO L93 Difference]: Finished difference Result 8949 states and 13387 transitions. [2023-11-29 02:14:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-11-29 02:14:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:13,364 INFO L225 Difference]: With dead ends: 8949 [2023-11-29 02:14:13,364 INFO L226 Difference]: Without dead ends: 4019 [2023-11-29 02:14:13,368 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 02:14:13,369 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 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 02:14:13,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-11-29 02:14:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4017. [2023-11-29 02:14:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 4015 states have (on average 1.5693648816936487) internal successors, (6301), 4016 states have internal predecessors, (6301), 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 02:14:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6301 transitions. [2023-11-29 02:14:13,473 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6301 transitions. Word has length 64 [2023-11-29 02:14:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:13,473 INFO L495 AbstractCegarLoop]: Abstraction has 4017 states and 6301 transitions. [2023-11-29 02:14:13,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 02:14:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6301 transitions. [2023-11-29 02:14:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 02:14:13,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:13,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:13,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:14:13,476 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:13,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2023-11-29 02:14:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918082704] [2023-11-29 02:14:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:13,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918082704] [2023-11-29 02:14:13,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918082704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:13,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:13,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:13,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754479317] [2023-11-29 02:14:13,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:13,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:13,566 INFO L87 Difference]: Start difference. First operand 4017 states and 6301 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 02:14:13,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:13,629 INFO L93 Difference]: Finished difference Result 5253 states and 8041 transitions. [2023-11-29 02:14:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:13,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2023-11-29 02:14:13,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:13,635 INFO L225 Difference]: With dead ends: 5253 [2023-11-29 02:14:13,636 INFO L226 Difference]: Without dead ends: 2787 [2023-11-29 02:14:13,638 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 02:14:13,639 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 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 02:14:13,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2023-11-29 02:14:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2023-11-29 02:14:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.6316924182536832) internal successors, (4541), 2784 states have internal predecessors, (4541), 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 02:14:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4541 transitions. [2023-11-29 02:14:13,703 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4541 transitions. Word has length 66 [2023-11-29 02:14:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:13,703 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 4541 transitions. [2023-11-29 02:14:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 02:14:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4541 transitions. [2023-11-29 02:14:13,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 02:14:13,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:13,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:13,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:14:13,705 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:13,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2023-11-29 02:14:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:13,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137169547] [2023-11-29 02:14:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:13,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137169547] [2023-11-29 02:14:13,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137169547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:13,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:13,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:13,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652511079] [2023-11-29 02:14:13,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:13,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:13,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:13,795 INFO L87 Difference]: Start difference. First operand 2785 states and 4541 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 02:14:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:13,857 INFO L93 Difference]: Finished difference Result 3405 states and 5401 transitions. [2023-11-29 02:14:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:13,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2023-11-29 02:14:13,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:13,862 INFO L225 Difference]: With dead ends: 3405 [2023-11-29 02:14:13,862 INFO L226 Difference]: Without dead ends: 2171 [2023-11-29 02:14:13,864 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 02:14:13,864 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 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 02:14:13,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:13,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2023-11-29 02:14:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2023-11-29 02:14:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.694508537148131) internal successors, (3672), 2168 states have internal predecessors, (3672), 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 02:14:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3672 transitions. [2023-11-29 02:14:13,910 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3672 transitions. Word has length 68 [2023-11-29 02:14:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:13,910 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3672 transitions. [2023-11-29 02:14:13,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 02:14:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3672 transitions. [2023-11-29 02:14:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 02:14:13,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:13,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:13,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:14:13,912 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:13,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2023-11-29 02:14:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:13,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235658173] [2023-11-29 02:14:13,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:13,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235658173] [2023-11-29 02:14:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235658173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:14:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927806547] [2023-11-29 02:14:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:15,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:15,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:15,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:15,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:14:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:16,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 02:14:16,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:14:16,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:14:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:14:16,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927806547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:14:16,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:14:16,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 02:14:16,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114816012] [2023-11-29 02:14:16,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:14:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:14:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:14:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:14:16,443 INFO L87 Difference]: Start difference. First operand 2169 states and 3672 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 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 02:14:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:19,218 INFO L93 Difference]: Finished difference Result 6492 states and 9419 transitions. [2023-11-29 02:14:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 02:14:19,218 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 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 70 [2023-11-29 02:14:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:19,225 INFO L225 Difference]: With dead ends: 6492 [2023-11-29 02:14:19,225 INFO L226 Difference]: Without dead ends: 5874 [2023-11-29 02:14:19,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 02:14:19,228 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 15831 mSDsluCounter, 6270 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15831 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:19,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15831 Valid, 7776 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:14:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2023-11-29 02:14:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5630. [2023-11-29 02:14:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 1.4305259417199716) internal successors, (8051), 5629 states have internal predecessors, (8051), 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 02:14:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 8051 transitions. [2023-11-29 02:14:19,426 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 8051 transitions. Word has length 70 [2023-11-29 02:14:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:19,426 INFO L495 AbstractCegarLoop]: Abstraction has 5630 states and 8051 transitions. [2023-11-29 02:14:19,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 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 02:14:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 8051 transitions. [2023-11-29 02:14:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 02:14:19,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:19,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:19,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:14:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:19,635 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:19,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2128128912, now seen corresponding path program 1 times [2023-11-29 02:14:19,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:19,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055460379] [2023-11-29 02:14:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055460379] [2023-11-29 02:14:21,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055460379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:14:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143715114] [2023-11-29 02:14:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:21,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:21,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:21,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:14:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:21,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:14:21,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:22,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:14:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:23,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143715114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:14:23,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:14:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 02:14:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679332355] [2023-11-29 02:14:23,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:14:23,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 02:14:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 02:14:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-29 02:14:23,361 INFO L87 Difference]: Start difference. First operand 5630 states and 8051 transitions. Second operand has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 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 02:14:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:25,417 INFO L93 Difference]: Finished difference Result 23284 states and 30570 transitions. [2023-11-29 02:14:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:14:25,417 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 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 71 [2023-11-29 02:14:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:25,440 INFO L225 Difference]: With dead ends: 23284 [2023-11-29 02:14:25,440 INFO L226 Difference]: Without dead ends: 19698 [2023-11-29 02:14:25,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=565, Invalid=2515, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 02:14:25,446 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 20453 mSDsluCounter, 8006 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20453 SdHoareTripleChecker+Valid, 9503 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20453 Valid, 9503 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:14:25,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19698 states. [2023-11-29 02:14:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 17580. [2023-11-29 02:14:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17580 states, 17578 states have (on average 1.3247809762202754) internal successors, (23287), 17579 states have internal predecessors, (23287), 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 02:14:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17580 states to 17580 states and 23287 transitions. [2023-11-29 02:14:26,115 INFO L78 Accepts]: Start accepts. Automaton has 17580 states and 23287 transitions. Word has length 71 [2023-11-29 02:14:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:26,115 INFO L495 AbstractCegarLoop]: Abstraction has 17580 states and 23287 transitions. [2023-11-29 02:14:26,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 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 02:14:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 17580 states and 23287 transitions. [2023-11-29 02:14:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 02:14:26,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:26,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:26,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:14:26,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:26,318 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:26,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:26,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000624, now seen corresponding path program 1 times [2023-11-29 02:14:26,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:26,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846229915] [2023-11-29 02:14:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:26,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:26,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846229915] [2023-11-29 02:14:26,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846229915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:14:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746426280] [2023-11-29 02:14:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:26,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:26,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:26,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:14:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:26,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:14:26,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:28,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:14:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746426280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:14:29,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:14:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2023-11-29 02:14:29,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156241558] [2023-11-29 02:14:29,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:14:29,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 02:14:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 02:14:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-11-29 02:14:29,455 INFO L87 Difference]: Start difference. First operand 17580 states and 23287 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 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 02:14:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:31,935 INFO L93 Difference]: Finished difference Result 35020 states and 45536 transitions. [2023-11-29 02:14:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 02:14:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 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 71 [2023-11-29 02:14:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:31,953 INFO L225 Difference]: With dead ends: 35020 [2023-11-29 02:14:31,953 INFO L226 Difference]: Without dead ends: 19773 [2023-11-29 02:14:31,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 02:14:31,968 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 11521 mSDsluCounter, 13678 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11521 SdHoareTripleChecker+Valid, 15172 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:31,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11521 Valid, 15172 Invalid, 737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:14:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19773 states. [2023-11-29 02:14:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19773 to 12174. [2023-11-29 02:14:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12172 states have (on average 1.333963194216234) internal successors, (16237), 12173 states have internal predecessors, (16237), 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 02:14:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 16237 transitions. [2023-11-29 02:14:32,384 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 16237 transitions. Word has length 71 [2023-11-29 02:14:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:32,384 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 16237 transitions. [2023-11-29 02:14:32,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 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 02:14:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 16237 transitions. [2023-11-29 02:14:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 02:14:32,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:32,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:32,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:14:32,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 02:14:32,586 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:32,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:32,586 INFO L85 PathProgramCache]: Analyzing trace with hash -530731481, now seen corresponding path program 1 times [2023-11-29 02:14:32,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:32,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095876378] [2023-11-29 02:14:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:32,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:33,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:33,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095876378] [2023-11-29 02:14:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095876378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:14:33,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013958888] [2023-11-29 02:14:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:33,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:33,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:33,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:33,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:14:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:33,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:14:33,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:33,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:14:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:34,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013958888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:14:34,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:14:34,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 02:14:34,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688445210] [2023-11-29 02:14:34,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:14:34,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 02:14:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 02:14:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-11-29 02:14:34,520 INFO L87 Difference]: Start difference. First operand 12174 states and 16237 transitions. Second operand has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 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 02:14:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:38,142 INFO L93 Difference]: Finished difference Result 39419 states and 50496 transitions. [2023-11-29 02:14:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 02:14:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 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 72 [2023-11-29 02:14:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:38,165 INFO L225 Difference]: With dead ends: 39419 [2023-11-29 02:14:38,165 INFO L226 Difference]: Without dead ends: 29493 [2023-11-29 02:14:38,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 02:14:38,174 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 19738 mSDsluCounter, 8056 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19738 SdHoareTripleChecker+Valid, 9568 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:38,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19738 Valid, 9568 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:14:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29493 states. [2023-11-29 02:14:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29493 to 16037. [2023-11-29 02:14:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16037 states, 16035 states have (on average 1.2936700966635486) internal successors, (20744), 16036 states have internal predecessors, (20744), 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 02:14:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16037 states to 16037 states and 20744 transitions. [2023-11-29 02:14:38,884 INFO L78 Accepts]: Start accepts. Automaton has 16037 states and 20744 transitions. Word has length 72 [2023-11-29 02:14:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:38,885 INFO L495 AbstractCegarLoop]: Abstraction has 16037 states and 20744 transitions. [2023-11-29 02:14:38,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 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 02:14:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 16037 states and 20744 transitions. [2023-11-29 02:14:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 02:14:38,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:38,886 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:14:38,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 02:14:39,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 02:14:39,087 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:39,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2023-11-29 02:14:39,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:39,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121788987] [2023-11-29 02:14:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:39,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121788987] [2023-11-29 02:14:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121788987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:14:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188931144] [2023-11-29 02:14:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:39,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:39,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:39,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:39,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:14:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:39,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 02:14:39,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:42,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:14:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:14:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188931144] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:14:44,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:14:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2023-11-29 02:14:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309962195] [2023-11-29 02:14:44,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:14:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 02:14:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 02:14:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 02:14:44,432 INFO L87 Difference]: Start difference. First operand 16037 states and 20744 transitions. Second operand has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 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 02:15:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:06,731 INFO L93 Difference]: Finished difference Result 38268 states and 47988 transitions. [2023-11-29 02:15:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-11-29 02:15:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 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 73 [2023-11-29 02:15:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:06,751 INFO L225 Difference]: With dead ends: 38268 [2023-11-29 02:15:06,752 INFO L226 Difference]: Without dead ends: 29714 [2023-11-29 02:15:06,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11203 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=6000, Invalid=23070, Unknown=0, NotChecked=0, Total=29070 [2023-11-29 02:15:06,765 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 12169 mSDsluCounter, 16022 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12169 SdHoareTripleChecker+Valid, 17567 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:06,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12169 Valid, 17567 Invalid, 1964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:15:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29714 states. [2023-11-29 02:15:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29714 to 22110. [2023-11-29 02:15:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22110 states, 22108 states have (on average 1.2729328749773838) internal successors, (28142), 22109 states have internal predecessors, (28142), 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 02:15:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22110 states to 22110 states and 28142 transitions. [2023-11-29 02:15:08,002 INFO L78 Accepts]: Start accepts. Automaton has 22110 states and 28142 transitions. Word has length 73 [2023-11-29 02:15:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:08,002 INFO L495 AbstractCegarLoop]: Abstraction has 22110 states and 28142 transitions. [2023-11-29 02:15:08,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 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 02:15:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 22110 states and 28142 transitions. [2023-11-29 02:15:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 02:15:08,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:08,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:08,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:15:08,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 02:15:08,204 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:08,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash -101681833, now seen corresponding path program 1 times [2023-11-29 02:15:08,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:08,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124074168] [2023-11-29 02:15:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:08,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124074168] [2023-11-29 02:15:08,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124074168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:15:08,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307539089] [2023-11-29 02:15:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:08,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:08,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:08,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:15:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:08,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:15:08,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:09,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307539089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:10,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:15:10,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-11-29 02:15:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858195485] [2023-11-29 02:15:10,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:10,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 02:15:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:10,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 02:15:10,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2023-11-29 02:15:10,708 INFO L87 Difference]: Start difference. First operand 22110 states and 28142 transitions. Second operand has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 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 02:15:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:14,996 INFO L93 Difference]: Finished difference Result 57878 states and 72071 transitions. [2023-11-29 02:15:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:15:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 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 74 [2023-11-29 02:15:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:15,027 INFO L225 Difference]: With dead ends: 57878 [2023-11-29 02:15:15,027 INFO L226 Difference]: Without dead ends: 48564 [2023-11-29 02:15:15,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=630, Invalid=2232, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 02:15:15,035 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 14516 mSDsluCounter, 15269 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14516 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:15,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14516 Valid, 16788 Invalid, 846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:15:15,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48564 states. [2023-11-29 02:15:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48564 to 31168. [2023-11-29 02:15:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31168 states, 31166 states have (on average 1.2558236539819034) internal successors, (39139), 31167 states have internal predecessors, (39139), 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 02:15:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31168 states to 31168 states and 39139 transitions. [2023-11-29 02:15:16,936 INFO L78 Accepts]: Start accepts. Automaton has 31168 states and 39139 transitions. Word has length 74 [2023-11-29 02:15:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:16,936 INFO L495 AbstractCegarLoop]: Abstraction has 31168 states and 39139 transitions. [2023-11-29 02:15:16,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 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 02:15:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31168 states and 39139 transitions. [2023-11-29 02:15:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 02:15:16,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:16,938 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] [2023-11-29 02:15:16,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:15:17,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 02:15:17,139 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:17,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1351003409, now seen corresponding path program 1 times [2023-11-29 02:15:17,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:17,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594387121] [2023-11-29 02:15:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:17,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:17,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594387121] [2023-11-29 02:15:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594387121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:17,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:17,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:17,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735151688] [2023-11-29 02:15:17,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:17,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:15:17,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:15:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:15:17,279 INFO L87 Difference]: Start difference. First operand 31168 states and 39139 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 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 02:15:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:25,326 INFO L93 Difference]: Finished difference Result 34925 states and 46029 transitions. [2023-11-29 02:15:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:15:25,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2023-11-29 02:15:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:25,349 INFO L225 Difference]: With dead ends: 34925 [2023-11-29 02:15:25,349 INFO L226 Difference]: Without dead ends: 33421 [2023-11-29 02:15:25,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:15:25,354 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 2348 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 6305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:25,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 794 Invalid, 6305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 02:15:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33421 states. [2023-11-29 02:15:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33421 to 33421. [2023-11-29 02:15:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33421 states, 33419 states have (on average 1.2647894910081092) internal successors, (42268), 33420 states have internal predecessors, (42268), 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 02:15:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33421 states to 33421 states and 42268 transitions. [2023-11-29 02:15:27,293 INFO L78 Accepts]: Start accepts. Automaton has 33421 states and 42268 transitions. Word has length 92 [2023-11-29 02:15:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:27,293 INFO L495 AbstractCegarLoop]: Abstraction has 33421 states and 42268 transitions. [2023-11-29 02:15:27,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 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 02:15:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 33421 states and 42268 transitions. [2023-11-29 02:15:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 02:15:27,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:27,295 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] [2023-11-29 02:15:27,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 02:15:27,295 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:27,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2056023476, now seen corresponding path program 1 times [2023-11-29 02:15:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105169721] [2023-11-29 02:15:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:27,451 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 02:15:27,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:27,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105169721] [2023-11-29 02:15:27,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105169721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:15:27,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713745129] [2023-11-29 02:15:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:27,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:27,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:27,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:27,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:15:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:27,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:15:27,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:27,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:27,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713745129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:27,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:15:27,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 02:15:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445289366] [2023-11-29 02:15:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:27,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:27,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:27,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:15:27,582 INFO L87 Difference]: Start difference. First operand 33421 states and 42268 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 02:15:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:33,167 INFO L93 Difference]: Finished difference Result 40182 states and 53320 transitions. [2023-11-29 02:15:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:33,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2023-11-29 02:15:33,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:33,194 INFO L225 Difference]: With dead ends: 40182 [2023-11-29 02:15:33,194 INFO L226 Difference]: Without dead ends: 36425 [2023-11-29 02:15:33,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:15:33,202 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 863 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:33,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 557 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:15:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36425 states. [2023-11-29 02:15:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36425 to 36425. [2023-11-29 02:15:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36425 states, 36423 states have (on average 1.2627186118661284) internal successors, (45992), 36424 states have internal predecessors, (45992), 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 02:15:35,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36425 states to 36425 states and 45992 transitions. [2023-11-29 02:15:35,266 INFO L78 Accepts]: Start accepts. Automaton has 36425 states and 45992 transitions. Word has length 94 [2023-11-29 02:15:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:35,266 INFO L495 AbstractCegarLoop]: Abstraction has 36425 states and 45992 transitions. [2023-11-29 02:15:35,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 02:15:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 36425 states and 45992 transitions. [2023-11-29 02:15:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 02:15:35,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:35,272 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:15:35,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:15:35,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 02:15:35,473 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:35,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1573587989, now seen corresponding path program 1 times [2023-11-29 02:15:35,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:35,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289457486] [2023-11-29 02:15:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:36,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289457486] [2023-11-29 02:15:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289457486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:15:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345040592] [2023-11-29 02:15:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:36,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:36,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:36,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:15:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:36,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:15:36,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:37,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345040592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:39,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:15:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-11-29 02:15:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465730389] [2023-11-29 02:15:39,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 02:15:39,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 02:15:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 02:15:39,449 INFO L87 Difference]: Start difference. First operand 36425 states and 45992 transitions. Second operand has 36 states, 36 states have (on average 9.055555555555555) internal successors, (326), 35 states have internal predecessors, (326), 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 02:15:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:56,215 INFO L93 Difference]: Finished difference Result 86292 states and 107203 transitions. [2023-11-29 02:15:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-11-29 02:15:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 9.055555555555555) internal successors, (326), 35 states have internal predecessors, (326), 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 02:15:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:56,264 INFO L225 Difference]: With dead ends: 86292 [2023-11-29 02:15:56,264 INFO L226 Difference]: Without dead ends: 62643 [2023-11-29 02:15:56,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11222 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4678, Invalid=28628, Unknown=0, NotChecked=0, Total=33306 [2023-11-29 02:15:56,282 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 24389 mSDsluCounter, 17938 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24389 SdHoareTripleChecker+Valid, 19496 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:56,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24389 Valid, 19496 Invalid, 2590 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:15:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62643 states. [2023-11-29 02:16:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62643 to 58763. [2023-11-29 02:16:00,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58763 states, 58761 states have (on average 1.2355473868722453) internal successors, (72602), 58762 states have internal predecessors, (72602), 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 02:16:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58763 states to 58763 states and 72602 transitions. [2023-11-29 02:16:00,193 INFO L78 Accepts]: Start accepts. Automaton has 58763 states and 72602 transitions. Word has length 117 [2023-11-29 02:16:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:00,193 INFO L495 AbstractCegarLoop]: Abstraction has 58763 states and 72602 transitions. [2023-11-29 02:16:00,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.055555555555555) internal successors, (326), 35 states have internal predecessors, (326), 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 02:16:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 58763 states and 72602 transitions. [2023-11-29 02:16:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 02:16:00,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:00,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:16:00,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:16:00,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 02:16:00,398 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:00,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2083309595, now seen corresponding path program 1 times [2023-11-29 02:16:00,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:00,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018205867] [2023-11-29 02:16:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:00,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018205867] [2023-11-29 02:16:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018205867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367107009] [2023-11-29 02:16:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:02,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:02,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:02,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:02,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:16:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:02,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 02:16:02,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:06,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:13,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367107009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:13,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:13,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2023-11-29 02:16:13,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640795700] [2023-11-29 02:16:13,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:13,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-29 02:16:13,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-29 02:16:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=4772, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 02:16:13,302 INFO L87 Difference]: Start difference. First operand 58763 states and 72602 transitions. Second operand has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 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 02:21:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:21:46,869 INFO L93 Difference]: Finished difference Result 135030 states and 164789 transitions. [2023-11-29 02:21:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 670 states. [2023-11-29 02:21:46,870 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 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 119 [2023-11-29 02:21:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:21:46,967 INFO L225 Difference]: With dead ends: 135030 [2023-11-29 02:21:46,967 INFO L226 Difference]: Without dead ends: 117993 [2023-11-29 02:21:47,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 737 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232572 ImplicationChecksByTransitivity, 297.9s TimeCoverageRelationStatistics Valid=39101, Invalid=506281, Unknown=0, NotChecked=0, Total=545382 [2023-11-29 02:21:47,015 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 31856 mSDsluCounter, 60849 mSDsCounter, 0 mSdLazyCounter, 20048 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31856 SdHoareTripleChecker+Valid, 62750 SdHoareTripleChecker+Invalid, 20539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 20048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:21:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31856 Valid, 62750 Invalid, 20539 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [491 Valid, 20048 Invalid, 0 Unknown, 0 Unchecked, 27.5s Time] [2023-11-29 02:21:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117993 states. [2023-11-29 02:21:55,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117993 to 80882. [2023-11-29 02:21:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80882 states, 80880 states have (on average 1.2250989119683482) internal successors, (99086), 80881 states have internal predecessors, (99086), 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 02:21:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80882 states to 80882 states and 99086 transitions. [2023-11-29 02:21:55,140 INFO L78 Accepts]: Start accepts. Automaton has 80882 states and 99086 transitions. Word has length 119 [2023-11-29 02:21:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:21:55,140 INFO L495 AbstractCegarLoop]: Abstraction has 80882 states and 99086 transitions. [2023-11-29 02:21:55,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 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 02:21:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 80882 states and 99086 transitions. [2023-11-29 02:21:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:21:55,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:21:55,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:21:55,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:21:55,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 02:21:55,346 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:21:55,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash -970063708, now seen corresponding path program 1 times [2023-11-29 02:21:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:55,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253401345] [2023-11-29 02:21:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 02:21:56,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:56,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253401345] [2023-11-29 02:21:56,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253401345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:21:56,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550048547] [2023-11-29 02:21:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:56,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:21:56,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:21:56,750 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:21:56,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a2ad8a-ca0a-462c-98b9-8cb6a048d07f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:21:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:56,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 02:21:56,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:22:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:22:01,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:22:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:22:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550048547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:22:08,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:22:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 24] total 70 [2023-11-29 02:22:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666982829] [2023-11-29 02:22:08,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:22:08,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-11-29 02:22:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:22:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-11-29 02:22:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=4436, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 02:22:08,900 INFO L87 Difference]: Start difference. First operand 80882 states and 99086 transitions. Second operand has 70 states, 70 states have (on average 4.742857142857143) internal successors, (332), 70 states have internal predecessors, (332), 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)