./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/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 935656e2fd7f83fa1197920e6391ee831ebff85c688a5254e91079e29a430b75 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:24:35,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:24:35,566 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:24:35,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:24:35,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:24:35,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:24:35,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:24:35,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:24:35,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:24:35,600 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:24:35,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:24:35,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:24:35,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:24:35,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:24:35,603 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:24:35,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:24:35,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:24:35,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:24:35,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:24:35,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:24:35,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:24:35,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:24:35,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:24:35,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:24:35,608 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:24:35,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:24:35,609 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:24:35,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:24:35,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:24:35,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:24:35,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:24:35,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:24:35,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:24:35,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:24:35,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:24:35,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:24:35,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:24:35,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:24:35,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:24:35,612 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:24:35,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:24:35,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:24:35,613 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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935656e2fd7f83fa1197920e6391ee831ebff85c688a5254e91079e29a430b75 [2023-11-29 06:24:35,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:24:35,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:24:35,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:24:35,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:24:35,852 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:24:35,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-11-29 06:24:38,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:24:39,010 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:24:39,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-11-29 06:24:39,041 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/data/d2e940f2d/94b22300a7d64c848ceca4af94991536/FLAGa0dfef917 [2023-11-29 06:24:39,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/data/d2e940f2d/94b22300a7d64c848ceca4af94991536 [2023-11-29 06:24:39,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:24:39,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:24:39,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:24:39,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:24:39,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:24:39,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:24:39" (1/1) ... [2023-11-29 06:24:39,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c296705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:39, skipping insertion in model container [2023-11-29 06:24:39,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:24:39" (1/1) ... [2023-11-29 06:24:39,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:24:39,554 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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[6524,6537] [2023-11-29 06:24:39,613 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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[13585,13598] [2023-11-29 06:24:40,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:24:40,359 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:24:40,387 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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[6524,6537] [2023-11-29 06:24:40,403 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_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[13585,13598] [2023-11-29 06:24:40,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:24:40,988 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:24:40,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40 WrapperNode [2023-11-29 06:24:40,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:24:40,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:24:40,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:24:40,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:24:40,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,351 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4977 [2023-11-29 06:24:41,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:24:41,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:24:41,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:24:41,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:24:41,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,568 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 06:24:41,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:24:41,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:24:41,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:24:41,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:24:41,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (1/1) ... [2023-11-29 06:24:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:24:41,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:41,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:24:41,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:24:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:24:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:24:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:24:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:24:42,073 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:24:42,076 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:24:46,550 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:24:46,620 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:24:46,620 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:24:46,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:24:46 BoogieIcfgContainer [2023-11-29 06:24:46,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:24:46,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:24:46,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:24:46,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:24:46,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:24:39" (1/3) ... [2023-11-29 06:24:46,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@826cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:24:46, skipping insertion in model container [2023-11-29 06:24:46,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:40" (2/3) ... [2023-11-29 06:24:46,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@826cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:24:46, skipping insertion in model container [2023-11-29 06:24:46,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:24:46" (3/3) ... [2023-11-29 06:24:46,629 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-11-29 06:24:46,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:24:46,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 06:24:46,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:24:46,712 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;@31cf3ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:24:46,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 06:24:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 06:24:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:24:46,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:46,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:46,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:46,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash -252464724, now seen corresponding path program 1 times [2023-11-29 06:24:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630395328] [2023-11-29 06:24:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:46,916 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 06:24:46,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:46,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630395328] [2023-11-29 06:24:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630395328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:46,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:46,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:24:46,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850620119] [2023-11-29 06:24:46,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:46,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:24:46,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:24:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:24:46,958 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 06:24:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:47,052 INFO L93 Difference]: Finished difference Result 1593 states and 3145 transitions. [2023-11-29 06:24:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:24:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-29 06:24:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:47,075 INFO L225 Difference]: With dead ends: 1593 [2023-11-29 06:24:47,075 INFO L226 Difference]: Without dead ends: 803 [2023-11-29 06:24:47,081 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 06:24:47,084 INFO L413 NwaCegarLoop]: 1520 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, 1520 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 06:24:47,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1520 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-11-29 06:24:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-11-29 06:24:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 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 06:24:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-11-29 06:24:47,168 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-11-29 06:24:47,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:47,168 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-11-29 06:24:47,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 06:24:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-11-29 06:24:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:24:47,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:47,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:47,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:24:47,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:47,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash -839270738, now seen corresponding path program 1 times [2023-11-29 06:24:47,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:47,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702262089] [2023-11-29 06:24:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:47,416 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 06:24:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702262089] [2023-11-29 06:24:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702262089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:47,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:47,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:24:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110901196] [2023-11-29 06:24:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:24:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:24:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:24:47,419 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 06:24:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:47,518 INFO L93 Difference]: Finished difference Result 835 states and 1570 transitions. [2023-11-29 06:24:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:24:47,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-29 06:24:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:47,525 INFO L225 Difference]: With dead ends: 835 [2023-11-29 06:24:47,525 INFO L226 Difference]: Without dead ends: 803 [2023-11-29 06:24:47,525 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 06:24:47,527 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 0 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:47,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4534 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-11-29 06:24:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-11-29 06:24:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 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 06:24:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-11-29 06:24:47,553 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-11-29 06:24:47,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:47,554 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-11-29 06:24:47,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 06:24:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-11-29 06:24:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 06:24:47,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:47,556 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] [2023-11-29 06:24:47,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:24:47,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:47,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1902539666, now seen corresponding path program 1 times [2023-11-29 06:24:47,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:47,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684811887] [2023-11-29 06:24:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:47,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:47,656 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 06:24:47,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:47,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684811887] [2023-11-29 06:24:47,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684811887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:47,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:47,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:24:47,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416769821] [2023-11-29 06:24:47,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:47,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:24:47,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:47,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:24:47,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:24:47,659 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 06:24:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:47,811 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-11-29 06:24:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:24:47,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-11-29 06:24:47,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:47,818 INFO L225 Difference]: With dead ends: 977 [2023-11-29 06:24:47,818 INFO L226 Difference]: Without dead ends: 948 [2023-11-29 06:24:47,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:24:47,820 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:47,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:24:47,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-11-29 06:24:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-11-29 06:24:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 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 06:24:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-11-29 06:24:47,850 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-11-29 06:24:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:47,850 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-11-29 06:24:47,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 06:24:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-11-29 06:24:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 06:24:47,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:47,852 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] [2023-11-29 06:24:47,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:24:47,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:47,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1190913598, now seen corresponding path program 1 times [2023-11-29 06:24:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:47,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066403522] [2023-11-29 06:24:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:47,922 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 06:24:47,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:47,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066403522] [2023-11-29 06:24:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066403522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326518720] [2023-11-29 06:24:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:24:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:24:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:24:47,925 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 06:24:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:47,969 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-11-29 06:24:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:24:47,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 06:24:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:47,975 INFO L225 Difference]: With dead ends: 931 [2023-11-29 06:24:47,975 INFO L226 Difference]: Without dead ends: 875 [2023-11-29 06:24:47,976 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 06:24:47,977 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:47,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-29 06:24:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-11-29 06:24:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 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 06:24:48,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-11-29 06:24:48,004 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-11-29 06:24:48,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:48,004 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-11-29 06:24:48,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 06:24:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-11-29 06:24:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 06:24:48,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:48,006 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] [2023-11-29 06:24:48,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:24:48,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:48,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:48,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1193058550, now seen corresponding path program 1 times [2023-11-29 06:24:48,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:48,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557404261] [2023-11-29 06:24:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:48,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:48,150 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 06:24:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:48,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557404261] [2023-11-29 06:24:48,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557404261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:48,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:48,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:24:48,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644321057] [2023-11-29 06:24:48,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:48,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:24:48,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:48,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:24:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:24:48,153 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 06:24:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:48,245 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-11-29 06:24:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:24:48,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 06:24:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:48,251 INFO L225 Difference]: With dead ends: 974 [2023-11-29 06:24:48,251 INFO L226 Difference]: Without dead ends: 875 [2023-11-29 06:24:48,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:24:48,253 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1473 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:48,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-29 06:24:48,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-11-29 06:24:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 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 06:24:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-11-29 06:24:48,280 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-11-29 06:24:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:48,280 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-11-29 06:24:48,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 06:24:48,281 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-11-29 06:24:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 06:24:48,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:48,282 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] [2023-11-29 06:24:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:24:48,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:48,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1798303105, now seen corresponding path program 1 times [2023-11-29 06:24:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266162295] [2023-11-29 06:24:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:48,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:48,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266162295] [2023-11-29 06:24:48,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266162295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:48,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:48,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:24:48,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929412324] [2023-11-29 06:24:48,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:48,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:24:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:48,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:24:48,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:24:48,442 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:24:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:48,490 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-11-29 06:24:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:24:48,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-29 06:24:48,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:48,497 INFO L225 Difference]: With dead ends: 881 [2023-11-29 06:24:48,497 INFO L226 Difference]: Without dead ends: 879 [2023-11-29 06:24:48,498 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 06:24:48,499 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 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 06:24:48,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-11-29 06:24:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-11-29 06:24:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 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 06:24:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-11-29 06:24:48,552 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-11-29 06:24:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:48,552 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-11-29 06:24:48,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:24:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-11-29 06:24:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 06:24:48,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:48,554 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] [2023-11-29 06:24:48,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:24:48,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:48,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1214279626, now seen corresponding path program 1 times [2023-11-29 06:24:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:48,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025035856] [2023-11-29 06:24:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:48,607 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 06:24:48,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025035856] [2023-11-29 06:24:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025035856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:48,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:48,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412399498] [2023-11-29 06:24:48,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:48,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:24:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:48,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:24:48,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:24:48,610 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:48,652 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-11-29 06:24:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:24:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-29 06:24:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:48,659 INFO L225 Difference]: With dead ends: 991 [2023-11-29 06:24:48,659 INFO L226 Difference]: Without dead ends: 931 [2023-11-29 06:24:48,660 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 06:24:48,661 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 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 06:24:48,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-11-29 06:24:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-11-29 06:24:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 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 06:24:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-11-29 06:24:48,694 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-11-29 06:24:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:48,695 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-11-29 06:24:48,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-11-29 06:24:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 06:24:48,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:48,696 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] [2023-11-29 06:24:48,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:24:48,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:48,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1839935690, now seen corresponding path program 1 times [2023-11-29 06:24:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456120016] [2023-11-29 06:24:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:48,744 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 06:24:48,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:48,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456120016] [2023-11-29 06:24:48,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456120016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:48,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:48,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:48,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843887333] [2023-11-29 06:24:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:48,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:24:48,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:48,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:24:48,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:24:48,747 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:48,793 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-11-29 06:24:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:24:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-29 06:24:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:48,800 INFO L225 Difference]: With dead ends: 1211 [2023-11-29 06:24:48,801 INFO L226 Difference]: Without dead ends: 1058 [2023-11-29 06:24:48,802 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 06:24:48,802 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 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 06:24:48,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-11-29 06:24:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-11-29 06:24:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 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 06:24:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-11-29 06:24:48,842 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-11-29 06:24:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:48,842 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-11-29 06:24:48,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-11-29 06:24:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 06:24:48,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:48,844 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] [2023-11-29 06:24:48,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:24:48,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:48,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -951202250, now seen corresponding path program 1 times [2023-11-29 06:24:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439370426] [2023-11-29 06:24:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:48,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:48,896 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 06:24:48,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:48,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439370426] [2023-11-29 06:24:48,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439370426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:48,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:48,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:48,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117337009] [2023-11-29 06:24:48,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:24:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:24:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:24:48,900 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:48,955 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-11-29 06:24:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:24:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-29 06:24:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:48,963 INFO L225 Difference]: With dead ends: 1568 [2023-11-29 06:24:48,964 INFO L226 Difference]: Without dead ends: 1288 [2023-11-29 06:24:48,965 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 06:24:48,966 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 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 06:24:48,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-11-29 06:24:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-11-29 06:24:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 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 06:24:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-11-29 06:24:49,017 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-11-29 06:24:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:49,018 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-11-29 06:24:49,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-11-29 06:24:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 06:24:49,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:49,020 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] [2023-11-29 06:24:49,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:24:49,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:49,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash -806196636, now seen corresponding path program 1 times [2023-11-29 06:24:49,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:49,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660895114] [2023-11-29 06:24:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:49,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:24:49,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:49,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660895114] [2023-11-29 06:24:49,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660895114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:49,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:49,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:24:49,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978941062] [2023-11-29 06:24:49,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:49,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:24:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:24:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:24:49,146 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 06:24:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:49,308 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2023-11-29 06:24:49,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:24:49,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 50 [2023-11-29 06:24:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:49,323 INFO L225 Difference]: With dead ends: 2794 [2023-11-29 06:24:49,324 INFO L226 Difference]: Without dead ends: 2424 [2023-11-29 06:24:49,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:24:49,326 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:49,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:24:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2023-11-29 06:24:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2023-11-29 06:24:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 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 06:24:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2023-11-29 06:24:49,419 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2023-11-29 06:24:49,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:49,419 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2023-11-29 06:24:49,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 06:24:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2023-11-29 06:24:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 06:24:49,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:49,421 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] [2023-11-29 06:24:49,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:24:49,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:49,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1431852700, now seen corresponding path program 1 times [2023-11-29 06:24:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:49,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267117359] [2023-11-29 06:24:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:24:49,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:49,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267117359] [2023-11-29 06:24:49,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267117359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:49,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:49,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:24:49,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789862459] [2023-11-29 06:24:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:49,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:24:49,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:49,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:24:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:24:49,542 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 06:24:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:49,701 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2023-11-29 06:24:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:24:49,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 50 [2023-11-29 06:24:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:49,717 INFO L225 Difference]: With dead ends: 3302 [2023-11-29 06:24:49,718 INFO L226 Difference]: Without dead ends: 2792 [2023-11-29 06:24:49,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:24:49,720 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:49,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:49,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-11-29 06:24:49,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2023-11-29 06:24:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 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 06:24:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-11-29 06:24:49,822 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2023-11-29 06:24:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:49,822 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-11-29 06:24:49,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 06:24:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-11-29 06:24:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 06:24:49,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:49,824 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] [2023-11-29 06:24:49,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:24:49,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:49,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -543119260, now seen corresponding path program 1 times [2023-11-29 06:24:49,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:49,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937304402] [2023-11-29 06:24:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:24:49,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:49,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937304402] [2023-11-29 06:24:49,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937304402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:49,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:49,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:24:49,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419334081] [2023-11-29 06:24:49,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:49,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:24:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:24:49,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:24:49,922 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 06:24:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:50,091 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2023-11-29 06:24:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:24:50,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 50 [2023-11-29 06:24:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:50,110 INFO L225 Difference]: With dead ends: 3810 [2023-11-29 06:24:50,110 INFO L226 Difference]: Without dead ends: 3300 [2023-11-29 06:24:50,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:24:50,112 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:50,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-11-29 06:24:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2023-11-29 06:24:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 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 06:24:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2023-11-29 06:24:50,228 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2023-11-29 06:24:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:50,228 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2023-11-29 06:24:50,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 06:24:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2023-11-29 06:24:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 06:24:50,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:50,229 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] [2023-11-29 06:24:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:24:50,230 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:50,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1216577728, now seen corresponding path program 1 times [2023-11-29 06:24:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:50,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087296857] [2023-11-29 06:24:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:50,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:50,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087296857] [2023-11-29 06:24:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087296857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:50,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276021849] [2023-11-29 06:24:50,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:50,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:24:50,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:50,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:24:50,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:24:50,317 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 06:24:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:50,409 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2023-11-29 06:24:50,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:24:50,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-11-29 06:24:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:50,426 INFO L225 Difference]: With dead ends: 5078 [2023-11-29 06:24:50,426 INFO L226 Difference]: Without dead ends: 2928 [2023-11-29 06:24:50,429 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 06:24:50,430 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 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 06:24:50,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-11-29 06:24:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-11-29 06:24:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 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 06:24:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2023-11-29 06:24:50,538 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2023-11-29 06:24:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:50,539 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2023-11-29 06:24:50,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 06:24:50,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2023-11-29 06:24:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 06:24:50,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:50,540 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] [2023-11-29 06:24:50,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:24:50,541 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:50,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1743300500, now seen corresponding path program 1 times [2023-11-29 06:24:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:50,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368837835] [2023-11-29 06:24:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:50,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:50,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:50,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368837835] [2023-11-29 06:24:50,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368837835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:50,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:50,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:50,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125880079] [2023-11-29 06:24:50,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:24:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:24:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:24:50,622 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:50,681 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2023-11-29 06:24:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:24:50,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-29 06:24:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:50,690 INFO L225 Difference]: With dead ends: 3772 [2023-11-29 06:24:50,690 INFO L226 Difference]: Without dead ends: 1622 [2023-11-29 06:24:50,693 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 06:24:50,694 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 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 06:24:50,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-11-29 06:24:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2023-11-29 06:24:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 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 06:24:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2023-11-29 06:24:50,750 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2023-11-29 06:24:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:50,750 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2023-11-29 06:24:50,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2023-11-29 06:24:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 06:24:50,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:50,751 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] [2023-11-29 06:24:50,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:24:50,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:50,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2144737778, now seen corresponding path program 1 times [2023-11-29 06:24:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545340199] [2023-11-29 06:24:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545340199] [2023-11-29 06:24:50,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545340199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:50,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:50,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70119677] [2023-11-29 06:24:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:50,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:24:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:24:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:24:50,838 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 06:24:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:50,882 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2023-11-29 06:24:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:24:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 06:24:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:50,889 INFO L225 Difference]: With dead ends: 2033 [2023-11-29 06:24:50,890 INFO L226 Difference]: Without dead ends: 1203 [2023-11-29 06:24:50,891 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 06:24:50,892 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 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 06:24:50,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:50,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-29 06:24:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2023-11-29 06:24:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 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 06:24:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2023-11-29 06:24:50,933 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2023-11-29 06:24:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:50,933 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2023-11-29 06:24:50,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 06:24:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2023-11-29 06:24:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 06:24:50,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:50,935 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] [2023-11-29 06:24:50,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:24:50,935 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:50,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash -537635620, now seen corresponding path program 1 times [2023-11-29 06:24:50,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:50,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751206837] [2023-11-29 06:24:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:50,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751206837] [2023-11-29 06:24:54,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751206837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122748672] [2023-11-29 06:24:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:54,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:54,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:54,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:54,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:24:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:54,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:24:54,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:24:54,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:24:54,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122748672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:54,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:54,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 06:24:54,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511210886] [2023-11-29 06:24:54,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:54,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:24:54,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:54,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:24:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:24:54,578 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 06:24:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:58,069 INFO L93 Difference]: Finished difference Result 3344 states and 4834 transitions. [2023-11-29 06:24:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 06:24:58,070 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 55 [2023-11-29 06:24:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:58,081 INFO L225 Difference]: With dead ends: 3344 [2023-11-29 06:24:58,081 INFO L226 Difference]: Without dead ends: 2928 [2023-11-29 06:24:58,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:24:58,085 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 14309 mSDsluCounter, 4745 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14309 SdHoareTripleChecker+Valid, 6236 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:58,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14309 Valid, 6236 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:24:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-11-29 06:24:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2672. [2023-11-29 06:24:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2670 states have (on average 1.4576779026217228) internal successors, (3892), 2671 states have internal predecessors, (3892), 0 states have call successors, (0), 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 06:24:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3892 transitions. [2023-11-29 06:24:58,171 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3892 transitions. Word has length 55 [2023-11-29 06:24:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:58,171 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 3892 transitions. [2023-11-29 06:24:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 06:24:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3892 transitions. [2023-11-29 06:24:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 06:24:58,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:58,173 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:24:58,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:24:58,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:24:58,373 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:58,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1291351326, now seen corresponding path program 1 times [2023-11-29 06:24:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229383719] [2023-11-29 06:24:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:58,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:58,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229383719] [2023-11-29 06:24:58,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229383719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899428722] [2023-11-29 06:24:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:58,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:58,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:58,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:58,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:24:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:58,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:24:58,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:59,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:00,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899428722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:00,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:00,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-11-29 06:25:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054274902] [2023-11-29 06:25:00,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:00,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:25:00,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:25:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:25:00,118 INFO L87 Difference]: Start difference. First operand 2672 states and 3892 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 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 06:25:00,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:25:00,890 INFO L93 Difference]: Finished difference Result 6001 states and 8124 transitions. [2023-11-29 06:25:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:25:00,890 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-29 06:25:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:25:00,900 INFO L225 Difference]: With dead ends: 6001 [2023-11-29 06:25:00,900 INFO L226 Difference]: Without dead ends: 4422 [2023-11-29 06:25:00,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 06:25:00,904 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 6153 mSDsluCounter, 10594 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6153 SdHoareTripleChecker+Valid, 12079 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:25:00,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6153 Valid, 12079 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:25:00,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-11-29 06:25:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4212. [2023-11-29 06:25:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4210 states have (on average 1.3888361045130642) internal successors, (5847), 4211 states have internal predecessors, (5847), 0 states have call successors, (0), 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 06:25:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5847 transitions. [2023-11-29 06:25:01,150 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5847 transitions. Word has length 56 [2023-11-29 06:25:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:25:01,150 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5847 transitions. [2023-11-29 06:25:01,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 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 06:25:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5847 transitions. [2023-11-29 06:25:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 06:25:01,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:25:01,152 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:25:01,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:25:01,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:25:01,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:25:01,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:25:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash -678057954, now seen corresponding path program 1 times [2023-11-29 06:25:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:25:01,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279702246] [2023-11-29 06:25:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:25:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:01,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:25:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279702246] [2023-11-29 06:25:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279702246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:25:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552072906] [2023-11-29 06:25:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:01,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:25:01,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:25:01,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:25:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:01,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:25:01,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:25:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:02,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:03,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552072906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:03,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:03,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 06:25:03,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921164607] [2023-11-29 06:25:03,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:03,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:25:03,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:03,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:25:03,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:25:03,220 INFO L87 Difference]: Start difference. First operand 4212 states and 5847 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 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 06:25:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:25:04,075 INFO L93 Difference]: Finished difference Result 7561 states and 10123 transitions. [2023-11-29 06:25:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:25:04,075 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-29 06:25:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:25:04,082 INFO L225 Difference]: With dead ends: 7561 [2023-11-29 06:25:04,082 INFO L226 Difference]: Without dead ends: 4560 [2023-11-29 06:25:04,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 06:25:04,087 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 13445 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13445 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:25:04,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13445 Valid, 6133 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:25:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2023-11-29 06:25:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4272. [2023-11-29 06:25:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 1.3740046838407494) internal successors, (5867), 4271 states have internal predecessors, (5867), 0 states have call successors, (0), 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 06:25:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5867 transitions. [2023-11-29 06:25:04,231 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5867 transitions. Word has length 56 [2023-11-29 06:25:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:25:04,231 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 5867 transitions. [2023-11-29 06:25:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 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 06:25:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5867 transitions. [2023-11-29 06:25:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 06:25:04,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:25:04,232 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:25:04,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:25:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:25:04,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:25:04,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:25:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 550837022, now seen corresponding path program 1 times [2023-11-29 06:25:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:25:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721567312] [2023-11-29 06:25:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:04,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:25:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:04,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:25:04,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721567312] [2023-11-29 06:25:04,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721567312] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:25:04,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411504900] [2023-11-29 06:25:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:04,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:04,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:25:04,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:25:04,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:25:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:04,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:25:04,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:25:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:05,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411504900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:06,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:06,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-29 06:25:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979796826] [2023-11-29 06:25:06,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:25:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:25:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-29 06:25:06,178 INFO L87 Difference]: Start difference. First operand 4272 states and 5867 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 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 06:25:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:25:07,094 INFO L93 Difference]: Finished difference Result 10853 states and 14150 transitions. [2023-11-29 06:25:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:25:07,095 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-29 06:25:07,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:25:07,103 INFO L225 Difference]: With dead ends: 10853 [2023-11-29 06:25:07,103 INFO L226 Difference]: Without dead ends: 8091 [2023-11-29 06:25:07,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 06:25:07,106 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 10515 mSDsluCounter, 9054 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10515 SdHoareTripleChecker+Valid, 10538 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:25:07,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10515 Valid, 10538 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:25:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2023-11-29 06:25:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 7571. [2023-11-29 06:25:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7569 states have (on average 1.3065134099616857) internal successors, (9889), 7570 states have internal predecessors, (9889), 0 states have call successors, (0), 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 06:25:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 9889 transitions. [2023-11-29 06:25:07,342 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 9889 transitions. Word has length 56 [2023-11-29 06:25:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:25:07,343 INFO L495 AbstractCegarLoop]: Abstraction has 7571 states and 9889 transitions. [2023-11-29 06:25:07,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 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 06:25:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 9889 transitions. [2023-11-29 06:25:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:25:07,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:25:07,344 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:25:07,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:25:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:07,547 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:25:07,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:25:07,547 INFO L85 PathProgramCache]: Analyzing trace with hash 782663002, now seen corresponding path program 1 times [2023-11-29 06:25:07,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:25:07,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629054522] [2023-11-29 06:25:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:07,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:25:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:25:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629054522] [2023-11-29 06:25:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629054522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:25:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824500042] [2023-11-29 06:25:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:08,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:25:08,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:25:08,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:25:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:08,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:25:08,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:25:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:09,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824500042] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:10,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:10,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 39 [2023-11-29 06:25:10,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484730692] [2023-11-29 06:25:10,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:10,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 06:25:10,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 06:25:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 06:25:10,802 INFO L87 Difference]: Start difference. First operand 7571 states and 9889 transitions. Second operand has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 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 06:25:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:25:36,504 INFO L93 Difference]: Finished difference Result 11787 states and 15049 transitions. [2023-11-29 06:25:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-11-29 06:25:36,505 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-29 06:25:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:25:36,521 INFO L225 Difference]: With dead ends: 11787 [2023-11-29 06:25:36,521 INFO L226 Difference]: Without dead ends: 8173 [2023-11-29 06:25:36,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13453 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=6891, Invalid=32115, Unknown=0, NotChecked=0, Total=39006 [2023-11-29 06:25:36,538 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 13974 mSDsluCounter, 26232 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13974 SdHoareTripleChecker+Valid, 27808 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:25:36,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13974 Valid, 27808 Invalid, 1940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 06:25:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8173 states. [2023-11-29 06:25:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8173 to 6461. [2023-11-29 06:25:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6461 states, 6459 states have (on average 1.3147546059761572) internal successors, (8492), 6460 states have internal predecessors, (8492), 0 states have call successors, (0), 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 06:25:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 8492 transitions. [2023-11-29 06:25:36,917 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 8492 transitions. Word has length 57 [2023-11-29 06:25:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:25:36,917 INFO L495 AbstractCegarLoop]: Abstraction has 6461 states and 8492 transitions. [2023-11-29 06:25:36,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 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 06:25:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 8492 transitions. [2023-11-29 06:25:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 06:25:36,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:25:36,918 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] [2023-11-29 06:25:36,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:25:37,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-29 06:25:37,119 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:25:37,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:25:37,119 INFO L85 PathProgramCache]: Analyzing trace with hash -237031840, now seen corresponding path program 1 times [2023-11-29 06:25:37,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:25:37,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563407238] [2023-11-29 06:25:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:37,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:25:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:25:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563407238] [2023-11-29 06:25:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563407238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:25:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866258757] [2023-11-29 06:25:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:25:37,882 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:25:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:25:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:38,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:25:38,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:25:38,870 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 06:25:38,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:40,322 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 06:25:40,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866258757] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:40,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:40,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 13] total 36 [2023-11-29 06:25:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658004409] [2023-11-29 06:25:40,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:40,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 06:25:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 06:25:40,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 06:25:40,325 INFO L87 Difference]: Start difference. First operand 6461 states and 8492 transitions. Second operand has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 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 06:25:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:25:43,510 INFO L93 Difference]: Finished difference Result 8057 states and 10458 transitions. [2023-11-29 06:25:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 06:25:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-11-29 06:25:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:25:43,517 INFO L225 Difference]: With dead ends: 8057 [2023-11-29 06:25:43,517 INFO L226 Difference]: Without dead ends: 5289 [2023-11-29 06:25:43,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 06:25:43,521 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 15581 mSDsluCounter, 19154 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15581 SdHoareTripleChecker+Valid, 20640 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:25:43,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15581 Valid, 20640 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:25:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2023-11-29 06:25:43,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5083. [2023-11-29 06:25:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5083 states, 5081 states have (on average 1.3332021255658335) internal successors, (6774), 5082 states have internal predecessors, (6774), 0 states have call successors, (0), 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 06:25:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 6774 transitions. [2023-11-29 06:25:43,882 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 6774 transitions. Word has length 58 [2023-11-29 06:25:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:25:43,882 INFO L495 AbstractCegarLoop]: Abstraction has 5083 states and 6774 transitions. [2023-11-29 06:25:43,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 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 06:25:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 6774 transitions. [2023-11-29 06:25:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:25:43,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:25:43,883 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] [2023-11-29 06:25:43,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 06:25:44,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 06:25:44,084 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:25:44,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:25:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1032859716, now seen corresponding path program 1 times [2023-11-29 06:25:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:25:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973418183] [2023-11-29 06:25:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:25:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:44,723 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 06:25:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:25:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973418183] [2023-11-29 06:25:44,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973418183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:25:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605423420] [2023-11-29 06:25:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:44,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:44,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:25:44,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:25:44,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:25:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:44,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:25:44,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:25:47,758 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 06:25:47,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:49,763 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 06:25:49,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605423420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:49,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:49,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 17] total 42 [2023-11-29 06:25:49,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540882642] [2023-11-29 06:25:49,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:49,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 06:25:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:49,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 06:25:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 06:25:49,766 INFO L87 Difference]: Start difference. First operand 5083 states and 6774 transitions. Second operand has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:26:01,135 INFO L93 Difference]: Finished difference Result 8994 states and 11617 transitions. [2023-11-29 06:26:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 06:26:01,136 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-29 06:26:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:26:01,143 INFO L225 Difference]: With dead ends: 8994 [2023-11-29 06:26:01,144 INFO L226 Difference]: Without dead ends: 6842 [2023-11-29 06:26:01,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2741, Invalid=9915, Unknown=0, NotChecked=0, Total=12656 [2023-11-29 06:26:01,149 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 20817 mSDsluCounter, 18244 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20817 SdHoareTripleChecker+Valid, 19756 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:26:01,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20817 Valid, 19756 Invalid, 1454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:26:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6842 states. [2023-11-29 06:26:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6842 to 3911. [2023-11-29 06:26:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3909 states have (on average 1.363008442056792) internal successors, (5328), 3910 states have internal predecessors, (5328), 0 states have call successors, (0), 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 06:26:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5328 transitions. [2023-11-29 06:26:01,412 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5328 transitions. Word has length 59 [2023-11-29 06:26:01,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:26:01,413 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 5328 transitions. [2023-11-29 06:26:01,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5328 transitions. [2023-11-29 06:26:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 06:26:01,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:26:01,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:26:01,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:26:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 06:26:01,614 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:26:01,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:26:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1450572312, now seen corresponding path program 1 times [2023-11-29 06:26:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:26:01,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175470384] [2023-11-29 06:26:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:26:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:01,704 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 06:26:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:26:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175470384] [2023-11-29 06:26:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175470384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:26:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:26:01,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:26:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047959051] [2023-11-29 06:26:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:26:01,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:26:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:26:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:26:01,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:26:01,707 INFO L87 Difference]: Start difference. First operand 3911 states and 5328 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:26:08,312 INFO L93 Difference]: Finished difference Result 6166 states and 9637 transitions. [2023-11-29 06:26:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:26:08,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-29 06:26:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:26:08,316 INFO L225 Difference]: With dead ends: 6166 [2023-11-29 06:26:08,316 INFO L226 Difference]: Without dead ends: 5413 [2023-11-29 06:26:08,317 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 06:26:08,318 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2324 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:26:08,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2324 Valid, 756 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-29 06:26:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2023-11-29 06:26:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 5413. [2023-11-29 06:26:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5411 states have (on average 1.375346516355572) internal successors, (7442), 5412 states have internal predecessors, (7442), 0 states have call successors, (0), 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 06:26:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 7442 transitions. [2023-11-29 06:26:08,553 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 7442 transitions. Word has length 60 [2023-11-29 06:26:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:26:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 5413 states and 7442 transitions. [2023-11-29 06:26:08,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 7442 transitions. [2023-11-29 06:26:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 06:26:08,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:26:08,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:26:08,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:26:08,556 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:26:08,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:26:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1050446386, now seen corresponding path program 1 times [2023-11-29 06:26:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:26:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719163098] [2023-11-29 06:26:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:26:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:26:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719163098] [2023-11-29 06:26:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719163098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:26:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961100475] [2023-11-29 06:26:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:26:09,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:26:09,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:26:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:26:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:09,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:26:09,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:26:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:10,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:26:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:11,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961100475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:26:11,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:26:11,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-11-29 06:26:11,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629320576] [2023-11-29 06:26:11,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:26:11,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 06:26:11,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:26:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 06:26:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 06:26:11,911 INFO L87 Difference]: Start difference. First operand 5413 states and 7442 transitions. Second operand has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 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 06:26:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:26:23,211 INFO L93 Difference]: Finished difference Result 9694 states and 12722 transitions. [2023-11-29 06:26:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-11-29 06:26:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 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 93 [2023-11-29 06:26:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:26:23,216 INFO L225 Difference]: With dead ends: 9694 [2023-11-29 06:26:23,217 INFO L226 Difference]: Without dead ends: 7284 [2023-11-29 06:26:23,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9657 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=4374, Invalid=25038, Unknown=0, NotChecked=0, Total=29412 [2023-11-29 06:26:23,221 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 25172 mSDsluCounter, 15972 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25172 SdHoareTripleChecker+Valid, 17512 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:26:23,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25172 Valid, 17512 Invalid, 1901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:26:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2023-11-29 06:26:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 6421. [2023-11-29 06:26:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6421 states, 6419 states have (on average 1.3481850755569402) internal successors, (8654), 6420 states have internal predecessors, (8654), 0 states have call successors, (0), 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 06:26:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6421 states to 6421 states and 8654 transitions. [2023-11-29 06:26:23,558 INFO L78 Accepts]: Start accepts. Automaton has 6421 states and 8654 transitions. Word has length 93 [2023-11-29 06:26:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:26:23,558 INFO L495 AbstractCegarLoop]: Abstraction has 6421 states and 8654 transitions. [2023-11-29 06:26:23,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 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 06:26:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6421 states and 8654 transitions. [2023-11-29 06:26:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 06:26:23,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:26:23,561 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:26:23,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 06:26:23,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 06:26:23,762 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:26:23,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:26:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1833467932, now seen corresponding path program 1 times [2023-11-29 06:26:23,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:26:23,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180959898] [2023-11-29 06:26:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:23,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:26:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 06:26:24,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:26:24,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180959898] [2023-11-29 06:26:24,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180959898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:26:24,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398737617] [2023-11-29 06:26:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:24,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:26:24,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:26:24,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:26:24,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:26:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:24,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:26:24,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:26:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:25,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:26:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:27,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398737617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:26:27,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:26:27,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 38 [2023-11-29 06:26:27,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790537009] [2023-11-29 06:26:27,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:26:27,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 06:26:27,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:26:27,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 06:26:27,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 06:26:27,179 INFO L87 Difference]: Start difference. First operand 6421 states and 8654 transitions. Second operand has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 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 06:26:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:26:36,338 INFO L93 Difference]: Finished difference Result 9229 states and 12120 transitions. [2023-11-29 06:26:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-29 06:26:36,338 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 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 93 [2023-11-29 06:26:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:26:36,342 INFO L225 Difference]: With dead ends: 9229 [2023-11-29 06:26:36,342 INFO L226 Difference]: Without dead ends: 6533 [2023-11-29 06:26:36,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5217 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2715, Invalid=15645, Unknown=0, NotChecked=0, Total=18360 [2023-11-29 06:26:36,345 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 21877 mSDsluCounter, 20805 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21877 SdHoareTripleChecker+Valid, 22372 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:26:36,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21877 Valid, 22372 Invalid, 2413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:26:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2023-11-29 06:26:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 6357. [2023-11-29 06:26:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6357 states, 6355 states have (on average 1.3413060582218725) internal successors, (8524), 6356 states have internal predecessors, (8524), 0 states have call successors, (0), 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 06:26:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 8524 transitions. [2023-11-29 06:26:36,814 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 8524 transitions. Word has length 93 [2023-11-29 06:26:36,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:26:36,814 INFO L495 AbstractCegarLoop]: Abstraction has 6357 states and 8524 transitions. [2023-11-29 06:26:36,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 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 06:26:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 8524 transitions. [2023-11-29 06:26:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 06:26:36,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:26:36,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:26:36,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:26:37,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 06:26:37,018 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:26:37,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:26:37,018 INFO L85 PathProgramCache]: Analyzing trace with hash -176289152, now seen corresponding path program 1 times [2023-11-29 06:26:37,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:26:37,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933693709] [2023-11-29 06:26:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:26:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:26:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933693709] [2023-11-29 06:26:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933693709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:26:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567586118] [2023-11-29 06:26:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:38,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:26:38,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:26:38,118 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:26:38,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:26:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:38,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:26:38,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:26:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:39,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:26:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:26:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567586118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:26:43,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:26:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 54 [2023-11-29 06:26:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90504254] [2023-11-29 06:26:43,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:26:43,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-29 06:26:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:26:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-29 06:26:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 06:26:43,439 INFO L87 Difference]: Start difference. First operand 6357 states and 8524 transitions. Second operand has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 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 06:27:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:27:01,701 INFO L93 Difference]: Finished difference Result 16069 states and 20337 transitions. [2023-11-29 06:27:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-29 06:27:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 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 95 [2023-11-29 06:27:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:27:01,712 INFO L225 Difference]: With dead ends: 16069 [2023-11-29 06:27:01,712 INFO L226 Difference]: Without dead ends: 14558 [2023-11-29 06:27:01,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9546 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=5460, Invalid=23270, Unknown=0, NotChecked=0, Total=28730 [2023-11-29 06:27:01,716 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 18452 mSDsluCounter, 24292 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18452 SdHoareTripleChecker+Valid, 25867 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:27:01,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18452 Valid, 25867 Invalid, 2781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 06:27:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14558 states. [2023-11-29 06:27:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14558 to 7469. [2023-11-29 06:27:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7469 states, 7467 states have (on average 1.319673228873711) internal successors, (9854), 7468 states have internal predecessors, (9854), 0 states have call successors, (0), 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 06:27:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 9854 transitions. [2023-11-29 06:27:02,315 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 9854 transitions. Word has length 95 [2023-11-29 06:27:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:27:02,316 INFO L495 AbstractCegarLoop]: Abstraction has 7469 states and 9854 transitions. [2023-11-29 06:27:02,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 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 06:27:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 9854 transitions. [2023-11-29 06:27:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 06:27:02,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:27:02,318 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:27:02,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:27:02,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 06:27:02,518 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:27:02,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:27:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 914477032, now seen corresponding path program 1 times [2023-11-29 06:27:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:27:02,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857446083] [2023-11-29 06:27:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:27:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:27:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:27:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:27:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:27:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857446083] [2023-11-29 06:27:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857446083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:27:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146407230] [2023-11-29 06:27:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:27:03,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:27:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:27:03,594 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:27:03,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:27:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:27:03,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 06:27:03,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:27:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:27:05,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:27:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:27:14,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146407230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:27:14,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:27:14,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 61 [2023-11-29 06:27:14,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341529996] [2023-11-29 06:27:14,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:27:14,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 06:27:14,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:27:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 06:27:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=3326, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:27:14,252 INFO L87 Difference]: Start difference. First operand 7469 states and 9854 transitions. Second operand has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 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 06:31:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:06,613 INFO L93 Difference]: Finished difference Result 20569 states and 25700 transitions. [2023-11-29 06:31:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 477 states. [2023-11-29 06:31:06,614 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 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 95 [2023-11-29 06:31:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:06,627 INFO L225 Difference]: With dead ends: 20569 [2023-11-29 06:31:06,627 INFO L226 Difference]: Without dead ends: 18803 [2023-11-29 06:31:06,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118355 ImplicationChecksByTransitivity, 224.3s TimeCoverageRelationStatistics Valid=26514, Invalid=253856, Unknown=0, NotChecked=0, Total=280370 [2023-11-29 06:31:06,645 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 24843 mSDsluCounter, 42987 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24843 SdHoareTripleChecker+Valid, 44564 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:06,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24843 Valid, 44564 Invalid, 4722 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [290 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-11-29 06:31:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18803 states. [2023-11-29 06:31:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18803 to 10442. [2023-11-29 06:31:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10440 states have (on average 1.286015325670498) internal successors, (13426), 10441 states have internal predecessors, (13426), 0 states have call successors, (0), 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 06:31:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 13426 transitions. [2023-11-29 06:31:07,836 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 13426 transitions. Word has length 95 [2023-11-29 06:31:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:07,836 INFO L495 AbstractCegarLoop]: Abstraction has 10442 states and 13426 transitions. [2023-11-29 06:31:07,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 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 06:31:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 13426 transitions. [2023-11-29 06:31:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 06:31:07,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:07,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:07,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:31:08,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:31:08,039 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:08,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash -473639900, now seen corresponding path program 1 times [2023-11-29 06:31:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:08,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155948500] [2023-11-29 06:31:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:09,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:09,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155948500] [2023-11-29 06:31:09,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155948500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:09,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791190531] [2023-11-29 06:31:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:09,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:09,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:09,573 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:09,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:31:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:09,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:31:09,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:11,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:14,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791190531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:14,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 58 [2023-11-29 06:31:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872957040] [2023-11-29 06:31:14,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 06:31:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 06:31:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3073, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 06:31:14,417 INFO L87 Difference]: Start difference. First operand 10442 states and 13426 transitions. Second operand has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 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 06:33:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:33:04,692 INFO L93 Difference]: Finished difference Result 29688 states and 36439 transitions. [2023-11-29 06:33:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-11-29 06:33:04,693 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 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 95 [2023-11-29 06:33:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:33:04,711 INFO L225 Difference]: With dead ends: 29688 [2023-11-29 06:33:04,712 INFO L226 Difference]: Without dead ends: 25320 [2023-11-29 06:33:04,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98087 ImplicationChecksByTransitivity, 99.7s TimeCoverageRelationStatistics Valid=26855, Invalid=205951, Unknown=0, NotChecked=0, Total=232806 [2023-11-29 06:33:04,726 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 24082 mSDsluCounter, 39338 mSDsCounter, 0 mSdLazyCounter, 7832 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24082 SdHoareTripleChecker+Valid, 41054 SdHoareTripleChecker+Invalid, 8289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 7832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:33:04,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24082 Valid, 41054 Invalid, 8289 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [457 Valid, 7832 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-11-29 06:33:04,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25320 states. [2023-11-29 06:33:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25320 to 11286. [2023-11-29 06:33:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11286 states, 11284 states have (on average 1.2772066643034385) internal successors, (14412), 11285 states have internal predecessors, (14412), 0 states have call successors, (0), 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 06:33:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11286 states to 11286 states and 14412 transitions. [2023-11-29 06:33:06,283 INFO L78 Accepts]: Start accepts. Automaton has 11286 states and 14412 transitions. Word has length 95 [2023-11-29 06:33:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:33:06,284 INFO L495 AbstractCegarLoop]: Abstraction has 11286 states and 14412 transitions. [2023-11-29 06:33:06,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 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 06:33:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11286 states and 14412 transitions. [2023-11-29 06:33:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 06:33:06,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:33:06,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 06:33:06,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:33:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:06,487 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:33:06,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash 284827514, now seen corresponding path program 1 times [2023-11-29 06:33:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:06,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743166597] [2023-11-29 06:33:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:07,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743166597] [2023-11-29 06:33:07,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743166597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:33:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560955856] [2023-11-29 06:33:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:07,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:07,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:07,727 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:07,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:33:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:07,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 06:33:07,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:10,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560955856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:14,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:33:14,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 64 [2023-11-29 06:33:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019631368] [2023-11-29 06:33:14,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-29 06:33:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-29 06:33:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 06:33:14,876 INFO L87 Difference]: Start difference. First operand 11286 states and 14412 transitions. Second operand has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 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 06:34:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:34:21,880 INFO L93 Difference]: Finished difference Result 20897 states and 25912 transitions. [2023-11-29 06:34:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-11-29 06:34:21,881 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 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 96 [2023-11-29 06:34:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:34:21,894 INFO L225 Difference]: With dead ends: 20897 [2023-11-29 06:34:21,894 INFO L226 Difference]: Without dead ends: 18073 [2023-11-29 06:34:21,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29564 ImplicationChecksByTransitivity, 61.8s TimeCoverageRelationStatistics Valid=11663, Invalid=70419, Unknown=0, NotChecked=0, Total=82082 [2023-11-29 06:34:21,900 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 17877 mSDsluCounter, 32854 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17877 SdHoareTripleChecker+Valid, 34424 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:34:21,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17877 Valid, 34424 Invalid, 3679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [229 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 06:34:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18073 states. [2023-11-29 06:34:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18073 to 14744. [2023-11-29 06:34:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14744 states, 14742 states have (on average 1.2619047619047619) internal successors, (18603), 14743 states have internal predecessors, (18603), 0 states have call successors, (0), 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 06:34:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14744 states to 14744 states and 18603 transitions. [2023-11-29 06:34:24,103 INFO L78 Accepts]: Start accepts. Automaton has 14744 states and 18603 transitions. Word has length 96 [2023-11-29 06:34:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:34:24,103 INFO L495 AbstractCegarLoop]: Abstraction has 14744 states and 18603 transitions. [2023-11-29 06:34:24,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 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 06:34:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 14744 states and 18603 transitions. [2023-11-29 06:34:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 06:34:24,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:34:24,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:24,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:34:24,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:34:24,305 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:34:24,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1877346398, now seen corresponding path program 1 times [2023-11-29 06:34:24,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:24,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697490369] [2023-11-29 06:34:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:24,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:25,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697490369] [2023-11-29 06:34:25,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697490369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:25,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289397678] [2023-11-29 06:34:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:25,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:25,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:25,323 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:25,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:34:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:25,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:34:25,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:26,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:28,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289397678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:28,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:34:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 45 [2023-11-29 06:34:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946865039] [2023-11-29 06:34:28,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 06:34:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 06:34:28,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 06:34:28,323 INFO L87 Difference]: Start difference. First operand 14744 states and 18603 transitions. Second operand has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 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 06:34:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:34:53,667 INFO L93 Difference]: Finished difference Result 33616 states and 41441 transitions. [2023-11-29 06:34:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-11-29 06:34:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 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 97 [2023-11-29 06:34:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:34:53,684 INFO L225 Difference]: With dead ends: 33616 [2023-11-29 06:34:53,684 INFO L226 Difference]: Without dead ends: 23017 [2023-11-29 06:34:53,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15308 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=7178, Invalid=37132, Unknown=0, NotChecked=0, Total=44310 [2023-11-29 06:34:53,695 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 24411 mSDsluCounter, 23813 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24411 SdHoareTripleChecker+Valid, 25362 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:34:53,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24411 Valid, 25362 Invalid, 2218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [212 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 06:34:53,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23017 states. [2023-11-29 06:34:56,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23017 to 20147. [2023-11-29 06:34:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20147 states, 20145 states have (on average 1.2462645817820799) internal successors, (25106), 20146 states have internal predecessors, (25106), 0 states have call successors, (0), 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 06:34:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20147 states to 20147 states and 25106 transitions. [2023-11-29 06:34:57,016 INFO L78 Accepts]: Start accepts. Automaton has 20147 states and 25106 transitions. Word has length 97 [2023-11-29 06:34:57,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:34:57,016 INFO L495 AbstractCegarLoop]: Abstraction has 20147 states and 25106 transitions. [2023-11-29 06:34:57,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 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 06:34:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand 20147 states and 25106 transitions. [2023-11-29 06:34:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 06:34:57,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:34:57,018 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:57,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:34:57,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:57,219 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:34:57,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1505175490, now seen corresponding path program 1 times [2023-11-29 06:34:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:57,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290775852] [2023-11-29 06:34:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:57,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290775852] [2023-11-29 06:34:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290775852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326096944] [2023-11-29 06:34:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:57,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:57,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:57,633 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:57,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:34:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:57,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:34:57,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:58,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:35:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:00,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326096944] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:35:00,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:35:00,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-11-29 06:35:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470213590] [2023-11-29 06:35:00,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:35:00,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 06:35:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 06:35:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 06:35:00,817 INFO L87 Difference]: Start difference. First operand 20147 states and 25106 transitions. Second operand has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 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 06:35:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:14,682 INFO L93 Difference]: Finished difference Result 58135 states and 71262 transitions. [2023-11-29 06:35:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-29 06:35:14,683 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 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 97 [2023-11-29 06:35:14,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:14,714 INFO L225 Difference]: With dead ends: 58135 [2023-11-29 06:35:14,715 INFO L226 Difference]: Without dead ends: 42769 [2023-11-29 06:35:14,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4367 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2845, Invalid=11917, Unknown=0, NotChecked=0, Total=14762 [2023-11-29 06:35:14,726 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 28795 mSDsluCounter, 21104 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28795 SdHoareTripleChecker+Valid, 22647 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:14,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28795 Valid, 22647 Invalid, 2295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:35:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42769 states. [2023-11-29 06:35:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42769 to 23039. [2023-11-29 06:35:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23039 states, 23037 states have (on average 1.2445630941528845) internal successors, (28671), 23038 states have internal predecessors, (28671), 0 states have call successors, (0), 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 06:35:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23039 states to 23039 states and 28671 transitions. [2023-11-29 06:35:19,064 INFO L78 Accepts]: Start accepts. Automaton has 23039 states and 28671 transitions. Word has length 97 [2023-11-29 06:35:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:19,064 INFO L495 AbstractCegarLoop]: Abstraction has 23039 states and 28671 transitions. [2023-11-29 06:35:19,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 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 06:35:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 23039 states and 28671 transitions. [2023-11-29 06:35:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 06:35:19,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:19,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2023-11-29 06:35:19,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:35:19,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:19,267 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:19,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1074544506, now seen corresponding path program 1 times [2023-11-29 06:35:19,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:19,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062849889] [2023-11-29 06:35:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:19,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:20,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062849889] [2023-11-29 06:35:20,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062849889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:35:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631927501] [2023-11-29 06:35:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:20,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:20,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:20,611 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:20,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d028d8-9bb1-45e5-83b5-c7df21d8d074/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:35:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:20,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 06:35:20,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:24,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:35:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:32,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631927501] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:35:32,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:35:32,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 27] total 74 [2023-11-29 06:35:32,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912380757] [2023-11-29 06:35:32,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:35:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-11-29 06:35:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-11-29 06:35:32,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=4832, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 06:35:32,212 INFO L87 Difference]: Start difference. First operand 23039 states and 28671 transitions. Second operand has 74 states, 74 states have (on average 3.675675675675676) internal successors, (272), 74 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)