./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/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_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/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_08878dae-6f09-4ad0-90fd-34e6295a60f6/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 685efd9995e3559fa33c98b3c3a918c092f08496a4c3c16e54af7b7a4363265b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:30:02,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:30:02,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:30:02,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:30:02,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:30:02,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:30:02,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:30:02,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:30:02,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:30:02,210 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:30:02,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:30:02,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:30:02,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:30:02,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:30:02,213 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:30:02,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:30:02,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:30:02,214 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:30:02,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:30:02,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:30:02,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:30:02,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:30:02,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:30:02,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:30:02,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:30:02,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:30:02,218 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:30:02,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:30:02,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:30:02,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:30:02,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:30:02,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:30:02,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:30:02,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:30:02,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:30:02,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:30:02,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:30:02,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:30:02,223 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:30:02,223 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:30:02,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:30:02,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:30:02,224 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_08878dae-6f09-4ad0-90fd-34e6295a60f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 685efd9995e3559fa33c98b3c3a918c092f08496a4c3c16e54af7b7a4363265b [2023-11-29 01:30:02,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:30:02,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:30:02,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:30:02,473 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:30:02,474 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:30:02,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem15_label59.c [2023-11-29 01:30:05,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:30:05,577 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:30:05,578 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/sv-benchmarks/c/eca-rers2012/Problem15_label59.c [2023-11-29 01:30:05,594 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/data/8d413604a/6780f66acbce473b8c405d162d434649/FLAG6ae1dcf18 [2023-11-29 01:30:05,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/data/8d413604a/6780f66acbce473b8c405d162d434649 [2023-11-29 01:30:05,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:30:05,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:30:05,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:30:05,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:30:05,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:30:05,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:30:05" (1/1) ... [2023-11-29 01:30:05,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ecd210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:05, skipping insertion in model container [2023-11-29 01:30:05,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:30:05" (1/1) ... [2023-11-29 01:30:05,683 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:30:05,861 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_08878dae-6f09-4ad0-90fd-34e6295a60f6/sv-benchmarks/c/eca-rers2012/Problem15_label59.c[6635,6648] [2023-11-29 01:30:06,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:30:06,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:30:06,248 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_08878dae-6f09-4ad0-90fd-34e6295a60f6/sv-benchmarks/c/eca-rers2012/Problem15_label59.c[6635,6648] [2023-11-29 01:30:06,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:30:06,503 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:30:06,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06 WrapperNode [2023-11-29 01:30:06,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:30:06,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:30:06,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:30:06,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:30:06,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,670 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1759 [2023-11-29 01:30:06,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:30:06,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:30:06,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:30:06,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:30:06,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,809 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 01:30:06,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:06,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:30:06,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:30:06,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:30:06,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:30:06,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (1/1) ... [2023-11-29 01:30:07,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:30:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:07,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:30:07,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:30:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:30:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:30:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:30:07,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:30:07,136 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:30:07,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:30:09,717 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:30:09,780 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:30:09,780 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:30:09,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:30:09 BoogieIcfgContainer [2023-11-29 01:30:09,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:30:09,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:30:09,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:30:09,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:30:09,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:30:05" (1/3) ... [2023-11-29 01:30:09,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e90989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:30:09, skipping insertion in model container [2023-11-29 01:30:09,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:06" (2/3) ... [2023-11-29 01:30:09,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e90989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:30:09, skipping insertion in model container [2023-11-29 01:30:09,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:30:09" (3/3) ... [2023-11-29 01:30:09,790 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label59.c [2023-11-29 01:30:09,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:30:09,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:30:09,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:30:09,875 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;@33a82a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:30:09,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:30:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:30:09,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:09,890 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] [2023-11-29 01:30:09,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:09,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash -776852995, now seen corresponding path program 1 times [2023-11-29 01:30:09,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:09,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440524324] [2023-11-29 01:30:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:09,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:10,072 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 01:30:10,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:10,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440524324] [2023-11-29 01:30:10,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440524324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:10,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:10,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:30:10,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555578547] [2023-11-29 01:30:10,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:10,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:30:10,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:30:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:30:10,111 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 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 01:30:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:10,169 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-11-29 01:30:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:30:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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 01:30:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:10,184 INFO L225 Difference]: With dead ends: 723 [2023-11-29 01:30:10,185 INFO L226 Difference]: Without dead ends: 360 [2023-11-29 01:30:10,189 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 01:30:10,193 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:10,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:30:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-29 01:30:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-11-29 01:30:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-11-29 01:30:10,248 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 53 [2023-11-29 01:30:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:10,248 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-11-29 01:30:10,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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 01:30:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-11-29 01:30:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:30:10,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:10,250 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] [2023-11-29 01:30:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:30:10,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:10,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1081355088, now seen corresponding path program 1 times [2023-11-29 01:30:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:10,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773393294] [2023-11-29 01:30:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:10,404 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 01:30:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773393294] [2023-11-29 01:30:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773393294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:10,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:10,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:30:10,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281546013] [2023-11-29 01:30:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:10,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:10,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:10,409 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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 01:30:12,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:12,613 INFO L93 Difference]: Finished difference Result 1052 states and 1830 transitions. [2023-11-29 01:30:12,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:12,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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 01:30:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:12,619 INFO L225 Difference]: With dead ends: 1052 [2023-11-29 01:30:12,620 INFO L226 Difference]: Without dead ends: 693 [2023-11-29 01:30:12,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:12,623 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 316 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:12,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 91 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 01:30:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-29 01:30:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 683. [2023-11-29 01:30:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.719941348973607) internal successors, (1173), 682 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1173 transitions. [2023-11-29 01:30:12,660 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1173 transitions. Word has length 53 [2023-11-29 01:30:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:12,661 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1173 transitions. [2023-11-29 01:30:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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 01:30:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1173 transitions. [2023-11-29 01:30:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:30:12,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:12,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:30:12,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:30:12,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:12,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash 389266623, now seen corresponding path program 1 times [2023-11-29 01:30:12,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:12,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837891019] [2023-11-29 01:30:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:12,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:13,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:13,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837891019] [2023-11-29 01:30:13,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837891019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:13,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:13,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:30:13,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468999725] [2023-11-29 01:30:13,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:13,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:13,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:13,062 INFO L87 Difference]: Start difference. First operand 683 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:14,983 INFO L93 Difference]: Finished difference Result 1680 states and 2895 transitions. [2023-11-29 01:30:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:14,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-11-29 01:30:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:14,990 INFO L225 Difference]: With dead ends: 1680 [2023-11-29 01:30:14,990 INFO L226 Difference]: Without dead ends: 998 [2023-11-29 01:30:14,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:14,992 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 254 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:14,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 224 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:30:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-11-29 01:30:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 988. [2023-11-29 01:30:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 987 states have (on average 1.6200607902735562) internal successors, (1599), 987 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1599 transitions. [2023-11-29 01:30:15,020 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1599 transitions. Word has length 118 [2023-11-29 01:30:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:15,020 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1599 transitions. [2023-11-29 01:30:15,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1599 transitions. [2023-11-29 01:30:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:30:15,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:15,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:30:15,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:30:15,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1028794524, now seen corresponding path program 1 times [2023-11-29 01:30:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:15,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691185730] [2023-11-29 01:30:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:15,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:15,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691185730] [2023-11-29 01:30:15,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691185730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:15,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:15,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:30:15,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860031447] [2023-11-29 01:30:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:15,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:15,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:15,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:15,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:15,193 INFO L87 Difference]: Start difference. First operand 988 states and 1599 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:16,788 INFO L93 Difference]: Finished difference Result 2574 states and 4254 transitions. [2023-11-29 01:30:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:16,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-11-29 01:30:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:16,798 INFO L225 Difference]: With dead ends: 2574 [2023-11-29 01:30:16,799 INFO L226 Difference]: Without dead ends: 1587 [2023-11-29 01:30:16,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:16,802 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 284 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:16,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 335 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:30:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2023-11-29 01:30:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1583. [2023-11-29 01:30:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 1.3988621997471555) internal successors, (2213), 1582 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2213 transitions. [2023-11-29 01:30:16,844 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2213 transitions. Word has length 119 [2023-11-29 01:30:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:16,844 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2213 transitions. [2023-11-29 01:30:16,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2213 transitions. [2023-11-29 01:30:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 01:30:16,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:16,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:30:16,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:30:16,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:16,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash 769366362, now seen corresponding path program 1 times [2023-11-29 01:30:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:16,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427654978] [2023-11-29 01:30:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427654978] [2023-11-29 01:30:17,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427654978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:17,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:17,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:30:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078634049] [2023-11-29 01:30:17,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:17,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:30:17,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:30:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:30:17,165 INFO L87 Difference]: Start difference. First operand 1583 states and 2213 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:19,665 INFO L93 Difference]: Finished difference Result 4081 states and 5879 transitions. [2023-11-29 01:30:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:30:19,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-11-29 01:30:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:19,681 INFO L225 Difference]: With dead ends: 4081 [2023-11-29 01:30:19,681 INFO L226 Difference]: Without dead ends: 2798 [2023-11-29 01:30:19,683 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 01:30:19,684 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 346 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:19,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 409 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 01:30:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2023-11-29 01:30:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2482. [2023-11-29 01:30:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2481 states have (on average 1.2962515114873034) internal successors, (3216), 2481 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3216 transitions. [2023-11-29 01:30:19,748 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3216 transitions. Word has length 123 [2023-11-29 01:30:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:19,748 INFO L495 AbstractCegarLoop]: Abstraction has 2482 states and 3216 transitions. [2023-11-29 01:30:19,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3216 transitions. [2023-11-29 01:30:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 01:30:19,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:19,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:30:19,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:30:19,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:19,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1868741584, now seen corresponding path program 1 times [2023-11-29 01:30:19,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:19,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520563546] [2023-11-29 01:30:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:19,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520563546] [2023-11-29 01:30:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520563546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:30:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417646905] [2023-11-29 01:30:19,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:19,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:19,944 INFO L87 Difference]: Start difference. First operand 2482 states and 3216 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 01:30:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:21,776 INFO L93 Difference]: Finished difference Result 7357 states and 9525 transitions. [2023-11-29 01:30:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 144 [2023-11-29 01:30:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:21,790 INFO L225 Difference]: With dead ends: 7357 [2023-11-29 01:30:21,790 INFO L226 Difference]: Without dead ends: 3680 [2023-11-29 01:30:21,795 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 01:30:21,796 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 290 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:21,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 609 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:30:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2023-11-29 01:30:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3680. [2023-11-29 01:30:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 1.1696113074204948) internal successors, (4303), 3679 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 4303 transitions. [2023-11-29 01:30:21,860 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 4303 transitions. Word has length 144 [2023-11-29 01:30:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:21,860 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 4303 transitions. [2023-11-29 01:30:21,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 01:30:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 4303 transitions. [2023-11-29 01:30:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-11-29 01:30:21,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:21,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:21,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:30:21,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:21,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1456022276, now seen corresponding path program 1 times [2023-11-29 01:30:21,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673916295] [2023-11-29 01:30:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:22,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:22,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673916295] [2023-11-29 01:30:22,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673916295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:22,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:22,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:30:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066658028] [2023-11-29 01:30:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:22,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:30:22,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:22,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:30:22,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:30:22,264 INFO L87 Difference]: Start difference. First operand 3680 states and 4303 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:24,860 INFO L93 Difference]: Finished difference Result 11272 states and 13176 transitions. [2023-11-29 01:30:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:30:24,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2023-11-29 01:30:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:24,884 INFO L225 Difference]: With dead ends: 11272 [2023-11-29 01:30:24,884 INFO L226 Difference]: Without dead ends: 7294 [2023-11-29 01:30:24,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:30:24,889 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 455 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:24,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 121 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:30:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2023-11-29 01:30:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 6080. [2023-11-29 01:30:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6079 states have (on average 1.1837473268629708) internal successors, (7196), 6079 states have internal predecessors, (7196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 7196 transitions. [2023-11-29 01:30:25,053 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 7196 transitions. Word has length 286 [2023-11-29 01:30:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:25,053 INFO L495 AbstractCegarLoop]: Abstraction has 6080 states and 7196 transitions. [2023-11-29 01:30:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 7196 transitions. [2023-11-29 01:30:25,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-11-29 01:30:25,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:25,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:30:25,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:25,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash -76759790, now seen corresponding path program 1 times [2023-11-29 01:30:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088310351] [2023-11-29 01:30:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088310351] [2023-11-29 01:30:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088310351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:30:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617140666] [2023-11-29 01:30:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:25,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:25,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:25,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:30:25,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:30:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:26,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:30:26,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:30:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:26,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:30:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617140666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:26,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:30:26,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 01:30:26,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077582425] [2023-11-29 01:30:26,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:26,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:26,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:30:26,282 INFO L87 Difference]: Start difference. First operand 6080 states and 7196 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:27,667 INFO L93 Difference]: Finished difference Result 12160 states and 14394 transitions. [2023-11-29 01:30:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:27,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 323 [2023-11-29 01:30:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:27,689 INFO L225 Difference]: With dead ends: 12160 [2023-11-29 01:30:27,689 INFO L226 Difference]: Without dead ends: 6081 [2023-11-29 01:30:27,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:30:27,694 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 331 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:27,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 415 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:30:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2023-11-29 01:30:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6078. [2023-11-29 01:30:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6078 states, 6077 states have (on average 1.161592891229225) internal successors, (7059), 6077 states have internal predecessors, (7059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 7059 transitions. [2023-11-29 01:30:27,783 INFO L78 Accepts]: Start accepts. Automaton has 6078 states and 7059 transitions. Word has length 323 [2023-11-29 01:30:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:27,784 INFO L495 AbstractCegarLoop]: Abstraction has 6078 states and 7059 transitions. [2023-11-29 01:30:27,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6078 states and 7059 transitions. [2023-11-29 01:30:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-29 01:30:27,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:27,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:27,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:30:27,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:27,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:27,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1843338794, now seen corresponding path program 1 times [2023-11-29 01:30:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:27,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410986895] [2023-11-29 01:30:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:27,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:30:28,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:28,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410986895] [2023-11-29 01:30:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410986895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:28,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:28,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:30:28,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221407134] [2023-11-29 01:30:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:28,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:28,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:28,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:28,654 INFO L87 Difference]: Start difference. First operand 6078 states and 7059 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:29,912 INFO L93 Difference]: Finished difference Result 12454 states and 14420 transitions. [2023-11-29 01:30:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:29,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 336 [2023-11-29 01:30:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:29,939 INFO L225 Difference]: With dead ends: 12454 [2023-11-29 01:30:29,939 INFO L226 Difference]: Without dead ends: 6377 [2023-11-29 01:30:29,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:29,944 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:29,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 301 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:30:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2023-11-29 01:30:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 6377. [2023-11-29 01:30:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6377 states, 6376 states have (on average 1.1543287327478042) internal successors, (7360), 6376 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6377 states to 6377 states and 7360 transitions. [2023-11-29 01:30:30,025 INFO L78 Accepts]: Start accepts. Automaton has 6377 states and 7360 transitions. Word has length 336 [2023-11-29 01:30:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:30,026 INFO L495 AbstractCegarLoop]: Abstraction has 6377 states and 7360 transitions. [2023-11-29 01:30:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6377 states and 7360 transitions. [2023-11-29 01:30:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-29 01:30:30,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:30,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:30:30,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:30,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash -580323688, now seen corresponding path program 1 times [2023-11-29 01:30:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:30,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694620340] [2023-11-29 01:30:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 103 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:30,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694620340] [2023-11-29 01:30:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694620340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:30:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090082478] [2023-11-29 01:30:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:30,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:30,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:30,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:30:30,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:30:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:31,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:30:31,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:30:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:31,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:30:31,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090082478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:31,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:30:31,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 01:30:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370161382] [2023-11-29 01:30:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:30:31,163 INFO L87 Difference]: Start difference. First operand 6377 states and 7360 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:32,481 INFO L93 Difference]: Finished difference Result 15449 states and 18174 transitions. [2023-11-29 01:30:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2023-11-29 01:30:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:32,496 INFO L225 Difference]: With dead ends: 15449 [2023-11-29 01:30:32,496 INFO L226 Difference]: Without dead ends: 9372 [2023-11-29 01:30:32,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:30:32,503 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 244 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:32,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 267 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:30:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2023-11-29 01:30:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 9366. [2023-11-29 01:30:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 9365 states have (on average 1.1273892151628404) internal successors, (10558), 9365 states have internal predecessors, (10558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 10558 transitions. [2023-11-29 01:30:32,664 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 10558 transitions. Word has length 410 [2023-11-29 01:30:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 9366 states and 10558 transitions. [2023-11-29 01:30:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 10558 transitions. [2023-11-29 01:30:32,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2023-11-29 01:30:32,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:32,669 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:32,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:30:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:32,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:32,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1091042039, now seen corresponding path program 1 times [2023-11-29 01:30:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774914868] [2023-11-29 01:30:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-29 01:30:33,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:33,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774914868] [2023-11-29 01:30:33,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774914868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:33,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:33,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:30:33,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567255944] [2023-11-29 01:30:33,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:33,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:30:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:30:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:30:33,492 INFO L87 Difference]: Start difference. First operand 9366 states and 10558 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:35,901 INFO L93 Difference]: Finished difference Result 22042 states and 24949 transitions. [2023-11-29 01:30:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:30:35,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 466 [2023-11-29 01:30:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:35,916 INFO L225 Difference]: With dead ends: 22042 [2023-11-29 01:30:35,916 INFO L226 Difference]: Without dead ends: 12677 [2023-11-29 01:30:35,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:30:35,924 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 423 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:35,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 124 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:30:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12677 states. [2023-11-29 01:30:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12677 to 9368. [2023-11-29 01:30:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9368 states, 9367 states have (on average 1.1258674068538486) internal successors, (10546), 9367 states have internal predecessors, (10546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9368 states to 9368 states and 10546 transitions. [2023-11-29 01:30:36,052 INFO L78 Accepts]: Start accepts. Automaton has 9368 states and 10546 transitions. Word has length 466 [2023-11-29 01:30:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:36,052 INFO L495 AbstractCegarLoop]: Abstraction has 9368 states and 10546 transitions. [2023-11-29 01:30:36,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9368 states and 10546 transitions. [2023-11-29 01:30:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-11-29 01:30:36,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:36,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:36,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:30:36,058 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:36,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:36,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1011153474, now seen corresponding path program 1 times [2023-11-29 01:30:36,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:36,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206904670] [2023-11-29 01:30:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:36,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 262 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:37,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:37,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206904670] [2023-11-29 01:30:37,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206904670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:30:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233261380] [2023-11-29 01:30:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:37,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:37,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:37,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:30:37,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:30:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:37,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:30:37,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:30:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-11-29 01:30:37,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:30:37,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233261380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:37,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:30:37,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 01:30:37,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229646615] [2023-11-29 01:30:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:37,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:30:37,611 INFO L87 Difference]: Start difference. First operand 9368 states and 10546 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:39,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:39,161 INFO L93 Difference]: Finished difference Result 22023 states and 24969 transitions. [2023-11-29 01:30:39,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:39,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 540 [2023-11-29 01:30:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:39,187 INFO L225 Difference]: With dead ends: 22023 [2023-11-29 01:30:39,187 INFO L226 Difference]: Without dead ends: 12955 [2023-11-29 01:30:39,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:30:39,197 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 362 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:39,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 442 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:30:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12955 states. [2023-11-29 01:30:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12955 to 10862. [2023-11-29 01:30:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10862 states, 10861 states have (on average 1.1340576374182856) internal successors, (12317), 10861 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 12317 transitions. [2023-11-29 01:30:39,349 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 12317 transitions. Word has length 540 [2023-11-29 01:30:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:39,350 INFO L495 AbstractCegarLoop]: Abstraction has 10862 states and 12317 transitions. [2023-11-29 01:30:39,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 12317 transitions. [2023-11-29 01:30:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-11-29 01:30:39,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:39,357 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:39,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:30:39,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:30:39,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:39,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1604450333, now seen corresponding path program 1 times [2023-11-29 01:30:39,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:39,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24101568] [2023-11-29 01:30:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:39,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 462 proven. 172 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:30:40,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:40,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24101568] [2023-11-29 01:30:40,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24101568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:30:40,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535670373] [2023-11-29 01:30:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:40,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:40,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:30:40,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:30:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:40,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:30:40,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:30:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 01:30:40,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:30:40,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535670373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:40,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:30:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 01:30:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618173526] [2023-11-29 01:30:40,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:40,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:30:41,000 INFO L87 Difference]: Start difference. First operand 10862 states and 12317 transitions. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:42,248 INFO L93 Difference]: Finished difference Result 21429 states and 24338 transitions. [2023-11-29 01:30:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 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 586 [2023-11-29 01:30:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:42,264 INFO L225 Difference]: With dead ends: 21429 [2023-11-29 01:30:42,264 INFO L226 Difference]: Without dead ends: 10867 [2023-11-29 01:30:42,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:30:42,274 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 301 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:42,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 474 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:30:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10867 states. [2023-11-29 01:30:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10867 to 10561. [2023-11-29 01:30:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10561 states, 10560 states have (on average 1.116098484848485) internal successors, (11786), 10560 states have internal predecessors, (11786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10561 states to 10561 states and 11786 transitions. [2023-11-29 01:30:42,416 INFO L78 Accepts]: Start accepts. Automaton has 10561 states and 11786 transitions. Word has length 586 [2023-11-29 01:30:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:42,416 INFO L495 AbstractCegarLoop]: Abstraction has 10561 states and 11786 transitions. [2023-11-29 01:30:42,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10561 states and 11786 transitions. [2023-11-29 01:30:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-11-29 01:30:42,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:42,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:42,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:30:42,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:30:42,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:42,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash -606083024, now seen corresponding path program 1 times [2023-11-29 01:30:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:42,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998178710] [2023-11-29 01:30:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 01:30:43,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:43,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998178710] [2023-11-29 01:30:43,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998178710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:43,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:43,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:30:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344694991] [2023-11-29 01:30:43,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:43,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:30:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:30:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:30:43,845 INFO L87 Difference]: Start difference. First operand 10561 states and 11786 transitions. Second operand has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:45,612 INFO L93 Difference]: Finished difference Result 23846 states and 26897 transitions. [2023-11-29 01:30:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:30:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 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 590 [2023-11-29 01:30:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:45,624 INFO L225 Difference]: With dead ends: 23846 [2023-11-29 01:30:45,624 INFO L226 Difference]: Without dead ends: 13585 [2023-11-29 01:30:45,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 01:30:45,632 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 807 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:45,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 596 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:30:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13585 states. [2023-11-29 01:30:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13585 to 11756. [2023-11-29 01:30:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11756 states, 11755 states have (on average 1.114844746916206) internal successors, (13105), 11755 states have internal predecessors, (13105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11756 states to 11756 states and 13105 transitions. [2023-11-29 01:30:45,744 INFO L78 Accepts]: Start accepts. Automaton has 11756 states and 13105 transitions. Word has length 590 [2023-11-29 01:30:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:45,745 INFO L495 AbstractCegarLoop]: Abstraction has 11756 states and 13105 transitions. [2023-11-29 01:30:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 11756 states and 13105 transitions. [2023-11-29 01:30:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-29 01:30:45,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:45,752 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:30:45,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:45,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1064121670, now seen corresponding path program 1 times [2023-11-29 01:30:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:45,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807217913] [2023-11-29 01:30:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-11-29 01:30:46,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:46,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807217913] [2023-11-29 01:30:46,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807217913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:46,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:46,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:30:46,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280732370] [2023-11-29 01:30:46,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:46,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:46,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:46,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:46,460 INFO L87 Difference]: Start difference. First operand 11756 states and 13105 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:47,724 INFO L93 Difference]: Finished difference Result 23217 states and 25914 transitions. [2023-11-29 01:30:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 667 [2023-11-29 01:30:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:47,733 INFO L225 Difference]: With dead ends: 23217 [2023-11-29 01:30:47,733 INFO L226 Difference]: Without dead ends: 11761 [2023-11-29 01:30:47,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:30:47,737 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 297 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:47,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 136 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:30:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11761 states. [2023-11-29 01:30:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11761 to 11756. [2023-11-29 01:30:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11756 states, 11755 states have (on average 1.101148447469162) internal successors, (12944), 11755 states have internal predecessors, (12944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11756 states to 11756 states and 12944 transitions. [2023-11-29 01:30:47,837 INFO L78 Accepts]: Start accepts. Automaton has 11756 states and 12944 transitions. Word has length 667 [2023-11-29 01:30:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:47,837 INFO L495 AbstractCegarLoop]: Abstraction has 11756 states and 12944 transitions. [2023-11-29 01:30:47,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 11756 states and 12944 transitions. [2023-11-29 01:30:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 01:30:47,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:47,844 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:47,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:30:47,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:47,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1402555553, now seen corresponding path program 1 times [2023-11-29 01:30:47,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:47,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651520152] [2023-11-29 01:30:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:47,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-29 01:30:48,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:48,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651520152] [2023-11-29 01:30:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651520152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:48,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:48,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:30:48,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12298365] [2023-11-29 01:30:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:48,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:48,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:48,327 INFO L87 Difference]: Start difference. First operand 11756 states and 12944 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:50,067 INFO L93 Difference]: Finished difference Result 28918 states and 31734 transitions. [2023-11-29 01:30:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 669 [2023-11-29 01:30:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:50,079 INFO L225 Difference]: With dead ends: 28918 [2023-11-29 01:30:50,080 INFO L226 Difference]: Without dead ends: 17462 [2023-11-29 01:30:50,084 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 01:30:50,085 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 238 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:50,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 597 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:30:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17462 states. [2023-11-29 01:30:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17462 to 17151. [2023-11-29 01:30:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17151 states, 17150 states have (on average 1.083673469387755) internal successors, (18585), 17150 states have internal predecessors, (18585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 18585 transitions. [2023-11-29 01:30:50,274 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 18585 transitions. Word has length 669 [2023-11-29 01:30:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:50,274 INFO L495 AbstractCegarLoop]: Abstraction has 17151 states and 18585 transitions. [2023-11-29 01:30:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 18585 transitions. [2023-11-29 01:30:50,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-11-29 01:30:50,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:50,282 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:50,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:30:50,282 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:50,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1017724808, now seen corresponding path program 1 times [2023-11-29 01:30:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:50,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477240473] [2023-11-29 01:30:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:50,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-11-29 01:30:50,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:50,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477240473] [2023-11-29 01:30:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477240473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:50,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:30:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146578623] [2023-11-29 01:30:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:50,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:50,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:50,846 INFO L87 Difference]: Start difference. First operand 17151 states and 18585 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:52,223 INFO L93 Difference]: Finished difference Result 36096 states and 39305 transitions. [2023-11-29 01:30:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:52,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 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 678 [2023-11-29 01:30:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:52,240 INFO L225 Difference]: With dead ends: 36096 [2023-11-29 01:30:52,241 INFO L226 Difference]: Without dead ends: 19245 [2023-11-29 01:30:52,248 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 01:30:52,249 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 145 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:52,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 589 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:30:52,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19245 states. [2023-11-29 01:30:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19245 to 18946. [2023-11-29 01:30:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18946 states, 18945 states have (on average 1.0746371074162049) internal successors, (20359), 18945 states have internal predecessors, (20359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18946 states to 18946 states and 20359 transitions. [2023-11-29 01:30:52,443 INFO L78 Accepts]: Start accepts. Automaton has 18946 states and 20359 transitions. Word has length 678 [2023-11-29 01:30:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:52,443 INFO L495 AbstractCegarLoop]: Abstraction has 18946 states and 20359 transitions. [2023-11-29 01:30:52,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 18946 states and 20359 transitions. [2023-11-29 01:30:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-29 01:30:52,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:52,452 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:52,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:30:52,452 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:52,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1061308252, now seen corresponding path program 1 times [2023-11-29 01:30:52,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:52,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557663261] [2023-11-29 01:30:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:52,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 262 proven. 372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557663261] [2023-11-29 01:30:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557663261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:30:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772087051] [2023-11-29 01:30:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:53,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:53,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:30:53,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:30:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:53,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:30:53,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:30:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2023-11-29 01:30:54,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:30:54,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772087051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:54,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:30:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:30:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927937374] [2023-11-29 01:30:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:54,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:30:54,045 INFO L87 Difference]: Start difference. First operand 18946 states and 20359 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:55,724 INFO L93 Difference]: Finished difference Result 45402 states and 48792 transitions. [2023-11-29 01:30:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:55,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 697 [2023-11-29 01:30:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:55,742 INFO L225 Difference]: With dead ends: 45402 [2023-11-29 01:30:55,742 INFO L226 Difference]: Without dead ends: 24065 [2023-11-29 01:30:55,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:30:55,752 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 346 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:55,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 436 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:30:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24065 states. [2023-11-29 01:30:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24065 to 20467. [2023-11-29 01:30:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20467 states, 20466 states have (on average 1.0633245382585752) internal successors, (21762), 20466 states have internal predecessors, (21762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 21762 transitions. [2023-11-29 01:30:55,964 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 21762 transitions. Word has length 697 [2023-11-29 01:30:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:55,964 INFO L495 AbstractCegarLoop]: Abstraction has 20467 states and 21762 transitions. [2023-11-29 01:30:55,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 21762 transitions. [2023-11-29 01:30:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-29 01:30:55,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:55,972 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:55,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:30:56,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:30:56,173 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:56,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1653742565, now seen corresponding path program 1 times [2023-11-29 01:30:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692495632] [2023-11-29 01:30:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-11-29 01:30:57,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692495632] [2023-11-29 01:30:57,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692495632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:57,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:57,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:30:57,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82720129] [2023-11-29 01:30:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:57,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:30:57,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:30:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:30:57,454 INFO L87 Difference]: Start difference. First operand 20467 states and 21762 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:59,446 INFO L93 Difference]: Finished difference Result 48434 states and 51386 transitions. [2023-11-29 01:30:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:30:59,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 705 [2023-11-29 01:30:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:59,469 INFO L225 Difference]: With dead ends: 48434 [2023-11-29 01:30:59,469 INFO L226 Difference]: Without dead ends: 27669 [2023-11-29 01:30:59,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:30:59,479 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 535 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:59,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 154 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:30:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27669 states. [2023-11-29 01:30:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27669 to 20467. [2023-11-29 01:30:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20467 states, 20466 states have (on average 1.0633245382585752) internal successors, (21762), 20466 states have internal predecessors, (21762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 21762 transitions. [2023-11-29 01:30:59,696 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 21762 transitions. Word has length 705 [2023-11-29 01:30:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:59,696 INFO L495 AbstractCegarLoop]: Abstraction has 20467 states and 21762 transitions. [2023-11-29 01:30:59,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:30:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 21762 transitions. [2023-11-29 01:30:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2023-11-29 01:30:59,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:59,705 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:59,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:30:59,706 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:59,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1066963352, now seen corresponding path program 1 times [2023-11-29 01:30:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:59,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126606560] [2023-11-29 01:30:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-11-29 01:31:00,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126606560] [2023-11-29 01:31:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126606560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:00,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:00,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:00,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317150442] [2023-11-29 01:31:00,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:00,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:00,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:00,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:00,055 INFO L87 Difference]: Start difference. First operand 20467 states and 21762 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:01,112 INFO L93 Difference]: Finished difference Result 40930 states and 43524 transitions. [2023-11-29 01:31:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:01,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 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 714 [2023-11-29 01:31:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:01,126 INFO L225 Difference]: With dead ends: 40930 [2023-11-29 01:31:01,126 INFO L226 Difference]: Without dead ends: 20763 [2023-11-29 01:31:01,133 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 01:31:01,134 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 463 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:01,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 68 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:31:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20763 states. [2023-11-29 01:31:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20763 to 20464. [2023-11-29 01:31:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20464 states, 20463 states have (on average 1.0631872159507403) internal successors, (21756), 20463 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20464 states to 20464 states and 21756 transitions. [2023-11-29 01:31:01,313 INFO L78 Accepts]: Start accepts. Automaton has 20464 states and 21756 transitions. Word has length 714 [2023-11-29 01:31:01,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:01,313 INFO L495 AbstractCegarLoop]: Abstraction has 20464 states and 21756 transitions. [2023-11-29 01:31:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 20464 states and 21756 transitions. [2023-11-29 01:31:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2023-11-29 01:31:01,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:01,322 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:31:01,322 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:01,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash -508250434, now seen corresponding path program 1 times [2023-11-29 01:31:01,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:01,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479059420] [2023-11-29 01:31:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:01,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 01:31:01,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:01,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479059420] [2023-11-29 01:31:01,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479059420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330502424] [2023-11-29 01:31:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:01,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:01,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:01,802 INFO L87 Difference]: Start difference. First operand 20464 states and 21756 transitions. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:03,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:03,123 INFO L93 Difference]: Finished difference Result 45410 states and 48389 transitions. [2023-11-29 01:31:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:03,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 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 725 [2023-11-29 01:31:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:03,144 INFO L225 Difference]: With dead ends: 45410 [2023-11-29 01:31:03,144 INFO L226 Difference]: Without dead ends: 25246 [2023-11-29 01:31:03,153 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 01:31:03,154 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 213 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:03,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 150 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:31:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25246 states. [2023-11-29 01:31:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25246 to 24349. [2023-11-29 01:31:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24349 states, 24348 states have (on average 1.059594217184163) internal successors, (25799), 24348 states have internal predecessors, (25799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24349 states to 24349 states and 25799 transitions. [2023-11-29 01:31:03,397 INFO L78 Accepts]: Start accepts. Automaton has 24349 states and 25799 transitions. Word has length 725 [2023-11-29 01:31:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:03,397 INFO L495 AbstractCegarLoop]: Abstraction has 24349 states and 25799 transitions. [2023-11-29 01:31:03,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 24349 states and 25799 transitions. [2023-11-29 01:31:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-11-29 01:31:03,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:03,406 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:03,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:31:03,407 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:03,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2097396006, now seen corresponding path program 1 times [2023-11-29 01:31:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:03,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574630855] [2023-11-29 01:31:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:03,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-11-29 01:31:03,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:03,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574630855] [2023-11-29 01:31:03,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574630855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:03,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:03,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:03,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534110590] [2023-11-29 01:31:03,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:03,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:03,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:03,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:03,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:03,954 INFO L87 Difference]: Start difference. First operand 24349 states and 25799 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:05,474 INFO L93 Difference]: Finished difference Result 55009 states and 58247 transitions. [2023-11-29 01:31:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:05,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 764 [2023-11-29 01:31:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:05,499 INFO L225 Difference]: With dead ends: 55009 [2023-11-29 01:31:05,499 INFO L226 Difference]: Without dead ends: 28867 [2023-11-29 01:31:05,510 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 01:31:05,511 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 341 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:05,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 445 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:31:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28867 states. [2023-11-29 01:31:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28867 to 23153. [2023-11-29 01:31:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23153 states, 23152 states have (on average 1.058742225293711) internal successors, (24512), 23152 states have internal predecessors, (24512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23153 states to 23153 states and 24512 transitions. [2023-11-29 01:31:05,744 INFO L78 Accepts]: Start accepts. Automaton has 23153 states and 24512 transitions. Word has length 764 [2023-11-29 01:31:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:05,744 INFO L495 AbstractCegarLoop]: Abstraction has 23153 states and 24512 transitions. [2023-11-29 01:31:05,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 23153 states and 24512 transitions. [2023-11-29 01:31:05,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2023-11-29 01:31:05,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:05,757 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:05,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:31:05,757 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:05,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash -862324749, now seen corresponding path program 1 times [2023-11-29 01:31:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:05,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173737112] [2023-11-29 01:31:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-11-29 01:31:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:06,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173737112] [2023-11-29 01:31:06,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173737112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:06,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:06,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045204682] [2023-11-29 01:31:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:06,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:06,501 INFO L87 Difference]: Start difference. First operand 23153 states and 24512 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:08,435 INFO L93 Difference]: Finished difference Result 54690 states and 57938 transitions. [2023-11-29 01:31:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:08,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 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 838 [2023-11-29 01:31:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:08,459 INFO L225 Difference]: With dead ends: 54690 [2023-11-29 01:31:08,459 INFO L226 Difference]: Without dead ends: 30041 [2023-11-29 01:31:08,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:08,470 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 651 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:08,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 137 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:31:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30041 states. [2023-11-29 01:31:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30041 to 22254. [2023-11-29 01:31:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22254 states, 22253 states have (on average 1.0552285085157058) internal successors, (23482), 22253 states have internal predecessors, (23482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22254 states to 22254 states and 23482 transitions. [2023-11-29 01:31:08,703 INFO L78 Accepts]: Start accepts. Automaton has 22254 states and 23482 transitions. Word has length 838 [2023-11-29 01:31:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:08,703 INFO L495 AbstractCegarLoop]: Abstraction has 22254 states and 23482 transitions. [2023-11-29 01:31:08,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 22254 states and 23482 transitions. [2023-11-29 01:31:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2023-11-29 01:31:08,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:08,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:31:08,716 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:08,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:08,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1252105626, now seen corresponding path program 1 times [2023-11-29 01:31:08,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:08,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719371131] [2023-11-29 01:31:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:08,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-11-29 01:31:09,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:09,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719371131] [2023-11-29 01:31:09,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719371131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:09,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:09,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458661214] [2023-11-29 01:31:09,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:09,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:09,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:09,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:09,151 INFO L87 Difference]: Start difference. First operand 22254 states and 23482 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:10,395 INFO L93 Difference]: Finished difference Result 45697 states and 48233 transitions. [2023-11-29 01:31:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:10,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 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 843 [2023-11-29 01:31:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:10,412 INFO L225 Difference]: With dead ends: 45697 [2023-11-29 01:31:10,412 INFO L226 Difference]: Without dead ends: 23743 [2023-11-29 01:31:10,421 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 01:31:10,421 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 312 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:10,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 540 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:31:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23743 states. [2023-11-29 01:31:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23743 to 23443. [2023-11-29 01:31:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23443 states, 23442 states have (on average 1.052811193584165) internal successors, (24680), 23442 states have internal predecessors, (24680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23443 states to 23443 states and 24680 transitions. [2023-11-29 01:31:10,637 INFO L78 Accepts]: Start accepts. Automaton has 23443 states and 24680 transitions. Word has length 843 [2023-11-29 01:31:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:10,638 INFO L495 AbstractCegarLoop]: Abstraction has 23443 states and 24680 transitions. [2023-11-29 01:31:10,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 23443 states and 24680 transitions. [2023-11-29 01:31:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2023-11-29 01:31:10,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:10,646 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:10,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 01:31:10,646 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:10,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1967154322, now seen corresponding path program 1 times [2023-11-29 01:31:10,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:10,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252382029] [2023-11-29 01:31:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:10,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2023-11-29 01:31:11,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252382029] [2023-11-29 01:31:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252382029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:11,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:11,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:11,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432957164] [2023-11-29 01:31:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:11,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:11,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:11,288 INFO L87 Difference]: Start difference. First operand 23443 states and 24680 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:12,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:12,602 INFO L93 Difference]: Finished difference Result 48687 states and 51201 transitions. [2023-11-29 01:31:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:12,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 864 [2023-11-29 01:31:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:12,622 INFO L225 Difference]: With dead ends: 48687 [2023-11-29 01:31:12,622 INFO L226 Difference]: Without dead ends: 25245 [2023-11-29 01:31:12,632 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 01:31:12,632 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 323 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:12,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 444 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:31:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25245 states. [2023-11-29 01:31:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25245 to 23144. [2023-11-29 01:31:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23144 states, 23143 states have (on average 1.0532774489046364) internal successors, (24376), 23143 states have internal predecessors, (24376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23144 states to 23144 states and 24376 transitions. [2023-11-29 01:31:12,870 INFO L78 Accepts]: Start accepts. Automaton has 23144 states and 24376 transitions. Word has length 864 [2023-11-29 01:31:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:12,870 INFO L495 AbstractCegarLoop]: Abstraction has 23144 states and 24376 transitions. [2023-11-29 01:31:12,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 23144 states and 24376 transitions. [2023-11-29 01:31:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2023-11-29 01:31:12,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:12,878 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:12,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 01:31:12,879 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:12,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1783888980, now seen corresponding path program 1 times [2023-11-29 01:31:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:12,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599711237] [2023-11-29 01:31:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 842 proven. 188 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-11-29 01:31:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599711237] [2023-11-29 01:31:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599711237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782263456] [2023-11-29 01:31:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:14,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:14,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:14,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:14,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:31:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:31:14,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 1239 proven. 2 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-29 01:31:15,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 1090 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-11-29 01:31:16,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782263456] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:16,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:31:16,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 9 [2023-11-29 01:31:16,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243196343] [2023-11-29 01:31:16,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:16,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:16,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:16,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:16,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:31:16,525 INFO L87 Difference]: Start difference. First operand 23144 states and 24376 transitions. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:17,964 INFO L93 Difference]: Finished difference Result 47847 states and 50395 transitions. [2023-11-29 01:31:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 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 883 [2023-11-29 01:31:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:17,983 INFO L225 Difference]: With dead ends: 47847 [2023-11-29 01:31:17,984 INFO L226 Difference]: Without dead ends: 25003 [2023-11-29 01:31:17,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1770 GetRequests, 1762 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:31:17,993 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 413 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:17,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 539 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:31:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25003 states. [2023-11-29 01:31:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25003 to 24639. [2023-11-29 01:31:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24639 states, 24638 states have (on average 1.0518305057228672) internal successors, (25915), 24638 states have internal predecessors, (25915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24639 states to 24639 states and 25915 transitions. [2023-11-29 01:31:18,225 INFO L78 Accepts]: Start accepts. Automaton has 24639 states and 25915 transitions. Word has length 883 [2023-11-29 01:31:18,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:18,225 INFO L495 AbstractCegarLoop]: Abstraction has 24639 states and 25915 transitions. [2023-11-29 01:31:18,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 24639 states and 25915 transitions. [2023-11-29 01:31:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2023-11-29 01:31:18,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:18,235 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:18,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:18,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:18,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:18,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash -787492648, now seen corresponding path program 1 times [2023-11-29 01:31:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252170941] [2023-11-29 01:31:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 850 proven. 188 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-11-29 01:31:19,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252170941] [2023-11-29 01:31:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252170941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882523112] [2023-11-29 01:31:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:19,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:19,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:19,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:31:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:19,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:20,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 767 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-11-29 01:31:20,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:20,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882523112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:20,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:20,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-29 01:31:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883790715] [2023-11-29 01:31:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:20,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:20,710 INFO L87 Difference]: Start difference. First operand 24639 states and 25915 transitions. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:22,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:22,774 INFO L93 Difference]: Finished difference Result 58569 states and 61507 transitions. [2023-11-29 01:31:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:22,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 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 889 [2023-11-29 01:31:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:22,800 INFO L225 Difference]: With dead ends: 58569 [2023-11-29 01:31:22,800 INFO L226 Difference]: Without dead ends: 33632 [2023-11-29 01:31:22,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:22,811 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 526 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:22,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 138 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:31:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33632 states. [2023-11-29 01:31:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33632 to 28535. [2023-11-29 01:31:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28535 states, 28534 states have (on average 1.0517277633700146) internal successors, (30010), 28534 states have internal predecessors, (30010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28535 states to 28535 states and 30010 transitions. [2023-11-29 01:31:23,127 INFO L78 Accepts]: Start accepts. Automaton has 28535 states and 30010 transitions. Word has length 889 [2023-11-29 01:31:23,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:23,128 INFO L495 AbstractCegarLoop]: Abstraction has 28535 states and 30010 transitions. [2023-11-29 01:31:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:23,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28535 states and 30010 transitions. [2023-11-29 01:31:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2023-11-29 01:31:23,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:23,142 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:23,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:31:23,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:31:23,343 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:23,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash 934570483, now seen corresponding path program 1 times [2023-11-29 01:31:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:23,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421042734] [2023-11-29 01:31:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 912 proven. 188 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2023-11-29 01:31:24,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:24,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421042734] [2023-11-29 01:31:24,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421042734] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:24,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975982949] [2023-11-29 01:31:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:24,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:24,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:24,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:24,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:31:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:24,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:24,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2023-11-29 01:31:25,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:25,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975982949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:25,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:25,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-29 01:31:25,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118785272] [2023-11-29 01:31:25,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:25,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:25,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:25,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:25,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:25,484 INFO L87 Difference]: Start difference. First operand 28535 states and 30010 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:27,642 INFO L93 Difference]: Finished difference Result 62770 states and 65867 transitions. [2023-11-29 01:31:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:27,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 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 918 [2023-11-29 01:31:27,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:27,672 INFO L225 Difference]: With dead ends: 62770 [2023-11-29 01:31:27,672 INFO L226 Difference]: Without dead ends: 33937 [2023-11-29 01:31:27,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:27,743 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 526 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:27,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 138 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:31:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33937 states. [2023-11-29 01:31:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33937 to 27937. [2023-11-29 01:31:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27937 states, 27936 states have (on average 1.052405498281787) internal successors, (29400), 27936 states have internal predecessors, (29400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27937 states to 27937 states and 29400 transitions. [2023-11-29 01:31:28,017 INFO L78 Accepts]: Start accepts. Automaton has 27937 states and 29400 transitions. Word has length 918 [2023-11-29 01:31:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:28,018 INFO L495 AbstractCegarLoop]: Abstraction has 27937 states and 29400 transitions. [2023-11-29 01:31:28,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 27937 states and 29400 transitions. [2023-11-29 01:31:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2023-11-29 01:31:28,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:28,030 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:31:28,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:31:28,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:31:28,230 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:28,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash -732252364, now seen corresponding path program 1 times [2023-11-29 01:31:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:28,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124629756] [2023-11-29 01:31:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 1062 proven. 105 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 01:31:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124629756] [2023-11-29 01:31:29,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124629756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899853353] [2023-11-29 01:31:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:29,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:29,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:29,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:29,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:31:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:29,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:29,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-11-29 01:31:29,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899853353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:29,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:29,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-29 01:31:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219648899] [2023-11-29 01:31:29,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:29,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:29,915 INFO L87 Difference]: Start difference. First operand 27937 states and 29400 transitions. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:31,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:31,822 INFO L93 Difference]: Finished difference Result 64866 states and 68014 transitions. [2023-11-29 01:31:31,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:31,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 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 1001 [2023-11-29 01:31:31,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:31,851 INFO L225 Difference]: With dead ends: 64866 [2023-11-29 01:31:31,851 INFO L226 Difference]: Without dead ends: 36930 [2023-11-29 01:31:31,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 1000 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:31,865 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 563 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:31,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 134 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:31:31,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36930 states. [2023-11-29 01:31:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36930 to 29733. [2023-11-29 01:31:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29733 states, 29732 states have (on average 1.0507870308085565) internal successors, (31242), 29732 states have internal predecessors, (31242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29733 states to 29733 states and 31242 transitions. [2023-11-29 01:31:32,201 INFO L78 Accepts]: Start accepts. Automaton has 29733 states and 31242 transitions. Word has length 1001 [2023-11-29 01:31:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:32,202 INFO L495 AbstractCegarLoop]: Abstraction has 29733 states and 31242 transitions. [2023-11-29 01:31:32,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 29733 states and 31242 transitions. [2023-11-29 01:31:32,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2023-11-29 01:31:32,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:32,216 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:31:32,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:31:32,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:31:32,416 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:32,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1952619527, now seen corresponding path program 1 times [2023-11-29 01:31:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:32,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172663603] [2023-11-29 01:31:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 700 proven. 707 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-11-29 01:31:34,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172663603] [2023-11-29 01:31:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172663603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111972135] [2023-11-29 01:31:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:34,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:34,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:34,325 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:34,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:31:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:34,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:31:34,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 1138 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2023-11-29 01:31:35,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111972135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:35,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:31:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835048078] [2023-11-29 01:31:35,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:35,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:35,113 INFO L87 Difference]: Start difference. First operand 29733 states and 31242 transitions. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:36,236 INFO L93 Difference]: Finished difference Result 58862 states and 61876 transitions. [2023-11-29 01:31:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 1039 [2023-11-29 01:31:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:36,260 INFO L225 Difference]: With dead ends: 58862 [2023-11-29 01:31:36,260 INFO L226 Difference]: Without dead ends: 29429 [2023-11-29 01:31:36,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:36,272 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 129 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:36,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 523 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:31:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29429 states. [2023-11-29 01:31:36,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29429 to 29428. [2023-11-29 01:31:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29428 states, 29427 states have (on average 1.043293573928705) internal successors, (30701), 29427 states have internal predecessors, (30701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29428 states to 29428 states and 30701 transitions. [2023-11-29 01:31:36,627 INFO L78 Accepts]: Start accepts. Automaton has 29428 states and 30701 transitions. Word has length 1039 [2023-11-29 01:31:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:36,628 INFO L495 AbstractCegarLoop]: Abstraction has 29428 states and 30701 transitions. [2023-11-29 01:31:36,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 29428 states and 30701 transitions. [2023-11-29 01:31:36,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2023-11-29 01:31:36,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:36,641 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:36,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:31:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:36,842 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:36,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash 179142506, now seen corresponding path program 1 times [2023-11-29 01:31:36,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:36,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356949361] [2023-11-29 01:31:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 1338 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-11-29 01:31:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356949361] [2023-11-29 01:31:37,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356949361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:37,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:37,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523070648] [2023-11-29 01:31:37,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:37,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:37,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:37,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:37,344 INFO L87 Difference]: Start difference. First operand 29428 states and 30701 transitions. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:38,706 INFO L93 Difference]: Finished difference Result 67544 states and 70449 transitions. [2023-11-29 01:31:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 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 1052 [2023-11-29 01:31:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:38,735 INFO L225 Difference]: With dead ends: 67544 [2023-11-29 01:31:38,736 INFO L226 Difference]: Without dead ends: 38416 [2023-11-29 01:31:38,750 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 01:31:38,751 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 54 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:38,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 542 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:31:38,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38416 states. [2023-11-29 01:31:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38416 to 36008. [2023-11-29 01:31:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36008 states, 36007 states have (on average 1.0402699475102064) internal successors, (37457), 36007 states have internal predecessors, (37457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36008 states to 36008 states and 37457 transitions. [2023-11-29 01:31:39,153 INFO L78 Accepts]: Start accepts. Automaton has 36008 states and 37457 transitions. Word has length 1052 [2023-11-29 01:31:39,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:39,154 INFO L495 AbstractCegarLoop]: Abstraction has 36008 states and 37457 transitions. [2023-11-29 01:31:39,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:39,154 INFO L276 IsEmpty]: Start isEmpty. Operand 36008 states and 37457 transitions. [2023-11-29 01:31:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2023-11-29 01:31:39,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:39,172 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:31:39,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 01:31:39,173 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:39,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1111757268, now seen corresponding path program 1 times [2023-11-29 01:31:39,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:39,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796424816] [2023-11-29 01:31:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:39,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 1222 proven. 0 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2023-11-29 01:31:40,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:40,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796424816] [2023-11-29 01:31:40,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796424816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:40,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:40,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426561856] [2023-11-29 01:31:40,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:40,058 INFO L87 Difference]: Start difference. First operand 36008 states and 37457 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:41,640 INFO L93 Difference]: Finished difference Result 81318 states and 84539 transitions. [2023-11-29 01:31:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:41,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 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 1125 [2023-11-29 01:31:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:41,675 INFO L225 Difference]: With dead ends: 81318 [2023-11-29 01:31:41,675 INFO L226 Difference]: Without dead ends: 45610 [2023-11-29 01:31:41,690 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 01:31:41,691 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 260 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:41,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 141 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:31:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45610 states. [2023-11-29 01:31:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45610 to 41703. [2023-11-29 01:31:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41703 states, 41702 states have (on average 1.0381036880725145) internal successors, (43291), 41702 states have internal predecessors, (43291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41703 states to 41703 states and 43291 transitions. [2023-11-29 01:31:42,268 INFO L78 Accepts]: Start accepts. Automaton has 41703 states and 43291 transitions. Word has length 1125 [2023-11-29 01:31:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:42,269 INFO L495 AbstractCegarLoop]: Abstraction has 41703 states and 43291 transitions. [2023-11-29 01:31:42,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 41703 states and 43291 transitions. [2023-11-29 01:31:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2023-11-29 01:31:42,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:42,299 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:42,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 01:31:42,299 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:42,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:42,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2027626393, now seen corresponding path program 1 times [2023-11-29 01:31:42,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:42,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577393437] [2023-11-29 01:31:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:42,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1165 proven. 269 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-11-29 01:31:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577393437] [2023-11-29 01:31:44,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577393437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008221773] [2023-11-29 01:31:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:44,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:44,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:44,281 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:44,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:31:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:44,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:44,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1062 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2023-11-29 01:31:45,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:45,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008221773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:45,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:45,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-29 01:31:45,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872724201] [2023-11-29 01:31:45,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:45,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:45,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:45,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:45,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:45,483 INFO L87 Difference]: Start difference. First operand 41703 states and 43291 transitions. Second operand has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:47,974 INFO L93 Difference]: Finished difference Result 92097 states and 95472 transitions. [2023-11-29 01:31:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 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 1140 [2023-11-29 01:31:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:48,018 INFO L225 Difference]: With dead ends: 92097 [2023-11-29 01:31:48,019 INFO L226 Difference]: Without dead ends: 50395 [2023-11-29 01:31:48,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:48,038 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 388 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:48,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 141 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 01:31:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50395 states. [2023-11-29 01:31:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50395 to 41703. [2023-11-29 01:31:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41703 states, 41702 states have (on average 1.0381036880725145) internal successors, (43291), 41702 states have internal predecessors, (43291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41703 states to 41703 states and 43291 transitions. [2023-11-29 01:31:48,541 INFO L78 Accepts]: Start accepts. Automaton has 41703 states and 43291 transitions. Word has length 1140 [2023-11-29 01:31:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:48,542 INFO L495 AbstractCegarLoop]: Abstraction has 41703 states and 43291 transitions. [2023-11-29 01:31:48,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 41703 states and 43291 transitions. [2023-11-29 01:31:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1178 [2023-11-29 01:31:48,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:48,560 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:48,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:31:48,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 01:31:48,761 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:48,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:48,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1453851240, now seen corresponding path program 1 times [2023-11-29 01:31:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:48,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692792785] [2023-11-29 01:31:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:48,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 1396 proven. 192 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 01:31:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692792785] [2023-11-29 01:31:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692792785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57384088] [2023-11-29 01:31:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:50,021 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:50,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:31:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:50,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:50,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 1099 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-11-29 01:31:51,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:51,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57384088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:51,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-29 01:31:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110508545] [2023-11-29 01:31:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:51,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:51,131 INFO L87 Difference]: Start difference. First operand 41703 states and 43291 transitions. Second operand has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:53,682 INFO L93 Difference]: Finished difference Result 90003 states and 93324 transitions. [2023-11-29 01:31:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 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 1177 [2023-11-29 01:31:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:53,720 INFO L225 Difference]: With dead ends: 90003 [2023-11-29 01:31:53,720 INFO L226 Difference]: Without dead ends: 47105 [2023-11-29 01:31:53,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1181 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:53,739 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 397 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:53,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 133 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:31:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47105 states. [2023-11-29 01:31:54,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47105 to 33919. [2023-11-29 01:31:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33919 states, 33918 states have (on average 1.0415118815967923) internal successors, (35326), 33918 states have internal predecessors, (35326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33919 states to 33919 states and 35326 transitions. [2023-11-29 01:31:54,260 INFO L78 Accepts]: Start accepts. Automaton has 33919 states and 35326 transitions. Word has length 1177 [2023-11-29 01:31:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:54,261 INFO L495 AbstractCegarLoop]: Abstraction has 33919 states and 35326 transitions. [2023-11-29 01:31:54,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 33919 states and 35326 transitions. [2023-11-29 01:31:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2023-11-29 01:31:54,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:54,278 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:54,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:31:54,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 01:31:54,479 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:54,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:54,479 INFO L85 PathProgramCache]: Analyzing trace with hash -365855719, now seen corresponding path program 1 times [2023-11-29 01:31:54,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:54,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11949287] [2023-11-29 01:31:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:54,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2770 backedges. 1090 proven. 0 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2023-11-29 01:31:57,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:57,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11949287] [2023-11-29 01:31:57,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11949287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:57,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:57,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:31:57,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348949563] [2023-11-29 01:31:57,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:57,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:31:57,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:57,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:31:57,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:57,207 INFO L87 Difference]: Start difference. First operand 33919 states and 35326 transitions. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:59,466 INFO L93 Difference]: Finished difference Result 69117 states and 71949 transitions. [2023-11-29 01:31:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:31:59,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 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 1206 [2023-11-29 01:31:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:59,496 INFO L225 Difference]: With dead ends: 69117 [2023-11-29 01:31:59,496 INFO L226 Difference]: Without dead ends: 35498 [2023-11-29 01:31:59,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:59,511 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 768 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:59,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 581 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:31:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35498 states. [2023-11-29 01:31:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35498 to 33919. [2023-11-29 01:31:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33919 states, 33918 states have (on average 1.0406568783536765) internal successors, (35297), 33918 states have internal predecessors, (35297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33919 states to 33919 states and 35297 transitions. [2023-11-29 01:31:59,914 INFO L78 Accepts]: Start accepts. Automaton has 33919 states and 35297 transitions. Word has length 1206 [2023-11-29 01:31:59,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:59,915 INFO L495 AbstractCegarLoop]: Abstraction has 33919 states and 35297 transitions. [2023-11-29 01:31:59,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:59,915 INFO L276 IsEmpty]: Start isEmpty. Operand 33919 states and 35297 transitions. [2023-11-29 01:31:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2023-11-29 01:31:59,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:59,935 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:59,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 01:31:59,936 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:59,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1432518295, now seen corresponding path program 1 times [2023-11-29 01:31:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704833705] [2023-11-29 01:31:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3257 backedges. 2198 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2023-11-29 01:32:00,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704833705] [2023-11-29 01:32:00,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704833705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:00,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:32:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:32:00,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375666785] [2023-11-29 01:32:00,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:32:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:00,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:32:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:32:00,944 INFO L87 Difference]: Start difference. First operand 33919 states and 35297 transitions. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:02,486 INFO L93 Difference]: Finished difference Result 71749 states and 74614 transitions. [2023-11-29 01:32:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:32:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 1272 [2023-11-29 01:32:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:02,516 INFO L225 Difference]: With dead ends: 71749 [2023-11-29 01:32:02,516 INFO L226 Difference]: Without dead ends: 38130 [2023-11-29 01:32:02,529 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 01:32:02,530 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 224 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:02,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 156 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:32:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38130 states. [2023-11-29 01:32:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38130 to 33617. [2023-11-29 01:32:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33617 states, 33616 states have (on average 1.0403676820561638) internal successors, (34973), 33616 states have internal predecessors, (34973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33617 states to 33617 states and 34973 transitions. [2023-11-29 01:32:02,896 INFO L78 Accepts]: Start accepts. Automaton has 33617 states and 34973 transitions. Word has length 1272 [2023-11-29 01:32:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:02,897 INFO L495 AbstractCegarLoop]: Abstraction has 33617 states and 34973 transitions. [2023-11-29 01:32:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 33617 states and 34973 transitions. [2023-11-29 01:32:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1441 [2023-11-29 01:32:02,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:02,921 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:02,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 01:32:02,921 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:02,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:02,922 INFO L85 PathProgramCache]: Analyzing trace with hash -977879465, now seen corresponding path program 1 times [2023-11-29 01:32:02,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:02,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569417886] [2023-11-29 01:32:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:02,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3774 backedges. 2144 proven. 0 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2023-11-29 01:32:03,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:03,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569417886] [2023-11-29 01:32:03,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569417886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:03,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:32:03,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:32:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699312527] [2023-11-29 01:32:03,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:03,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:32:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:32:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:32:03,590 INFO L87 Difference]: Start difference. First operand 33617 states and 34973 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:05,004 INFO L93 Difference]: Finished difference Result 70525 states and 73308 transitions. [2023-11-29 01:32:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:32:05,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 1440 [2023-11-29 01:32:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:05,032 INFO L225 Difference]: With dead ends: 70525 [2023-11-29 01:32:05,032 INFO L226 Difference]: Without dead ends: 37208 [2023-11-29 01:32:05,044 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 01:32:05,045 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 337 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:05,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 469 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:32:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37208 states. [2023-11-29 01:32:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37208 to 34804. [2023-11-29 01:32:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34804 states, 34803 states have (on average 1.0371519696577882) internal successors, (36096), 34803 states have internal predecessors, (36096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34804 states to 34804 states and 36096 transitions. [2023-11-29 01:32:05,419 INFO L78 Accepts]: Start accepts. Automaton has 34804 states and 36096 transitions. Word has length 1440 [2023-11-29 01:32:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:05,420 INFO L495 AbstractCegarLoop]: Abstraction has 34804 states and 36096 transitions. [2023-11-29 01:32:05,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 34804 states and 36096 transitions. [2023-11-29 01:32:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1549 [2023-11-29 01:32:05,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:05,444 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:05,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 01:32:05,444 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:05,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1027375999, now seen corresponding path program 1 times [2023-11-29 01:32:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225565157] [2023-11-29 01:32:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:05,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4924 backedges. 2612 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-11-29 01:32:07,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:07,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225565157] [2023-11-29 01:32:07,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225565157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:07,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:32:07,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:32:07,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449530860] [2023-11-29 01:32:07,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:07,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:32:07,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:32:07,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:32:07,290 INFO L87 Difference]: Start difference. First operand 34804 states and 36096 transitions. Second operand has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:10,282 INFO L93 Difference]: Finished difference Result 72359 states and 75000 transitions. [2023-11-29 01:32:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:32:10,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 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 1548 [2023-11-29 01:32:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:10,312 INFO L225 Difference]: With dead ends: 72359 [2023-11-29 01:32:10,312 INFO L226 Difference]: Without dead ends: 37855 [2023-11-29 01:32:10,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:32:10,328 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1846 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:10,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 182 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 01:32:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37855 states. [2023-11-29 01:32:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37855 to 35102. [2023-11-29 01:32:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35102 states, 35101 states have (on average 1.0361243269422524) internal successors, (36369), 35101 states have internal predecessors, (36369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35102 states to 35102 states and 36369 transitions. [2023-11-29 01:32:10,816 INFO L78 Accepts]: Start accepts. Automaton has 35102 states and 36369 transitions. Word has length 1548 [2023-11-29 01:32:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:10,817 INFO L495 AbstractCegarLoop]: Abstraction has 35102 states and 36369 transitions. [2023-11-29 01:32:10,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 35102 states and 36369 transitions. [2023-11-29 01:32:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1766 [2023-11-29 01:32:10,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:10,845 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:10,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 01:32:10,845 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:10,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:10,847 INFO L85 PathProgramCache]: Analyzing trace with hash -497237571, now seen corresponding path program 1 times [2023-11-29 01:32:10,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:10,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503224778] [2023-11-29 01:32:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:10,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7975 backedges. 4427 proven. 0 refuted. 0 times theorem prover too weak. 3548 trivial. 0 not checked. [2023-11-29 01:32:12,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:12,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503224778] [2023-11-29 01:32:12,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503224778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:12,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:32:12,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:32:12,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867720070] [2023-11-29 01:32:12,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:12,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:32:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:12,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:32:12,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:32:12,190 INFO L87 Difference]: Start difference. First operand 35102 states and 36369 transitions. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:14,000 INFO L93 Difference]: Finished difference Result 70798 states and 73169 transitions. [2023-11-29 01:32:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:32:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 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 1765 [2023-11-29 01:32:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:14,025 INFO L225 Difference]: With dead ends: 70798 [2023-11-29 01:32:14,025 INFO L226 Difference]: Without dead ends: 33004 [2023-11-29 01:32:14,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:32:14,040 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 603 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:14,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 455 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:32:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33004 states. [2023-11-29 01:32:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33004 to 26999. [2023-11-29 01:32:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26999 states, 26998 states have (on average 1.02840951181569) internal successors, (27765), 26998 states have internal predecessors, (27765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26999 states to 26999 states and 27765 transitions. [2023-11-29 01:32:14,454 INFO L78 Accepts]: Start accepts. Automaton has 26999 states and 27765 transitions. Word has length 1765 [2023-11-29 01:32:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:14,455 INFO L495 AbstractCegarLoop]: Abstraction has 26999 states and 27765 transitions. [2023-11-29 01:32:14,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 26999 states and 27765 transitions. [2023-11-29 01:32:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1802 [2023-11-29 01:32:14,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:14,482 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:14,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 01:32:14,482 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:14,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash 730416494, now seen corresponding path program 1 times [2023-11-29 01:32:14,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:14,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811687258] [2023-11-29 01:32:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8022 backedges. 4020 proven. 0 refuted. 0 times theorem prover too weak. 4002 trivial. 0 not checked. [2023-11-29 01:32:15,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:15,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811687258] [2023-11-29 01:32:15,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811687258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:15,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:32:15,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:32:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129047658] [2023-11-29 01:32:15,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:15,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:32:15,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:32:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:32:15,498 INFO L87 Difference]: Start difference. First operand 26999 states and 27765 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:16,596 INFO L93 Difference]: Finished difference Result 54593 states and 56133 transitions. [2023-11-29 01:32:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:32:16,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 1801 [2023-11-29 01:32:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:16,617 INFO L225 Difference]: With dead ends: 54593 [2023-11-29 01:32:16,618 INFO L226 Difference]: Without dead ends: 25502 [2023-11-29 01:32:16,629 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 01:32:16,630 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 209 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:16,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 211 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:32:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25502 states. [2023-11-29 01:32:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25502 to 21910. [2023-11-29 01:32:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21910 states, 21909 states have (on average 1.0214067278287462) internal successors, (22378), 21909 states have internal predecessors, (22378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21910 states to 21910 states and 22378 transitions. [2023-11-29 01:32:16,869 INFO L78 Accepts]: Start accepts. Automaton has 21910 states and 22378 transitions. Word has length 1801 [2023-11-29 01:32:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:16,870 INFO L495 AbstractCegarLoop]: Abstraction has 21910 states and 22378 transitions. [2023-11-29 01:32:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 21910 states and 22378 transitions. [2023-11-29 01:32:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1857 [2023-11-29 01:32:16,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:16,899 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:16,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 01:32:16,899 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:16,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1367591953, now seen corresponding path program 1 times [2023-11-29 01:32:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:16,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381713192] [2023-11-29 01:32:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:16,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7681 backedges. 3727 proven. 0 refuted. 0 times theorem prover too weak. 3954 trivial. 0 not checked. [2023-11-29 01:32:18,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381713192] [2023-11-29 01:32:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381713192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:18,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:32:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:32:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649968500] [2023-11-29 01:32:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:18,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:32:18,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:18,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:32:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:32:18,411 INFO L87 Difference]: Start difference. First operand 21910 states and 22378 transitions. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:19,468 INFO L93 Difference]: Finished difference Result 43819 states and 44742 transitions. [2023-11-29 01:32:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:32:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 1856 [2023-11-29 01:32:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:19,486 INFO L225 Difference]: With dead ends: 43819 [2023-11-29 01:32:19,486 INFO L226 Difference]: Without dead ends: 22209 [2023-11-29 01:32:19,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:32:19,496 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 148 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:19,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 98 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:32:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22209 states. [2023-11-29 01:32:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22209 to 17410. [2023-11-29 01:32:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17410 states, 17409 states have (on average 1.0200471020736401) internal successors, (17758), 17409 states have internal predecessors, (17758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17410 states to 17410 states and 17758 transitions. [2023-11-29 01:32:19,698 INFO L78 Accepts]: Start accepts. Automaton has 17410 states and 17758 transitions. Word has length 1856 [2023-11-29 01:32:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:19,699 INFO L495 AbstractCegarLoop]: Abstraction has 17410 states and 17758 transitions. [2023-11-29 01:32:19,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 17410 states and 17758 transitions. [2023-11-29 01:32:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2193 [2023-11-29 01:32:19,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:19,732 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 01:32:19,732 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:19,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash -665786486, now seen corresponding path program 1 times [2023-11-29 01:32:19,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:19,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851980782] [2023-11-29 01:32:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10379 backedges. 7085 proven. 405 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-11-29 01:32:21,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:21,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851980782] [2023-11-29 01:32:21,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851980782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:21,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664730299] [2023-11-29 01:32:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:21,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:21,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:21,345 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:21,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:32:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:22,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:32:22,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10379 backedges. 7085 proven. 405 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-11-29 01:32:22,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:32:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10379 backedges. 7085 proven. 405 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-11-29 01:32:23,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664730299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:32:23,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:32:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-29 01:32:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760763847] [2023-11-29 01:32:23,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:32:23,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:32:23,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:32:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:32:23,465 INFO L87 Difference]: Start difference. First operand 17410 states and 17758 transitions. Second operand has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:25,299 INFO L93 Difference]: Finished difference Result 33620 states and 34296 transitions. [2023-11-29 01:32:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:32:25,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 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 2192 [2023-11-29 01:32:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:25,301 INFO L225 Difference]: With dead ends: 33620 [2023-11-29 01:32:25,301 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 01:32:25,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4386 GetRequests, 4381 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:32:25,308 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 547 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:25,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 138 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:32:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 01:32:25,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 01:32:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 01:32:25,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2192 [2023-11-29 01:32:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:25,310 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 01:32:25,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 01:32:25,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 01:32:25,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:32:25,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:32:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08878dae-6f09-4ad0-90fd-34e6295a60f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 01:32:25,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.