./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd --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 927c21c2096a228a934a41e2a18844ff0d670b1b365a7d276a4e36116ab9babc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:48:24,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:48:24,134 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:48:24,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:48:24,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:48:24,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:48:24,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:48:24,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:48:24,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:48:24,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:48:24,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:48:24,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:48:24,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:48:24,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:48:24,187 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:48:24,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:48:24,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:48:24,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:48:24,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:48:24,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:48:24,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:48:24,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:48:24,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:48:24,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:48:24,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:48:24,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:24,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:48:24,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:48:24,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:48:24,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:48:24,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:48:24,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:48:24,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:48:24,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:48:24,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:48:24,191 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd 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 -> 927c21c2096a228a934a41e2a18844ff0d670b1b365a7d276a4e36116ab9babc [2024-11-13 12:48:24,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:48:24,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:48:24,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:48:24,555 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:48:24,556 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:48:24,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-13 12:48:26,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:48:26,792 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:48:26,796 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2024-11-13 12:48:26,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/data/f8e6658dc/5a01c59d9f6d4bd8ace4810ea65341b9/FLAG82c4999ea [2024-11-13 12:48:26,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/data/f8e6658dc/5a01c59d9f6d4bd8ace4810ea65341b9 [2024-11-13 12:48:26,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:48:26,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:48:26,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:26,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:48:26,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:48:26,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:26" (1/1) ... [2024-11-13 12:48:26,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbc9fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:26, skipping insertion in model container [2024-11-13 12:48:26,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:26" (1/1) ... [2024-11-13 12:48:26,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:48:27,111 WARN L250 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_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c[9376,9389] [2024-11-13 12:48:27,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:27,133 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:48:27,213 WARN L250 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_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c[9376,9389] [2024-11-13 12:48:27,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:27,235 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:48:27,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27 WrapperNode [2024-11-13 12:48:27,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:27,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:27,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:48:27,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:48:27,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,294 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 312 [2024-11-13 12:48:27,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:27,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:48:27,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:48:27,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:48:27,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,327 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 12:48:27,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:48:27,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:48:27,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:48:27,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:48:27,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (1/1) ... [2024-11-13 12:48:27,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:27,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:48:27,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:48:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:48:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:48:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:48:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:48:27,551 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:48:27,553 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:48:28,078 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-13 12:48:28,078 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:48:28,089 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:48:28,090 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 12:48:28,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:28 BoogieIcfgContainer [2024-11-13 12:48:28,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:48:28,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:48:28,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:48:28,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:48:28,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:48:26" (1/3) ... [2024-11-13 12:48:28,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f3d7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:28, skipping insertion in model container [2024-11-13 12:48:28,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:27" (2/3) ... [2024-11-13 12:48:28,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f3d7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:28, skipping insertion in model container [2024-11-13 12:48:28,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:28" (3/3) ... [2024-11-13 12:48:28,102 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2024-11-13 12:48:28,120 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:48:28,124 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c that has 1 procedures, 85 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 12:48:28,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:48:28,201 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a7158f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:48:28,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:48:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 84 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 12:48:28,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:28,213 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:28,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:28,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:28,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1020513472, now seen corresponding path program 1 times [2024-11-13 12:48:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:28,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081936375] [2024-11-13 12:48:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:28,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:28,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:28,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081936375] [2024-11-13 12:48:28,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081936375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:28,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:28,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:48:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901083354] [2024-11-13 12:48:28,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:28,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 12:48:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 12:48:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 12:48:28,568 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 84 states have internal predecessors, (143), 0 states have call successors, (0), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:28,585 INFO L93 Difference]: Finished difference Result 137 states and 229 transitions. [2024-11-13 12:48:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 12:48:28,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-13 12:48:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:28,594 INFO L225 Difference]: With dead ends: 137 [2024-11-13 12:48:28,594 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 12:48:28,597 INFO L431 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 [2024-11-13 12:48:28,600 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:28,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 12:48:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-13 12:48:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.7) internal successors, (136), 80 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 136 transitions. [2024-11-13 12:48:28,675 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 136 transitions. Word has length 29 [2024-11-13 12:48:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:28,676 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 136 transitions. [2024-11-13 12:48:28,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 136 transitions. [2024-11-13 12:48:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 12:48:28,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:28,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:28,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:48:28,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:28,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 886499966, now seen corresponding path program 1 times [2024-11-13 12:48:28,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:28,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742668132] [2024-11-13 12:48:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:29,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:29,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742668132] [2024-11-13 12:48:29,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742668132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:29,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:29,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:29,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488039550] [2024-11-13 12:48:29,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:29,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:29,070 INFO L87 Difference]: Start difference. First operand 81 states and 136 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:29,179 INFO L93 Difference]: Finished difference Result 136 states and 222 transitions. [2024-11-13 12:48:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-13 12:48:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:29,181 INFO L225 Difference]: With dead ends: 136 [2024-11-13 12:48:29,181 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 12:48:29,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:29,186 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:29,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 507 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:29,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 12:48:29,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-13 12:48:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4) internal successors, (112), 80 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2024-11-13 12:48:29,195 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 29 [2024-11-13 12:48:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:29,195 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2024-11-13 12:48:29,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2024-11-13 12:48:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 12:48:29,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:29,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:29,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:48:29,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:29,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1875536503, now seen corresponding path program 1 times [2024-11-13 12:48:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357131716] [2024-11-13 12:48:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:29,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357131716] [2024-11-13 12:48:29,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357131716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:29,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:29,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072172643] [2024-11-13 12:48:29,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:29,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:29,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:29,372 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:29,421 INFO L93 Difference]: Finished difference Result 175 states and 262 transitions. [2024-11-13 12:48:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 12:48:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:29,424 INFO L225 Difference]: With dead ends: 175 [2024-11-13 12:48:29,424 INFO L226 Difference]: Without dead ends: 124 [2024-11-13 12:48:29,424 INFO L431 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 [2024-11-13 12:48:29,425 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 66 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:29,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 241 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-13 12:48:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2024-11-13 12:48:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.4710743801652892) internal successors, (178), 121 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 178 transitions. [2024-11-13 12:48:29,442 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 178 transitions. Word has length 52 [2024-11-13 12:48:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:29,442 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 178 transitions. [2024-11-13 12:48:29,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 178 transitions. [2024-11-13 12:48:29,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 12:48:29,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:29,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:29,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:48:29,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:29,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1241000136, now seen corresponding path program 1 times [2024-11-13 12:48:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839595395] [2024-11-13 12:48:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:29,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:29,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839595395] [2024-11-13 12:48:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839595395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:29,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:29,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:29,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209684971] [2024-11-13 12:48:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:29,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:29,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:29,620 INFO L87 Difference]: Start difference. First operand 122 states and 178 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:29,673 INFO L93 Difference]: Finished difference Result 290 states and 446 transitions. [2024-11-13 12:48:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:29,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 12:48:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:29,677 INFO L225 Difference]: With dead ends: 290 [2024-11-13 12:48:29,677 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 12:48:29,678 INFO L431 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 [2024-11-13 12:48:29,682 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 62 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:29,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 238 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 12:48:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2024-11-13 12:48:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 195 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 295 transitions. [2024-11-13 12:48:29,710 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 295 transitions. Word has length 52 [2024-11-13 12:48:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:29,711 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 295 transitions. [2024-11-13 12:48:29,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 295 transitions. [2024-11-13 12:48:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 12:48:29,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:29,712 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:29,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:48:29,712 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:29,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1236520057, now seen corresponding path program 1 times [2024-11-13 12:48:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805716230] [2024-11-13 12:48:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:30,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805716230] [2024-11-13 12:48:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805716230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:30,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:30,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:48:30,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058630337] [2024-11-13 12:48:30,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:30,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:48:30,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:48:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:48:30,014 INFO L87 Difference]: Start difference. First operand 196 states and 295 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:30,211 INFO L93 Difference]: Finished difference Result 1026 states and 1620 transitions. [2024-11-13 12:48:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:48:30,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 12:48:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:30,220 INFO L225 Difference]: With dead ends: 1026 [2024-11-13 12:48:30,220 INFO L226 Difference]: Without dead ends: 860 [2024-11-13 12:48:30,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:48:30,225 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 754 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:30,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 667 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-11-13 12:48:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 360. [2024-11-13 12:48:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.5348189415041782) internal successors, (551), 359 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 551 transitions. [2024-11-13 12:48:30,289 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 551 transitions. Word has length 52 [2024-11-13 12:48:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:30,289 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 551 transitions. [2024-11-13 12:48:30,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 551 transitions. [2024-11-13 12:48:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 12:48:30,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:30,290 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:30,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:48:30,292 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:30,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash -705907272, now seen corresponding path program 1 times [2024-11-13 12:48:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:30,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741232364] [2024-11-13 12:48:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741232364] [2024-11-13 12:48:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741232364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:30,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:30,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 12:48:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531450451] [2024-11-13 12:48:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:30,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 12:48:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 12:48:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:48:30,877 INFO L87 Difference]: Start difference. First operand 360 states and 551 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-11-13 12:48:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:30,953 INFO L93 Difference]: Finished difference Result 386 states and 584 transitions. [2024-11-13 12:48:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 12:48:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2024-11-13 12:48:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:30,958 INFO L225 Difference]: With dead ends: 386 [2024-11-13 12:48:30,958 INFO L226 Difference]: Without dead ends: 384 [2024-11-13 12:48:30,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:48:30,963 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:30,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 730 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:30,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-13 12:48:30,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-11-13 12:48:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.5013054830287207) internal successors, (575), 383 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 575 transitions. [2024-11-13 12:48:30,995 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 575 transitions. Word has length 53 [2024-11-13 12:48:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:30,996 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 575 transitions. [2024-11-13 12:48:30,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-11-13 12:48:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 575 transitions. [2024-11-13 12:48:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 12:48:30,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:30,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:30,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:48:30,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:31,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash -355710415, now seen corresponding path program 1 times [2024-11-13 12:48:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:31,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293207912] [2024-11-13 12:48:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:31,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293207912] [2024-11-13 12:48:31,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293207912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:31,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:31,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583461270] [2024-11-13 12:48:31,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:31,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:31,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:31,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:31,163 INFO L87 Difference]: Start difference. First operand 384 states and 575 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:31,212 INFO L93 Difference]: Finished difference Result 1032 states and 1565 transitions. [2024-11-13 12:48:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:31,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 12:48:31,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:31,215 INFO L225 Difference]: With dead ends: 1032 [2024-11-13 12:48:31,215 INFO L226 Difference]: Without dead ends: 678 [2024-11-13 12:48:31,217 INFO L431 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 [2024-11-13 12:48:31,220 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 50 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:31,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 186 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-13 12:48:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 668. [2024-11-13 12:48:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 1.4917541229385307) internal successors, (995), 667 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 995 transitions. [2024-11-13 12:48:31,264 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 995 transitions. Word has length 54 [2024-11-13 12:48:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:31,264 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 995 transitions. [2024-11-13 12:48:31,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 995 transitions. [2024-11-13 12:48:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 12:48:31,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:31,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:31,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 12:48:31,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:31,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash 823768401, now seen corresponding path program 1 times [2024-11-13 12:48:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:31,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700684014] [2024-11-13 12:48:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:31,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700684014] [2024-11-13 12:48:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700684014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:31,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:31,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281725571] [2024-11-13 12:48:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:31,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:31,390 INFO L87 Difference]: Start difference. First operand 668 states and 995 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:31,449 INFO L93 Difference]: Finished difference Result 1816 states and 2701 transitions. [2024-11-13 12:48:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 12:48:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:31,458 INFO L225 Difference]: With dead ends: 1816 [2024-11-13 12:48:31,458 INFO L226 Difference]: Without dead ends: 1178 [2024-11-13 12:48:31,459 INFO L431 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 [2024-11-13 12:48:31,460 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 58 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:31,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2024-11-13 12:48:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2024-11-13 12:48:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.4629787234042553) internal successors, (1719), 1175 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1719 transitions. [2024-11-13 12:48:31,544 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1719 transitions. Word has length 55 [2024-11-13 12:48:31,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:31,545 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1719 transitions. [2024-11-13 12:48:31,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1719 transitions. [2024-11-13 12:48:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 12:48:31,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:31,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:31,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 12:48:31,547 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:31,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:31,547 INFO L85 PathProgramCache]: Analyzing trace with hash -147236496, now seen corresponding path program 1 times [2024-11-13 12:48:31,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:31,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277480683] [2024-11-13 12:48:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:31,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:31,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:31,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277480683] [2024-11-13 12:48:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277480683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:31,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122568580] [2024-11-13 12:48:31,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:31,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:31,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:31,663 INFO L87 Difference]: Start difference. First operand 1176 states and 1719 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:31,747 INFO L93 Difference]: Finished difference Result 2319 states and 3421 transitions. [2024-11-13 12:48:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:31,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-13 12:48:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:31,760 INFO L225 Difference]: With dead ends: 2319 [2024-11-13 12:48:31,760 INFO L226 Difference]: Without dead ends: 1676 [2024-11-13 12:48:31,761 INFO L431 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 [2024-11-13 12:48:31,765 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 67 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:31,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 253 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2024-11-13 12:48:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1674. [2024-11-13 12:48:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 1.4542737597130904) internal successors, (2433), 1673 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2433 transitions. [2024-11-13 12:48:31,862 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2433 transitions. Word has length 56 [2024-11-13 12:48:31,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:31,863 INFO L471 AbstractCegarLoop]: Abstraction has 1674 states and 2433 transitions. [2024-11-13 12:48:31,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2433 transitions. [2024-11-13 12:48:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 12:48:31,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:31,865 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:31,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 12:48:31,866 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:31,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1291242461, now seen corresponding path program 1 times [2024-11-13 12:48:31,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:31,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291946244] [2024-11-13 12:48:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:31,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 12:48:32,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291946244] [2024-11-13 12:48:32,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291946244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:32,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:32,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:48:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303377708] [2024-11-13 12:48:32,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:32,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:48:32,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:48:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:48:32,092 INFO L87 Difference]: Start difference. First operand 1674 states and 2433 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:32,314 INFO L93 Difference]: Finished difference Result 4724 states and 6970 transitions. [2024-11-13 12:48:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:48:32,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 78 [2024-11-13 12:48:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:32,329 INFO L225 Difference]: With dead ends: 4724 [2024-11-13 12:48:32,329 INFO L226 Difference]: Without dead ends: 3890 [2024-11-13 12:48:32,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:48:32,333 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 471 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:32,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 684 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2024-11-13 12:48:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 2482. [2024-11-13 12:48:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2481 states have (on average 1.456267634018541) internal successors, (3613), 2481 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3613 transitions. [2024-11-13 12:48:32,453 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3613 transitions. Word has length 78 [2024-11-13 12:48:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:32,453 INFO L471 AbstractCegarLoop]: Abstraction has 2482 states and 3613 transitions. [2024-11-13 12:48:32,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3613 transitions. [2024-11-13 12:48:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 12:48:32,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:32,458 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:32,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 12:48:32,459 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:32,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1316544795, now seen corresponding path program 1 times [2024-11-13 12:48:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:32,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820245962] [2024-11-13 12:48:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 12:48:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820245962] [2024-11-13 12:48:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820245962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:32,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:48:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524098565] [2024-11-13 12:48:32,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:32,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:48:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:48:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:48:32,675 INFO L87 Difference]: Start difference. First operand 2482 states and 3613 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:32,906 INFO L93 Difference]: Finished difference Result 5532 states and 8150 transitions. [2024-11-13 12:48:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:48:32,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 78 [2024-11-13 12:48:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:32,927 INFO L225 Difference]: With dead ends: 5532 [2024-11-13 12:48:32,927 INFO L226 Difference]: Without dead ends: 4698 [2024-11-13 12:48:32,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:48:32,930 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 506 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:32,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 614 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2024-11-13 12:48:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 3290. [2024-11-13 12:48:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.4572818485861965) internal successors, (4793), 3289 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4793 transitions. [2024-11-13 12:48:33,120 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4793 transitions. Word has length 78 [2024-11-13 12:48:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:33,121 INFO L471 AbstractCegarLoop]: Abstraction has 3290 states and 4793 transitions. [2024-11-13 12:48:33,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4793 transitions. [2024-11-13 12:48:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 12:48:33,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:33,127 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:33,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 12:48:33,127 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:33,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1693056230, now seen corresponding path program 1 times [2024-11-13 12:48:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:33,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117004094] [2024-11-13 12:48:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:48:33,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:33,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117004094] [2024-11-13 12:48:33,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117004094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:33,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:33,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:48:33,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210923039] [2024-11-13 12:48:33,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:33,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:48:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:33,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:48:33,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:48:33,304 INFO L87 Difference]: Start difference. First operand 3290 states and 4793 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:33,540 INFO L93 Difference]: Finished difference Result 6340 states and 9330 transitions. [2024-11-13 12:48:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:48:33,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 78 [2024-11-13 12:48:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:33,560 INFO L225 Difference]: With dead ends: 6340 [2024-11-13 12:48:33,561 INFO L226 Difference]: Without dead ends: 5506 [2024-11-13 12:48:33,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:48:33,564 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 483 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:33,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 639 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5506 states. [2024-11-13 12:48:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 4098. [2024-11-13 12:48:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.457896021479131) internal successors, (5973), 4097 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5973 transitions. [2024-11-13 12:48:33,751 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 5973 transitions. Word has length 78 [2024-11-13 12:48:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:33,751 INFO L471 AbstractCegarLoop]: Abstraction has 4098 states and 5973 transitions. [2024-11-13 12:48:33,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 5973 transitions. [2024-11-13 12:48:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 12:48:33,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:33,754 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:33,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 12:48:33,755 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:33,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:33,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1524476923, now seen corresponding path program 1 times [2024-11-13 12:48:33,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:33,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268207503] [2024-11-13 12:48:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:33,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268207503] [2024-11-13 12:48:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268207503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:33,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695757879] [2024-11-13 12:48:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:33,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:33,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:33,906 INFO L87 Difference]: Start difference. First operand 4098 states and 5973 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:34,011 INFO L93 Difference]: Finished difference Result 8166 states and 11915 transitions. [2024-11-13 12:48:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:34,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-11-13 12:48:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:34,027 INFO L225 Difference]: With dead ends: 8166 [2024-11-13 12:48:34,027 INFO L226 Difference]: Without dead ends: 4100 [2024-11-13 12:48:34,031 INFO L431 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 [2024-11-13 12:48:34,033 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 53 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:34,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 234 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2024-11-13 12:48:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 4098. [2024-11-13 12:48:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.4432511593849158) internal successors, (5913), 4097 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5913 transitions. [2024-11-13 12:48:34,231 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 5913 transitions. Word has length 79 [2024-11-13 12:48:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:34,231 INFO L471 AbstractCegarLoop]: Abstraction has 4098 states and 5913 transitions. [2024-11-13 12:48:34,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 5913 transitions. [2024-11-13 12:48:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 12:48:34,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:34,234 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:48:34,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 12:48:34,235 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:34,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1910725242, now seen corresponding path program 1 times [2024-11-13 12:48:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:34,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163143937] [2024-11-13 12:48:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:34,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:36,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:36,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163143937] [2024-11-13 12:48:36,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163143937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:48:36,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705959113] [2024-11-13 12:48:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:36,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:48:36,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:36,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:48:36,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:48:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:36,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 12:48:36,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:48:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:37,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:48:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:38,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705959113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:48:38,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:48:38,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 28 [2024-11-13 12:48:38,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750760886] [2024-11-13 12:48:38,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:48:38,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 12:48:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 12:48:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2024-11-13 12:48:38,831 INFO L87 Difference]: Start difference. First operand 4098 states and 5913 transitions. Second operand has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:01,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:01,913 INFO L93 Difference]: Finished difference Result 53944 states and 78230 transitions. [2024-11-13 12:49:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2024-11-13 12:49:01,914 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 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 79 [2024-11-13 12:49:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:02,033 INFO L225 Difference]: With dead ends: 53944 [2024-11-13 12:49:02,033 INFO L226 Difference]: Without dead ends: 49878 [2024-11-13 12:49:02,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24904 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=8188, Invalid=49172, Unknown=0, NotChecked=0, Total=57360 [2024-11-13 12:49:02,113 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 12821 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12821 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:02,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12821 Valid, 1771 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-13 12:49:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49878 states. [2024-11-13 12:49:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49878 to 33844. [2024-11-13 12:49:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33844 states, 33843 states have (on average 1.4249032296191235) internal successors, (48223), 33843 states have internal predecessors, (48223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33844 states to 33844 states and 48223 transitions. [2024-11-13 12:49:03,745 INFO L78 Accepts]: Start accepts. Automaton has 33844 states and 48223 transitions. Word has length 79 [2024-11-13 12:49:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:03,746 INFO L471 AbstractCegarLoop]: Abstraction has 33844 states and 48223 transitions. [2024-11-13 12:49:03,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 33844 states and 48223 transitions. [2024-11-13 12:49:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 12:49:03,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:03,749 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:03,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:03,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 12:49:03,954 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:03,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:03,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1410060122, now seen corresponding path program 1 times [2024-11-13 12:49:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122456907] [2024-11-13 12:49:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:49:04,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:04,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122456907] [2024-11-13 12:49:04,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122456907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:04,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:04,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:49:04,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872889527] [2024-11-13 12:49:04,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:04,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:49:04,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:04,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:49:04,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:49:04,131 INFO L87 Difference]: Start difference. First operand 33844 states and 48223 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:05,177 INFO L93 Difference]: Finished difference Result 61683 states and 88466 transitions. [2024-11-13 12:49:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 80 [2024-11-13 12:49:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:05,297 INFO L225 Difference]: With dead ends: 61683 [2024-11-13 12:49:05,298 INFO L226 Difference]: Without dead ends: 54649 [2024-11-13 12:49:05,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:49:05,312 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 458 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:05,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 745 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:49:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54649 states. [2024-11-13 12:49:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54649 to 40577. [2024-11-13 12:49:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40577 states, 40576 states have (on average 1.4238219637223974) internal successors, (57773), 40576 states have internal predecessors, (57773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40577 states to 40577 states and 57773 transitions. [2024-11-13 12:49:06,850 INFO L78 Accepts]: Start accepts. Automaton has 40577 states and 57773 transitions. Word has length 80 [2024-11-13 12:49:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:06,851 INFO L471 AbstractCegarLoop]: Abstraction has 40577 states and 57773 transitions. [2024-11-13 12:49:06,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 40577 states and 57773 transitions. [2024-11-13 12:49:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 12:49:06,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:06,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:06,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 12:49:06,854 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:06,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1910530529, now seen corresponding path program 1 times [2024-11-13 12:49:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565000404] [2024-11-13 12:49:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565000404] [2024-11-13 12:49:07,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565000404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135586411] [2024-11-13 12:49:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:07,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:07,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:07,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:07,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:49:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:07,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 12:49:07,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:08,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:09,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135586411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:09,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:09,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-13 12:49:09,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104683461] [2024-11-13 12:49:09,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:09,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 12:49:09,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 12:49:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-13 12:49:09,801 INFO L87 Difference]: Start difference. First operand 40577 states and 57773 transitions. Second operand has 25 states, 25 states have (on average 9.36) internal successors, (234), 24 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:17,984 INFO L93 Difference]: Finished difference Result 299112 states and 430273 transitions. [2024-11-13 12:49:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-13 12:49:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.36) internal successors, (234), 24 states have internal predecessors, (234), 0 states have call successors, (0), 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 83 [2024-11-13 12:49:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:18,566 INFO L225 Difference]: With dead ends: 299112 [2024-11-13 12:49:18,566 INFO L226 Difference]: Without dead ends: 258884 [2024-11-13 12:49:18,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4350 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2390, Invalid=10720, Unknown=0, NotChecked=0, Total=13110 [2024-11-13 12:49:18,643 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 5557 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5557 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:18,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5557 Valid, 1368 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 12:49:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258884 states. [2024-11-13 12:49:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258884 to 157736. [2024-11-13 12:49:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157736 states, 157735 states have (on average 1.4129013852347292) internal successors, (222864), 157735 states have internal predecessors, (222864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157736 states to 157736 states and 222864 transitions. [2024-11-13 12:49:24,296 INFO L78 Accepts]: Start accepts. Automaton has 157736 states and 222864 transitions. Word has length 83 [2024-11-13 12:49:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:24,297 INFO L471 AbstractCegarLoop]: Abstraction has 157736 states and 222864 transitions. [2024-11-13 12:49:24,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.36) internal successors, (234), 24 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 157736 states and 222864 transitions. [2024-11-13 12:49:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 12:49:24,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:24,300 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:24,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:49:24,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 12:49:24,501 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:24,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1029399614, now seen corresponding path program 1 times [2024-11-13 12:49:24,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:24,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998298831] [2024-11-13 12:49:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:24,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998298831] [2024-11-13 12:49:24,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998298831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:24,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:24,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:49:24,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261849246] [2024-11-13 12:49:24,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:24,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:49:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:49:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:49:24,626 INFO L87 Difference]: Start difference. First operand 157736 states and 222864 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:27,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:27,715 INFO L93 Difference]: Finished difference Result 245001 states and 345665 transitions. [2024-11-13 12:49:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:49:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-11-13 12:49:27,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:27,826 INFO L225 Difference]: With dead ends: 245001 [2024-11-13 12:49:27,826 INFO L226 Difference]: Without dead ends: 88208 [2024-11-13 12:49:27,893 INFO L431 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 [2024-11-13 12:49:27,893 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 40 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:27,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 221 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:49:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88208 states. [2024-11-13 12:49:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88208 to 86508. [2024-11-13 12:49:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86508 states, 86507 states have (on average 1.383494977285075) internal successors, (119682), 86507 states have internal predecessors, (119682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86508 states to 86508 states and 119682 transitions. [2024-11-13 12:49:30,554 INFO L78 Accepts]: Start accepts. Automaton has 86508 states and 119682 transitions. Word has length 83 [2024-11-13 12:49:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:30,554 INFO L471 AbstractCegarLoop]: Abstraction has 86508 states and 119682 transitions. [2024-11-13 12:49:30,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 86508 states and 119682 transitions. [2024-11-13 12:49:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 12:49:30,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:30,557 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:30,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 12:49:30,557 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:30,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1086034916, now seen corresponding path program 1 times [2024-11-13 12:49:30,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:30,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966942602] [2024-11-13 12:49:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:30,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:31,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:31,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966942602] [2024-11-13 12:49:31,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966942602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:31,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994599250] [2024-11-13 12:49:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:31,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:31,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:49:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:31,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 12:49:31,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:31,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994599250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:33,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 29 [2024-11-13 12:49:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281457361] [2024-11-13 12:49:33,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:33,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 12:49:33,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 12:49:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-13 12:49:33,664 INFO L87 Difference]: Start difference. First operand 86508 states and 119682 transitions. Second operand has 29 states, 29 states have (on average 7.482758620689655) internal successors, (217), 29 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:38,542 INFO L93 Difference]: Finished difference Result 304986 states and 418951 transitions. [2024-11-13 12:49:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 12:49:38,543 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.482758620689655) internal successors, (217), 29 states have internal predecessors, (217), 0 states have call successors, (0), 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 83 [2024-11-13 12:49:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:38,814 INFO L225 Difference]: With dead ends: 304986 [2024-11-13 12:49:38,814 INFO L226 Difference]: Without dead ends: 218546 [2024-11-13 12:49:38,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=404, Invalid=1488, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 12:49:38,869 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 1437 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:38,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 867 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:49:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218546 states. [2024-11-13 12:49:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218546 to 184150. [2024-11-13 12:49:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184150 states, 184149 states have (on average 1.3633199202819457) internal successors, (251054), 184149 states have internal predecessors, (251054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184150 states to 184150 states and 251054 transitions. [2024-11-13 12:49:44,724 INFO L78 Accepts]: Start accepts. Automaton has 184150 states and 251054 transitions. Word has length 83 [2024-11-13 12:49:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:44,724 INFO L471 AbstractCegarLoop]: Abstraction has 184150 states and 251054 transitions. [2024-11-13 12:49:44,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.482758620689655) internal successors, (217), 29 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 184150 states and 251054 transitions. [2024-11-13 12:49:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 12:49:44,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:44,727 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:44,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:44,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0d066e-ca9b-4604-a26c-2ed2c7d9e4d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 12:49:44,928 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:44,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1282470412, now seen corresponding path program 1 times [2024-11-13 12:49:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155286288] [2024-11-13 12:49:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:44,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:45,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:45,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155286288] [2024-11-13 12:49:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155286288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:45,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:45,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:49:45,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358888919] [2024-11-13 12:49:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:45,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:49:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:49:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:49:45,006 INFO L87 Difference]: Start difference. First operand 184150 states and 251054 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)