./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a0f469ae37a514ddca8d0dce53a0af7478c9ef70fff43265912fb6cefbfb3984 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:16:14,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:16:14,987 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:16:14,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:16:14,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:16:15,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:16:15,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:16:15,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:16:15,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:16:15,017 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:16:15,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:16:15,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:16:15,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:16:15,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:16:15,019 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:16:15,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:16:15,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:16:15,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:16:15,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:16:15,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:16:15,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:16:15,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:16:15,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:16:15,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:16:15,025 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:16:15,025 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:16:15,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:16:15,025 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:16:15,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:16:15,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:16:15,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:16:15,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:16:15,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:16:15,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:16:15,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:16:15,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:16:15,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:16:15,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:16:15,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:16:15,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:16:15,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:16:15,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:16:15,030 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0f469ae37a514ddca8d0dce53a0af7478c9ef70fff43265912fb6cefbfb3984 [2024-11-18 16:16:15,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:16:15,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:16:15,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:16:15,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:16:15,328 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:16:15,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c [2024-11-18 16:16:16,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:16:17,099 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:16:17,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c [2024-11-18 16:16:17,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13b3a18f/e153401265054ab185484a2d4426df20/FLAG3517f595a [2024-11-18 16:16:17,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13b3a18f/e153401265054ab185484a2d4426df20 [2024-11-18 16:16:17,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:16:17,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:16:17,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:16:17,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:16:17,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:16:17,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:17,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b3df01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17, skipping insertion in model container [2024-11-18 16:16:17,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:17,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:16:17,749 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c[913,926] [2024-11-18 16:16:17,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c[5977,5990] [2024-11-18 16:16:17,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:16:17,889 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:16:17,900 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c[913,926] [2024-11-18 16:16:17,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-2.c[5977,5990] [2024-11-18 16:16:17,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:16:17,981 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:16:17,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17 WrapperNode [2024-11-18 16:16:17,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:16:17,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:16:17,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:16:17,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:16:17,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,035 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 543 [2024-11-18 16:16:18,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:16:18,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:16:18,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:16:18,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:16:18,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,069 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,091 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]. [2024-11-18 16:16:18,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:16:18,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:16:18,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:16:18,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:16:18,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (1/1) ... [2024-11-18 16:16:18,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:16:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:18,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 16:16:18,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 16:16:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:16:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:16:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:16:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-18 16:16:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-18 16:16:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:16:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:16:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:16:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:16:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:16:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:16:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:16:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:16:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:16:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:16:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:16:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:16:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:16:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:16:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:16:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:16:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:16:18,372 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:16:18,376 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:16:19,063 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-18 16:16:19,063 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:16:19,112 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:16:19,116 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-18 16:16:19,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:16:19 BoogieIcfgContainer [2024-11-18 16:16:19,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:16:19,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:16:19,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:16:19,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:16:19,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:16:17" (1/3) ... [2024-11-18 16:16:19,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b760d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:16:19, skipping insertion in model container [2024-11-18 16:16:19,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:17" (2/3) ... [2024-11-18 16:16:19,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b760d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:16:19, skipping insertion in model container [2024-11-18 16:16:19,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:16:19" (3/3) ... [2024-11-18 16:16:19,131 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.03.cil-2.c [2024-11-18 16:16:19,148 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:16:19,148 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:16:19,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:16:19,237 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;@6f749bf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:16:19,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:16:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 198 states have (on average 1.5707070707070707) internal successors, (311), 203 states have internal predecessors, (311), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-18 16:16:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 16:16:19,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:19,254 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] [2024-11-18 16:16:19,254 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:19,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash -12812106, now seen corresponding path program 1 times [2024-11-18 16:16:19,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064613590] [2024-11-18 16:16:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:19,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064613590] [2024-11-18 16:16:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064613590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:19,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:19,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:19,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63506870] [2024-11-18 16:16:19,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:19,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:19,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:19,585 INFO L87 Difference]: Start difference. First operand has 233 states, 198 states have (on average 1.5707070707070707) internal successors, (311), 203 states have internal predecessors, (311), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:19,711 INFO L93 Difference]: Finished difference Result 509 states and 784 transitions. [2024-11-18 16:16:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:19,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-18 16:16:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:19,734 INFO L225 Difference]: With dead ends: 509 [2024-11-18 16:16:19,735 INFO L226 Difference]: Without dead ends: 282 [2024-11-18 16:16:19,739 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 [2024-11-18 16:16:19,742 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 311 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:19,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 430 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-18 16:16:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2024-11-18 16:16:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 239 states have (on average 1.4435146443514644) internal successors, (345), 242 states have internal predecessors, (345), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (29), 25 states have call predecessors, (29), 25 states have call successors, (29) [2024-11-18 16:16:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2024-11-18 16:16:19,816 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 44 [2024-11-18 16:16:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:19,817 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2024-11-18 16:16:19,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2024-11-18 16:16:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:16:19,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:19,823 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] [2024-11-18 16:16:19,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:16:19,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:19,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 275032628, now seen corresponding path program 1 times [2024-11-18 16:16:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:19,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736484102] [2024-11-18 16:16:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:19,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:19,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736484102] [2024-11-18 16:16:19,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736484102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:19,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:19,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:19,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305375221] [2024-11-18 16:16:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:19,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:19,961 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:20,034 INFO L93 Difference]: Finished difference Result 486 states and 689 transitions. [2024-11-18 16:16:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:20,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-18 16:16:20,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:20,039 INFO L225 Difference]: With dead ends: 486 [2024-11-18 16:16:20,039 INFO L226 Difference]: Without dead ends: 371 [2024-11-18 16:16:20,040 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 [2024-11-18 16:16:20,042 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 67 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:20,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 647 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:20,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-18 16:16:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 345. [2024-11-18 16:16:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 300 states have (on average 1.43) internal successors, (429), 303 states have internal predecessors, (429), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33) [2024-11-18 16:16:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 492 transitions. [2024-11-18 16:16:20,087 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 492 transitions. Word has length 45 [2024-11-18 16:16:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:20,088 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 492 transitions. [2024-11-18 16:16:20,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 492 transitions. [2024-11-18 16:16:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:16:20,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:20,091 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] [2024-11-18 16:16:20,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:16:20,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:20,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1009324833, now seen corresponding path program 1 times [2024-11-18 16:16:20,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:20,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758406853] [2024-11-18 16:16:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:20,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:20,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:20,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758406853] [2024-11-18 16:16:20,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758406853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:20,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:20,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:20,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851902832] [2024-11-18 16:16:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:20,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:20,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:20,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:20,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:20,193 INFO L87 Difference]: Start difference. First operand 345 states and 492 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:20,256 INFO L93 Difference]: Finished difference Result 698 states and 980 transitions. [2024-11-18 16:16:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:20,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-18 16:16:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:20,263 INFO L225 Difference]: With dead ends: 698 [2024-11-18 16:16:20,263 INFO L226 Difference]: Without dead ends: 516 [2024-11-18 16:16:20,264 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 [2024-11-18 16:16:20,267 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 298 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:20,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 410 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-18 16:16:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 502. [2024-11-18 16:16:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 439 states have (on average 1.3917995444191344) internal successors, (611), 444 states have internal predecessors, (611), 41 states have call successors, (41), 21 states have call predecessors, (41), 20 states have return successors, (49), 37 states have call predecessors, (49), 39 states have call successors, (49) [2024-11-18 16:16:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 701 transitions. [2024-11-18 16:16:20,320 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 701 transitions. Word has length 45 [2024-11-18 16:16:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:20,320 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 701 transitions. [2024-11-18 16:16:20,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 701 transitions. [2024-11-18 16:16:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 16:16:20,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:20,327 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] [2024-11-18 16:16:20,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:16:20,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:20,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash 118715014, now seen corresponding path program 1 times [2024-11-18 16:16:20,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:20,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906454187] [2024-11-18 16:16:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 16:16:20,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906454187] [2024-11-18 16:16:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906454187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:20,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236162909] [2024-11-18 16:16:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:20,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:20,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:20,465 INFO L87 Difference]: Start difference. First operand 502 states and 701 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:20,569 INFO L93 Difference]: Finished difference Result 1014 states and 1398 transitions. [2024-11-18 16:16:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:20,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-18 16:16:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:20,575 INFO L225 Difference]: With dead ends: 1014 [2024-11-18 16:16:20,576 INFO L226 Difference]: Without dead ends: 675 [2024-11-18 16:16:20,579 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 [2024-11-18 16:16:20,580 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 55 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:20,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 692 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-18 16:16:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2024-11-18 16:16:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 590 states have (on average 1.3423728813559321) internal successors, (792), 595 states have internal predecessors, (792), 55 states have call successors, (55), 29 states have call predecessors, (55), 28 states have return successors, (71), 51 states have call predecessors, (71), 53 states have call successors, (71) [2024-11-18 16:16:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 918 transitions. [2024-11-18 16:16:20,640 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 918 transitions. Word has length 62 [2024-11-18 16:16:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:20,641 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 918 transitions. [2024-11-18 16:16:20,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 918 transitions. [2024-11-18 16:16:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:16:20,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:20,649 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] [2024-11-18 16:16:20,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:16:20,649 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:20,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1415006571, now seen corresponding path program 1 times [2024-11-18 16:16:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:20,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081002121] [2024-11-18 16:16:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:20,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 16:16:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081002121] [2024-11-18 16:16:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081002121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:20,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:20,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:20,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002912627] [2024-11-18 16:16:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:20,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:20,703 INFO L87 Difference]: Start difference. First operand 675 states and 918 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:20,761 INFO L93 Difference]: Finished difference Result 1222 states and 1639 transitions. [2024-11-18 16:16:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:20,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-18 16:16:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:20,767 INFO L225 Difference]: With dead ends: 1222 [2024-11-18 16:16:20,767 INFO L226 Difference]: Without dead ends: 802 [2024-11-18 16:16:20,769 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 [2024-11-18 16:16:20,770 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 285 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:20,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 406 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-11-18 16:16:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2024-11-18 16:16:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 703 states have (on average 1.3143669985775248) internal successors, (924), 708 states have internal predecessors, (924), 63 states have call successors, (63), 35 states have call predecessors, (63), 34 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2024-11-18 16:16:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1070 transitions. [2024-11-18 16:16:20,815 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1070 transitions. Word has length 67 [2024-11-18 16:16:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:20,815 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 1070 transitions. [2024-11-18 16:16:20,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1070 transitions. [2024-11-18 16:16:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:16:20,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:20,819 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:20,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:16:20,820 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:20,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1218722923, now seen corresponding path program 1 times [2024-11-18 16:16:20,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932673217] [2024-11-18 16:16:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:20,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:20,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:20,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932673217] [2024-11-18 16:16:20,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932673217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633691740] [2024-11-18 16:16:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:20,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:20,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:20,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:16:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:21,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 16:16:21,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:21,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:16:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:21,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633691740] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:21,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 16:16:21,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-18 16:16:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945362921] [2024-11-18 16:16:21,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:21,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:16:21,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:16:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:16:21,302 INFO L87 Difference]: Start difference. First operand 802 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:21,494 INFO L93 Difference]: Finished difference Result 858 states and 1138 transitions. [2024-11-18 16:16:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:21,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-18 16:16:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:21,500 INFO L225 Difference]: With dead ends: 858 [2024-11-18 16:16:21,500 INFO L226 Difference]: Without dead ends: 855 [2024-11-18 16:16:21,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:16:21,504 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 565 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:21,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 414 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-18 16:16:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 801. [2024-11-18 16:16:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 703 states have (on average 1.3115220483641536) internal successors, (922), 707 states have internal predecessors, (922), 62 states have call successors, (62), 35 states have call predecessors, (62), 34 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2024-11-18 16:16:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1067 transitions. [2024-11-18 16:16:21,568 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1067 transitions. Word has length 68 [2024-11-18 16:16:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:21,568 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1067 transitions. [2024-11-18 16:16:21,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1067 transitions. [2024-11-18 16:16:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:21,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:21,572 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:21,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 16:16:21,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 16:16:21,773 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:21,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash 873558424, now seen corresponding path program 1 times [2024-11-18 16:16:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:21,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740537211] [2024-11-18 16:16:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:21,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740537211] [2024-11-18 16:16:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740537211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318080526] [2024-11-18 16:16:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:21,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:21,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:21,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:21,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 16:16:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:22,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:16:22,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:22,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:16:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318080526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:16:22,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:16:22,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-18 16:16:22,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565257217] [2024-11-18 16:16:22,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:16:22,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 16:16:22,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:22,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 16:16:22,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:16:22,456 INFO L87 Difference]: Start difference. First operand 801 states and 1067 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 16:16:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:22,981 INFO L93 Difference]: Finished difference Result 2145 states and 2851 transitions. [2024-11-18 16:16:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 16:16:22,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-18 16:16:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:22,991 INFO L225 Difference]: With dead ends: 2145 [2024-11-18 16:16:22,991 INFO L226 Difference]: Without dead ends: 1652 [2024-11-18 16:16:22,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-18 16:16:22,995 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 709 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:22,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2748 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:16:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2024-11-18 16:16:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1158. [2024-11-18 16:16:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1024 states have (on average 1.2880859375) internal successors, (1319), 1033 states have internal predecessors, (1319), 82 states have call successors, (82), 49 states have call predecessors, (82), 50 states have return successors, (114), 76 states have call predecessors, (114), 81 states have call successors, (114) [2024-11-18 16:16:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1515 transitions. [2024-11-18 16:16:23,085 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1515 transitions. Word has length 69 [2024-11-18 16:16:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:23,085 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1515 transitions. [2024-11-18 16:16:23,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 16:16:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1515 transitions. [2024-11-18 16:16:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:23,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:23,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:23,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 16:16:23,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-18 16:16:23,292 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:23,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:23,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1541906059, now seen corresponding path program 1 times [2024-11-18 16:16:23,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:23,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519424264] [2024-11-18 16:16:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:23,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519424264] [2024-11-18 16:16:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519424264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:23,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:23,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661883962] [2024-11-18 16:16:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:23,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:23,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:23,402 INFO L87 Difference]: Start difference. First operand 1158 states and 1515 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:23,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:23,851 INFO L93 Difference]: Finished difference Result 1460 states and 1967 transitions. [2024-11-18 16:16:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:16:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:23,859 INFO L225 Difference]: With dead ends: 1460 [2024-11-18 16:16:23,859 INFO L226 Difference]: Without dead ends: 1315 [2024-11-18 16:16:23,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:23,861 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 506 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:23,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 778 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-11-18 16:16:23,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1304. [2024-11-18 16:16:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1151 states have (on average 1.3119026933101652) internal successors, (1510), 1161 states have internal predecessors, (1510), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (127), 88 states have call predecessors, (127), 93 states have call successors, (127) [2024-11-18 16:16:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1731 transitions. [2024-11-18 16:16:23,953 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1731 transitions. Word has length 79 [2024-11-18 16:16:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:23,954 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 1731 transitions. [2024-11-18 16:16:23,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1731 transitions. [2024-11-18 16:16:23,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:23,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:23,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:23,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:16:23,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:23,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1304857863, now seen corresponding path program 1 times [2024-11-18 16:16:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60870742] [2024-11-18 16:16:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:24,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:24,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60870742] [2024-11-18 16:16:24,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60870742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:24,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:24,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126404585] [2024-11-18 16:16:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:24,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:24,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:24,091 INFO L87 Difference]: Start difference. First operand 1304 states and 1731 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:24,699 INFO L93 Difference]: Finished difference Result 1775 states and 2436 transitions. [2024-11-18 16:16:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:24,708 INFO L225 Difference]: With dead ends: 1775 [2024-11-18 16:16:24,709 INFO L226 Difference]: Without dead ends: 1484 [2024-11-18 16:16:24,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:24,712 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 498 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:24,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1364 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:16:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2024-11-18 16:16:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1441. [2024-11-18 16:16:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1269 states have (on average 1.326241134751773) internal successors, (1683), 1280 states have internal predecessors, (1683), 106 states have call successors, (106), 61 states have call predecessors, (106), 64 states have return successors, (142), 101 states have call predecessors, (142), 105 states have call successors, (142) [2024-11-18 16:16:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1931 transitions. [2024-11-18 16:16:24,797 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1931 transitions. Word has length 79 [2024-11-18 16:16:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:24,798 INFO L471 AbstractCegarLoop]: Abstraction has 1441 states and 1931 transitions. [2024-11-18 16:16:24,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1931 transitions. [2024-11-18 16:16:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:24,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:24,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:24,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:16:24,804 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:24,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1359250761, now seen corresponding path program 1 times [2024-11-18 16:16:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:24,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705363613] [2024-11-18 16:16:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:24,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:24,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705363613] [2024-11-18 16:16:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705363613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:24,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:24,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164697769] [2024-11-18 16:16:24,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:24,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:24,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:24,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:24,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:24,929 INFO L87 Difference]: Start difference. First operand 1441 states and 1931 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:25,300 INFO L93 Difference]: Finished difference Result 1899 states and 2617 transitions. [2024-11-18 16:16:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:25,309 INFO L225 Difference]: With dead ends: 1899 [2024-11-18 16:16:25,310 INFO L226 Difference]: Without dead ends: 1471 [2024-11-18 16:16:25,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:25,313 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 400 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:25,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 588 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:16:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2024-11-18 16:16:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1441. [2024-11-18 16:16:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1269 states have (on average 1.3238770685579195) internal successors, (1680), 1280 states have internal predecessors, (1680), 106 states have call successors, (106), 61 states have call predecessors, (106), 64 states have return successors, (142), 101 states have call predecessors, (142), 105 states have call successors, (142) [2024-11-18 16:16:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1928 transitions. [2024-11-18 16:16:25,447 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1928 transitions. Word has length 79 [2024-11-18 16:16:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:25,448 INFO L471 AbstractCegarLoop]: Abstraction has 1441 states and 1928 transitions. [2024-11-18 16:16:25,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1928 transitions. [2024-11-18 16:16:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:25,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:25,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:25,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:16:25,452 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:25,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:25,453 INFO L85 PathProgramCache]: Analyzing trace with hash -679978507, now seen corresponding path program 1 times [2024-11-18 16:16:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730043213] [2024-11-18 16:16:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:25,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730043213] [2024-11-18 16:16:25,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730043213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:25,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:25,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976873186] [2024-11-18 16:16:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:25,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:25,559 INFO L87 Difference]: Start difference. First operand 1441 states and 1928 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:25,936 INFO L93 Difference]: Finished difference Result 1894 states and 2601 transitions. [2024-11-18 16:16:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:25,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:25,946 INFO L225 Difference]: With dead ends: 1894 [2024-11-18 16:16:25,946 INFO L226 Difference]: Without dead ends: 1466 [2024-11-18 16:16:25,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:25,949 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 395 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:25,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 578 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:16:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2024-11-18 16:16:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1441. [2024-11-18 16:16:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1269 states have (on average 1.3215130023640662) internal successors, (1677), 1280 states have internal predecessors, (1677), 106 states have call successors, (106), 61 states have call predecessors, (106), 64 states have return successors, (142), 101 states have call predecessors, (142), 105 states have call successors, (142) [2024-11-18 16:16:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1925 transitions. [2024-11-18 16:16:26,068 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1925 transitions. Word has length 79 [2024-11-18 16:16:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:26,069 INFO L471 AbstractCegarLoop]: Abstraction has 1441 states and 1925 transitions. [2024-11-18 16:16:26,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:26,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1925 transitions. [2024-11-18 16:16:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:26,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:26,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:26,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:16:26,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:26,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1281596151, now seen corresponding path program 1 times [2024-11-18 16:16:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271198710] [2024-11-18 16:16:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:26,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271198710] [2024-11-18 16:16:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271198710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:26,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:26,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:26,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327771002] [2024-11-18 16:16:26,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:26,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:26,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:26,231 INFO L87 Difference]: Start difference. First operand 1441 states and 1925 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:26,947 INFO L93 Difference]: Finished difference Result 2214 states and 3056 transitions. [2024-11-18 16:16:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:26,958 INFO L225 Difference]: With dead ends: 2214 [2024-11-18 16:16:26,958 INFO L226 Difference]: Without dead ends: 1786 [2024-11-18 16:16:26,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:26,963 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 509 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:26,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 983 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:16:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2024-11-18 16:16:27,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1703. [2024-11-18 16:16:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1493 states have (on average 1.3395847287340925) internal successors, (2000), 1508 states have internal predecessors, (2000), 128 states have call successors, (128), 73 states have call predecessors, (128), 80 states have return successors, (176), 125 states have call predecessors, (176), 127 states have call successors, (176) [2024-11-18 16:16:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2304 transitions. [2024-11-18 16:16:27,159 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2304 transitions. Word has length 79 [2024-11-18 16:16:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:27,159 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2304 transitions. [2024-11-18 16:16:27,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2304 transitions. [2024-11-18 16:16:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:27,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:27,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:27,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:16:27,164 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:27,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1483420085, now seen corresponding path program 1 times [2024-11-18 16:16:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389631839] [2024-11-18 16:16:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:27,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:27,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:27,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389631839] [2024-11-18 16:16:27,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389631839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:27,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:27,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:27,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818351060] [2024-11-18 16:16:27,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:27,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:27,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:27,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:27,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:27,286 INFO L87 Difference]: Start difference. First operand 1703 states and 2304 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:28,037 INFO L93 Difference]: Finished difference Result 3028 states and 4245 transitions. [2024-11-18 16:16:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:28,050 INFO L225 Difference]: With dead ends: 3028 [2024-11-18 16:16:28,051 INFO L226 Difference]: Without dead ends: 2338 [2024-11-18 16:16:28,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:28,055 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 513 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:28,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1271 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:16:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2024-11-18 16:16:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2246. [2024-11-18 16:16:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 1956 states have (on average 1.3640081799591002) internal successors, (2668), 1985 states have internal predecessors, (2668), 170 states have call successors, (170), 97 states have call predecessors, (170), 118 states have return successors, (266), 171 states have call predecessors, (266), 169 states have call successors, (266) [2024-11-18 16:16:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 3104 transitions. [2024-11-18 16:16:28,258 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 3104 transitions. Word has length 79 [2024-11-18 16:16:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:28,259 INFO L471 AbstractCegarLoop]: Abstraction has 2246 states and 3104 transitions. [2024-11-18 16:16:28,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 3104 transitions. [2024-11-18 16:16:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:28,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:28,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:28,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:16:28,264 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:28,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2044119863, now seen corresponding path program 1 times [2024-11-18 16:16:28,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153323111] [2024-11-18 16:16:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:28,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:28,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153323111] [2024-11-18 16:16:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153323111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:28,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:28,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891925832] [2024-11-18 16:16:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:28,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:28,403 INFO L87 Difference]: Start difference. First operand 2246 states and 3104 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:28,859 INFO L93 Difference]: Finished difference Result 3537 states and 5019 transitions. [2024-11-18 16:16:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:28,873 INFO L225 Difference]: With dead ends: 3537 [2024-11-18 16:16:28,873 INFO L226 Difference]: Without dead ends: 2304 [2024-11-18 16:16:28,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:28,879 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 390 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:28,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 558 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:16:28,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2024-11-18 16:16:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2246. [2024-11-18 16:16:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 1956 states have (on average 1.3594069529652353) internal successors, (2659), 1985 states have internal predecessors, (2659), 170 states have call successors, (170), 97 states have call predecessors, (170), 118 states have return successors, (266), 171 states have call predecessors, (266), 169 states have call successors, (266) [2024-11-18 16:16:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 3095 transitions. [2024-11-18 16:16:29,195 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 3095 transitions. Word has length 79 [2024-11-18 16:16:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:29,195 INFO L471 AbstractCegarLoop]: Abstraction has 2246 states and 3095 transitions. [2024-11-18 16:16:29,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 3095 transitions. [2024-11-18 16:16:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 16:16:29,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:29,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:29,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:16:29,200 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:29,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:29,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1817118347, now seen corresponding path program 1 times [2024-11-18 16:16:29,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:29,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051144552] [2024-11-18 16:16:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:29,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:29,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051144552] [2024-11-18 16:16:29,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051144552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:29,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:29,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:16:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724245545] [2024-11-18 16:16:29,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:29,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:16:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:16:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:16:29,276 INFO L87 Difference]: Start difference. First operand 2246 states and 3095 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:29,622 INFO L93 Difference]: Finished difference Result 4180 states and 5974 transitions. [2024-11-18 16:16:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 16:16:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:29,637 INFO L225 Difference]: With dead ends: 4180 [2024-11-18 16:16:29,637 INFO L226 Difference]: Without dead ends: 2948 [2024-11-18 16:16:29,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:16:29,644 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 473 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:29,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 940 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2024-11-18 16:16:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2910. [2024-11-18 16:16:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2525 states have (on average 1.3663366336633664) internal successors, (3450), 2565 states have internal predecessors, (3450), 229 states have call successors, (229), 127 states have call predecessors, (229), 154 states have return successors, (338), 225 states have call predecessors, (338), 228 states have call successors, (338) [2024-11-18 16:16:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4017 transitions. [2024-11-18 16:16:29,904 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4017 transitions. Word has length 79 [2024-11-18 16:16:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:29,905 INFO L471 AbstractCegarLoop]: Abstraction has 2910 states and 4017 transitions. [2024-11-18 16:16:29,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4017 transitions. [2024-11-18 16:16:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 16:16:29,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:29,910 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 16:16:29,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:16:29,910 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:29,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1821993712, now seen corresponding path program 1 times [2024-11-18 16:16:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944624701] [2024-11-18 16:16:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:29,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 16:16:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944624701] [2024-11-18 16:16:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944624701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558337254] [2024-11-18 16:16:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:29,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:29,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:29,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:29,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 16:16:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:30,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:30,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:30,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:30,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558337254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:30,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:30,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:30,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317690240] [2024-11-18 16:16:30,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:30,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:30,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:30,124 INFO L87 Difference]: Start difference. First operand 2910 states and 4017 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 16:16:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:30,342 INFO L93 Difference]: Finished difference Result 3556 states and 4858 transitions. [2024-11-18 16:16:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:30,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-18 16:16:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:30,357 INFO L225 Difference]: With dead ends: 3556 [2024-11-18 16:16:30,357 INFO L226 Difference]: Without dead ends: 2792 [2024-11-18 16:16:30,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:30,360 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 279 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:30,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 424 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:30,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2024-11-18 16:16:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2777. [2024-11-18 16:16:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2406 states have (on average 1.3690773067331672) internal successors, (3294), 2447 states have internal predecessors, (3294), 221 states have call successors, (221), 121 states have call predecessors, (221), 148 states have return successors, (326), 216 states have call predecessors, (326), 220 states have call successors, (326) [2024-11-18 16:16:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 3841 transitions. [2024-11-18 16:16:30,587 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 3841 transitions. Word has length 88 [2024-11-18 16:16:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:30,588 INFO L471 AbstractCegarLoop]: Abstraction has 2777 states and 3841 transitions. [2024-11-18 16:16:30,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 16:16:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 3841 transitions. [2024-11-18 16:16:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 16:16:30,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:30,594 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:30,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:30,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:30,799 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:30,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1696413132, now seen corresponding path program 1 times [2024-11-18 16:16:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419790593] [2024-11-18 16:16:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 16:16:30,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419790593] [2024-11-18 16:16:30,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419790593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337833013] [2024-11-18 16:16:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:30,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:30,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:30,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:30,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 16:16:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:31,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:31,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 16:16:31,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337833013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:31,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:31,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56075587] [2024-11-18 16:16:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:31,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:31,037 INFO L87 Difference]: Start difference. First operand 2777 states and 3841 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 16:16:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:31,324 INFO L93 Difference]: Finished difference Result 3154 states and 4307 transitions. [2024-11-18 16:16:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:31,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-18 16:16:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:31,346 INFO L225 Difference]: With dead ends: 3154 [2024-11-18 16:16:31,347 INFO L226 Difference]: Without dead ends: 1909 [2024-11-18 16:16:31,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:31,352 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 62 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:31,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 658 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2024-11-18 16:16:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1909. [2024-11-18 16:16:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1634 states have (on average 1.4247246022031823) internal successors, (2328), 1666 states have internal predecessors, (2328), 164 states have call successors, (164), 84 states have call predecessors, (164), 110 states have return successors, (241), 166 states have call predecessors, (241), 164 states have call successors, (241) [2024-11-18 16:16:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2733 transitions. [2024-11-18 16:16:31,569 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2733 transitions. Word has length 103 [2024-11-18 16:16:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:31,569 INFO L471 AbstractCegarLoop]: Abstraction has 1909 states and 2733 transitions. [2024-11-18 16:16:31,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 16:16:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2733 transitions. [2024-11-18 16:16:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 16:16:31,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:31,576 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:31,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 16:16:31,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 16:16:31,777 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:31,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:31,778 INFO L85 PathProgramCache]: Analyzing trace with hash 748705152, now seen corresponding path program 1 times [2024-11-18 16:16:31,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:31,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032326140] [2024-11-18 16:16:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:31,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 16:16:31,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032326140] [2024-11-18 16:16:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032326140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079619481] [2024-11-18 16:16:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:31,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:31,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:31,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:31,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 16:16:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:31,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:31,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 16:16:32,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:32,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079619481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:32,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:32,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975245326] [2024-11-18 16:16:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:32,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:32,047 INFO L87 Difference]: Start difference. First operand 1909 states and 2733 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:32,307 INFO L93 Difference]: Finished difference Result 5630 states and 8115 transitions. [2024-11-18 16:16:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2024-11-18 16:16:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:32,336 INFO L225 Difference]: With dead ends: 5630 [2024-11-18 16:16:32,337 INFO L226 Difference]: Without dead ends: 3734 [2024-11-18 16:16:32,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:32,346 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 179 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:32,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 421 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2024-11-18 16:16:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3704. [2024-11-18 16:16:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3173 states have (on average 1.4229435865111881) internal successors, (4515), 3236 states have internal predecessors, (4515), 310 states have call successors, (310), 168 states have call predecessors, (310), 220 states have return successors, (457), 307 states have call predecessors, (457), 310 states have call successors, (457) [2024-11-18 16:16:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 5282 transitions. [2024-11-18 16:16:32,672 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 5282 transitions. Word has length 129 [2024-11-18 16:16:32,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:32,672 INFO L471 AbstractCegarLoop]: Abstraction has 3704 states and 5282 transitions. [2024-11-18 16:16:32,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:32,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 5282 transitions. [2024-11-18 16:16:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 16:16:32,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:32,682 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:32,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:32,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 16:16:32,887 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:32,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2118008480, now seen corresponding path program 1 times [2024-11-18 16:16:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817374291] [2024-11-18 16:16:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 16:16:32,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817374291] [2024-11-18 16:16:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817374291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092069861] [2024-11-18 16:16:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:32,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:32,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:32,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 16:16:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:33,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:33,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 16:16:33,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092069861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:33,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:33,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:33,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730956232] [2024-11-18 16:16:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:33,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:33,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:33,119 INFO L87 Difference]: Start difference. First operand 3704 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 16:16:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:33,638 INFO L93 Difference]: Finished difference Result 10923 states and 15786 transitions. [2024-11-18 16:16:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:33,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2024-11-18 16:16:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:33,702 INFO L225 Difference]: With dead ends: 10923 [2024-11-18 16:16:33,703 INFO L226 Difference]: Without dead ends: 7233 [2024-11-18 16:16:33,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:33,721 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 194 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:33,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 647 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:33,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7233 states. [2024-11-18 16:16:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7233 to 7233. [2024-11-18 16:16:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 6193 states have (on average 1.4180526400775069) internal successors, (8782), 6309 states have internal predecessors, (8782), 599 states have call successors, (599), 336 states have call predecessors, (599), 440 states have return successors, (1012), 603 states have call predecessors, (1012), 599 states have call successors, (1012) [2024-11-18 16:16:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 10393 transitions. [2024-11-18 16:16:34,454 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 10393 transitions. Word has length 129 [2024-11-18 16:16:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:34,455 INFO L471 AbstractCegarLoop]: Abstraction has 7233 states and 10393 transitions. [2024-11-18 16:16:34,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 16:16:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 10393 transitions. [2024-11-18 16:16:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 16:16:34,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:34,478 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:34,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:34,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:34,681 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:34,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash 868309426, now seen corresponding path program 1 times [2024-11-18 16:16:34,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:34,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332545659] [2024-11-18 16:16:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:34,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 16:16:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332545659] [2024-11-18 16:16:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332545659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213087694] [2024-11-18 16:16:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:34,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:34,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:34,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:34,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 16:16:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:34,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:34,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 16:16:35,063 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:35,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213087694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:35,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:35,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743263552] [2024-11-18 16:16:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:35,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:35,066 INFO L87 Difference]: Start difference. First operand 7233 states and 10393 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 16:16:36,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:36,056 INFO L93 Difference]: Finished difference Result 21355 states and 30926 transitions. [2024-11-18 16:16:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:36,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 168 [2024-11-18 16:16:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:36,130 INFO L225 Difference]: With dead ends: 21355 [2024-11-18 16:16:36,131 INFO L226 Difference]: Without dead ends: 14141 [2024-11-18 16:16:36,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:36,165 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 126 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:36,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 421 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2024-11-18 16:16:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 14027. [2024-11-18 16:16:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14027 states, 12027 states have (on average 1.4159807100690114) internal successors, (17030), 12257 states have internal predecessors, (17030), 1127 states have call successors, (1127), 664 states have call predecessors, (1127), 872 states have return successors, (1904), 1121 states have call predecessors, (1904), 1127 states have call successors, (1904) [2024-11-18 16:16:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14027 states to 14027 states and 20061 transitions. [2024-11-18 16:16:37,815 INFO L78 Accepts]: Start accepts. Automaton has 14027 states and 20061 transitions. Word has length 168 [2024-11-18 16:16:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:37,816 INFO L471 AbstractCegarLoop]: Abstraction has 14027 states and 20061 transitions. [2024-11-18 16:16:37,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 16:16:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14027 states and 20061 transitions. [2024-11-18 16:16:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 16:16:37,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:37,864 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:37,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 16:16:38,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:38,069 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:38,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2061901714, now seen corresponding path program 1 times [2024-11-18 16:16:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920547565] [2024-11-18 16:16:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 16:16:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920547565] [2024-11-18 16:16:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920547565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:38,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010483924] [2024-11-18 16:16:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:38,186 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:38,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 16:16:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:38,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:38,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 16:16:38,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:38,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010483924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:38,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:38,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:38,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954576520] [2024-11-18 16:16:38,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:38,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:38,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:38,475 INFO L87 Difference]: Start difference. First operand 14027 states and 20061 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 16:16:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:40,338 INFO L93 Difference]: Finished difference Result 41595 states and 59978 transitions. [2024-11-18 16:16:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 168 [2024-11-18 16:16:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:40,481 INFO L225 Difference]: With dead ends: 41595 [2024-11-18 16:16:40,481 INFO L226 Difference]: Without dead ends: 27587 [2024-11-18 16:16:40,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:40,538 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 128 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:40,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 429 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27587 states. [2024-11-18 16:16:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27587 to 27361. [2024-11-18 16:16:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27361 states, 23453 states have (on average 1.412015520402507) internal successors, (33116), 23911 states have internal predecessors, (33116), 2173 states have call successors, (2173), 1318 states have call predecessors, (2173), 1734 states have return successors, (3672), 2147 states have call predecessors, (3672), 2173 states have call successors, (3672) [2024-11-18 16:16:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27361 states to 27361 states and 38961 transitions. [2024-11-18 16:16:43,139 INFO L78 Accepts]: Start accepts. Automaton has 27361 states and 38961 transitions. Word has length 168 [2024-11-18 16:16:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:43,140 INFO L471 AbstractCegarLoop]: Abstraction has 27361 states and 38961 transitions. [2024-11-18 16:16:43,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 16:16:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 27361 states and 38961 transitions. [2024-11-18 16:16:43,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-18 16:16:43,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:43,220 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:43,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 16:16:43,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-18 16:16:43,421 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:43,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1557702922, now seen corresponding path program 1 times [2024-11-18 16:16:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:43,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424041227] [2024-11-18 16:16:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-18 16:16:43,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424041227] [2024-11-18 16:16:43,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424041227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541775875] [2024-11-18 16:16:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:43,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:43,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:43,525 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:43,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 16:16:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:43,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:43,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 16:16:43,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541775875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:43,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:43,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714168238] [2024-11-18 16:16:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:43,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:43,785 INFO L87 Difference]: Start difference. First operand 27361 states and 38961 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 16:16:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:46,157 INFO L93 Difference]: Finished difference Result 58135 states and 83898 transitions. [2024-11-18 16:16:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:46,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 187 [2024-11-18 16:16:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:46,332 INFO L225 Difference]: With dead ends: 58135 [2024-11-18 16:16:46,333 INFO L226 Difference]: Without dead ends: 30795 [2024-11-18 16:16:46,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:46,415 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 150 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:46,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30795 states. [2024-11-18 16:16:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30795 to 30795. [2024-11-18 16:16:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30795 states, 26603 states have (on average 1.379769198962523) internal successors, (36706), 27061 states have internal predecessors, (36706), 2259 states have call successors, (2259), 1516 states have call predecessors, (2259), 1932 states have return successors, (3794), 2233 states have call predecessors, (3794), 2259 states have call successors, (3794) [2024-11-18 16:16:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30795 states to 30795 states and 42759 transitions. [2024-11-18 16:16:48,915 INFO L78 Accepts]: Start accepts. Automaton has 30795 states and 42759 transitions. Word has length 187 [2024-11-18 16:16:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:48,916 INFO L471 AbstractCegarLoop]: Abstraction has 30795 states and 42759 transitions. [2024-11-18 16:16:48,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 16:16:48,916 INFO L276 IsEmpty]: Start isEmpty. Operand 30795 states and 42759 transitions. [2024-11-18 16:16:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-18 16:16:48,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:48,984 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:49,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 16:16:49,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:49,186 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:49,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash 337141016, now seen corresponding path program 1 times [2024-11-18 16:16:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:49,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057364522] [2024-11-18 16:16:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:49,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-18 16:16:49,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:49,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057364522] [2024-11-18 16:16:49,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057364522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:49,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072829322] [2024-11-18 16:16:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:49,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:49,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:49,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:49,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 16:16:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:49,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:49,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 16:16:49,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:49,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072829322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:49,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:49,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647767886] [2024-11-18 16:16:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:49,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:49,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:49,472 INFO L87 Difference]: Start difference. First operand 30795 states and 42759 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 16:16:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:51,458 INFO L93 Difference]: Finished difference Result 54099 states and 74752 transitions. [2024-11-18 16:16:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:51,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 187 [2024-11-18 16:16:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:51,639 INFO L225 Difference]: With dead ends: 54099 [2024-11-18 16:16:51,639 INFO L226 Difference]: Without dead ends: 32951 [2024-11-18 16:16:51,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:51,706 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 161 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:51,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 482 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32951 states. [2024-11-18 16:16:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32951 to 32855. [2024-11-18 16:16:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32855 states, 28479 states have (on average 1.3547526247410373) internal successors, (38582), 28937 states have internal predecessors, (38582), 2311 states have call successors, (2311), 1648 states have call predecessors, (2311), 2064 states have return successors, (3978), 2285 states have call predecessors, (3978), 2311 states have call successors, (3978) [2024-11-18 16:16:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32855 states to 32855 states and 44871 transitions. [2024-11-18 16:16:54,040 INFO L78 Accepts]: Start accepts. Automaton has 32855 states and 44871 transitions. Word has length 187 [2024-11-18 16:16:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:54,041 INFO L471 AbstractCegarLoop]: Abstraction has 32855 states and 44871 transitions. [2024-11-18 16:16:54,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 16:16:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 32855 states and 44871 transitions. [2024-11-18 16:16:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-18 16:16:54,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:54,097 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:54,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:54,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-18 16:16:54,298 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:54,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:54,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1274854342, now seen corresponding path program 1 times [2024-11-18 16:16:54,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865560362] [2024-11-18 16:16:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-18 16:16:54,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865560362] [2024-11-18 16:16:54,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865560362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218283457] [2024-11-18 16:16:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:54,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:54,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:54,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 16:16:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:54,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:54,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 16:16:54,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:54,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218283457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:54,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707245666] [2024-11-18 16:16:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:54,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:54,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:54,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:54,553 INFO L87 Difference]: Start difference. First operand 32855 states and 44871 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 16:16:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:58,406 INFO L93 Difference]: Finished difference Result 93563 states and 129461 transitions. [2024-11-18 16:16:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:58,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 188 [2024-11-18 16:16:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:58,699 INFO L225 Difference]: With dead ends: 93563 [2024-11-18 16:16:58,700 INFO L226 Difference]: Without dead ends: 60729 [2024-11-18 16:16:58,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:58,804 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 179 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:58,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 636 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60729 states. [2024-11-18 16:17:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60729 to 60727. [2024-11-18 16:17:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60727 states, 52425 states have (on average 1.3503481163567002) internal successors, (70792), 53341 states have internal predecessors, (70792), 4397 states have call successors, (4397), 3072 states have call predecessors, (4397), 3904 states have return successors, (8778), 4345 states have call predecessors, (8778), 4397 states have call successors, (8778) [2024-11-18 16:17:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60727 states to 60727 states and 83967 transitions. [2024-11-18 16:17:03,869 INFO L78 Accepts]: Start accepts. Automaton has 60727 states and 83967 transitions. Word has length 188 [2024-11-18 16:17:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:03,870 INFO L471 AbstractCegarLoop]: Abstraction has 60727 states and 83967 transitions. [2024-11-18 16:17:03,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 16:17:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 60727 states and 83967 transitions. [2024-11-18 16:17:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-18 16:17:03,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:03,999 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:04,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 16:17:04,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 16:17:04,201 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:04,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -27291708, now seen corresponding path program 1 times [2024-11-18 16:17:04,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:04,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062701516] [2024-11-18 16:17:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 16:17:04,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:04,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062701516] [2024-11-18 16:17:04,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062701516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:17:04,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441250928] [2024-11-18 16:17:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:17:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:17:04,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:17:04,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 16:17:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:04,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:17:04,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:17:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 16:17:04,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:17:04,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441250928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:04,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:17:04,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:17:04,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961079937] [2024-11-18 16:17:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:04,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:04,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:04,448 INFO L87 Difference]: Start difference. First operand 60727 states and 83967 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11)