./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/Problem05_label45+token_ring.06.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 54f526c05851bf34c26c8de127e86052a91be3d9e5ccf7068c1070e69b950b3c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:12:28,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:12:28,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:12:28,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:12:28,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:12:28,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:12:28,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:12:28,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:12:28,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:12:28,834 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:12:28,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:12:28,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:12:28,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:12:28,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:12:28,839 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:12:28,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:12:28,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:12:28,840 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:12:28,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:12:28,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:12:28,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:12:28,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:12:28,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:12:28,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:12:28,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:12:28,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:12:28,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:12:28,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:12:28,843 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:12:28,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:12:28,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:12:28,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:12:28,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:12:28,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:12:28,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:12:28,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:12:28,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:12:28,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:12:28,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:12:28,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:12:28,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:12:28,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:12:28,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54f526c05851bf34c26c8de127e86052a91be3d9e5ccf7068c1070e69b950b3c [2024-11-16 09:12:29,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:12:29,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:12:29,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:12:29,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:12:29,143 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:12:29,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c [2024-11-16 09:12:30,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:12:31,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:12:31,217 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c [2024-11-16 09:12:31,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7faa45e44/fbac0cf1a989484fb5cdb19b1b3b3888/FLAG4d1a99717 [2024-11-16 09:12:31,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7faa45e44/fbac0cf1a989484fb5cdb19b1b3b3888 [2024-11-16 09:12:31,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:12:31,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:12:31,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:12:31,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:12:31,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:12:31,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:12:31" (1/1) ... [2024-11-16 09:12:31,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b0d269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:31, skipping insertion in model container [2024-11-16 09:12:31,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:12:31" (1/1) ... [2024-11-16 09:12:31,493 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:12:33,271 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/Problem05_label45+token_ring.06.cil-2.c[380323,380336] [2024-11-16 09:12:33,304 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/Problem05_label45+token_ring.06.cil-2.c[383339,383352] [2024-11-16 09:12:33,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:12:33,599 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:12:34,380 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/Problem05_label45+token_ring.06.cil-2.c[380323,380336] [2024-11-16 09:12:34,388 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/Problem05_label45+token_ring.06.cil-2.c[383339,383352] [2024-11-16 09:12:34,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:12:34,478 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:12:34,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34 WrapperNode [2024-11-16 09:12:34,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:12:34,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:12:34,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:12:34,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:12:34,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:34,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:34,965 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12863 [2024-11-16 09:12:34,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:12:34,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:12:34,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:12:34,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:12:34,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:34,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,123 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]. [2024-11-16 09:12:35,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,364 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:12:35,579 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:12:35,579 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:12:35,580 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:12:35,581 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (1/1) ... [2024-11-16 09:12:35,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:12:35,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:12:35,616 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) [2024-11-16 09:12:35,619 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 [2024-11-16 09:12:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:12:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 09:12:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 09:12:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:12:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:12:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 09:12:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 09:12:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 09:12:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 09:12:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 09:12:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 09:12:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 09:12:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 09:12:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:12:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:12:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:12:35,797 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:12:35,800 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:12:43,136 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2024-11-16 09:12:43,137 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2024-11-16 09:12:43,137 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2024-11-16 09:12:43,137 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2024-11-16 09:12:43,137 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2024-11-16 09:12:43,138 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2024-11-16 09:12:43,138 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2024-11-16 09:12:43,569 INFO L? ?]: Removed 1719 outVars from TransFormulas that were not future-live. [2024-11-16 09:12:43,569 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:12:43,620 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:12:43,621 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:12:43,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:12:43 BoogieIcfgContainer [2024-11-16 09:12:43,622 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:12:43,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:12:43,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:12:43,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:12:43,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:12:31" (1/3) ... [2024-11-16 09:12:43,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad60ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:12:43, skipping insertion in model container [2024-11-16 09:12:43,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:12:34" (2/3) ... [2024-11-16 09:12:43,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad60ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:12:43, skipping insertion in model container [2024-11-16 09:12:43,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:12:43" (3/3) ... [2024-11-16 09:12:43,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.06.cil-2.c [2024-11-16 09:12:43,646 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:12:43,646 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:12:43,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:12:43,773 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;@106909b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:12:43,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:12:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 2461 states, 2432 states have (on average 1.8351151315789473) internal successors, (4463), 2435 states have internal predecessors, (4463), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-16 09:12:43,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:12:43,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:12:43,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:12:43,806 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:12:43,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:12:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1552308627, now seen corresponding path program 1 times [2024-11-16 09:12:43,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:12:43,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792348065] [2024-11-16 09:12:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:12:43,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:12:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:44,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:12:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:44,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:12:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:44,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:12:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:44,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:12:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:44,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:12:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:12:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:12:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792348065] [2024-11-16 09:12:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792348065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:12:44,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:12:44,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:12:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600816913] [2024-11-16 09:12:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:12:44,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:12:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:12:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:12:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:12:44,551 INFO L87 Difference]: Start difference. First operand has 2461 states, 2432 states have (on average 1.8351151315789473) internal successors, (4463), 2435 states have internal predecessors, (4463), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:12:46,379 INFO L93 Difference]: Finished difference Result 5308 states and 9631 transitions. [2024-11-16 09:12:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:12:46,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:12:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:12:46,414 INFO L225 Difference]: With dead ends: 5308 [2024-11-16 09:12:46,415 INFO L226 Difference]: Without dead ends: 2789 [2024-11-16 09:12:46,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:12:46,431 INFO L432 NwaCegarLoop]: 4260 mSDtfsCounter, 4933 mSDsluCounter, 12806 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 17066 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:12:46,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 17066 Invalid, 1342 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:12:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2024-11-16 09:12:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2637. [2024-11-16 09:12:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2587 states have (on average 1.7959025898724392) internal successors, (4646), 2590 states have internal predecessors, (4646), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2024-11-16 09:12:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 4719 transitions. [2024-11-16 09:12:46,590 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 4719 transitions. Word has length 117 [2024-11-16 09:12:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:12:46,591 INFO L471 AbstractCegarLoop]: Abstraction has 2637 states and 4719 transitions. [2024-11-16 09:12:46,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 4719 transitions. [2024-11-16 09:12:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:12:46,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:12:46,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:12:46,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:12:46,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:12:46,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:12:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1986377361, now seen corresponding path program 1 times [2024-11-16 09:12:46,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:12:46,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779784629] [2024-11-16 09:12:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:12:46,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:12:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:46,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:12:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:46,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:12:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:46,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:12:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:46,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:12:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:46,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:12:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:12:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:12:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779784629] [2024-11-16 09:12:46,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779784629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:12:46,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:12:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:12:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911403418] [2024-11-16 09:12:46,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:12:46,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:12:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:12:46,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:12:46,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:12:46,874 INFO L87 Difference]: Start difference. First operand 2637 states and 4719 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:48,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:12:48,055 INFO L93 Difference]: Finished difference Result 3298 states and 5733 transitions. [2024-11-16 09:12:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:12:48,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:12:48,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:12:48,070 INFO L225 Difference]: With dead ends: 3298 [2024-11-16 09:12:48,071 INFO L226 Difference]: Without dead ends: 2798 [2024-11-16 09:12:48,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:12:48,075 INFO L432 NwaCegarLoop]: 4174 mSDtfsCounter, 4726 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 16589 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:12:48,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 16589 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:12:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2024-11-16 09:12:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2637. [2024-11-16 09:12:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2587 states have (on average 1.795129493621956) internal successors, (4644), 2590 states have internal predecessors, (4644), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2024-11-16 09:12:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 4717 transitions. [2024-11-16 09:12:48,165 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 4717 transitions. Word has length 117 [2024-11-16 09:12:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:12:48,166 INFO L471 AbstractCegarLoop]: Abstraction has 2637 states and 4717 transitions. [2024-11-16 09:12:48,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 4717 transitions. [2024-11-16 09:12:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:12:48,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:12:48,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:12:48,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:12:48,172 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:12:48,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:12:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1793069486, now seen corresponding path program 1 times [2024-11-16 09:12:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:12:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587336854] [2024-11-16 09:12:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:12:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:12:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:48,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:12:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:48,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:12:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:48,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:12:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:48,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:12:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:48,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:12:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:12:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:12:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587336854] [2024-11-16 09:12:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587336854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:12:48,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:12:48,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:12:48,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650952613] [2024-11-16 09:12:48,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:12:48,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:12:48,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:12:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:12:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:12:48,434 INFO L87 Difference]: Start difference. First operand 2637 states and 4717 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:12:50,616 INFO L93 Difference]: Finished difference Result 3621 states and 6210 transitions. [2024-11-16 09:12:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:12:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:12:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:12:50,634 INFO L225 Difference]: With dead ends: 3621 [2024-11-16 09:12:50,634 INFO L226 Difference]: Without dead ends: 3121 [2024-11-16 09:12:50,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:12:50,641 INFO L432 NwaCegarLoop]: 4364 mSDtfsCounter, 4865 mSDsluCounter, 17253 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4878 SdHoareTripleChecker+Valid, 21617 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:12:50,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4878 Valid, 21617 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 09:12:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2024-11-16 09:12:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 2875. [2024-11-16 09:12:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2803 states have (on average 1.768105601141634) internal successors, (4956), 2807 states have internal predecessors, (4956), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2024-11-16 09:12:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5061 transitions. [2024-11-16 09:12:50,747 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5061 transitions. Word has length 117 [2024-11-16 09:12:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:12:50,747 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 5061 transitions. [2024-11-16 09:12:50,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5061 transitions. [2024-11-16 09:12:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:12:50,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:12:50,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:12:50,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:12:50,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:12:50,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:12:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1548696177, now seen corresponding path program 1 times [2024-11-16 09:12:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:12:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184046204] [2024-11-16 09:12:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:12:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:12:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:50,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:12:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:50,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:12:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:50,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:12:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:50,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:12:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:50,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:12:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:12:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:12:50,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184046204] [2024-11-16 09:12:50,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184046204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:12:50,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:12:50,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:12:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155743731] [2024-11-16 09:12:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:12:50,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:12:50,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:12:50,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:12:50,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:12:50,960 INFO L87 Difference]: Start difference. First operand 2875 states and 5061 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:12:52,939 INFO L93 Difference]: Finished difference Result 4487 states and 7500 transitions. [2024-11-16 09:12:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:12:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:12:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:12:52,963 INFO L225 Difference]: With dead ends: 4487 [2024-11-16 09:12:52,964 INFO L226 Difference]: Without dead ends: 3749 [2024-11-16 09:12:52,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:12:52,969 INFO L432 NwaCegarLoop]: 4362 mSDtfsCounter, 4863 mSDsluCounter, 17253 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:12:52,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4876 Valid, 21615 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:12:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2024-11-16 09:12:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3353. [2024-11-16 09:12:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3237 states have (on average 1.7247451343836886) internal successors, (5583), 3243 states have internal predecessors, (5583), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2024-11-16 09:12:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5756 transitions. [2024-11-16 09:12:53,105 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5756 transitions. Word has length 117 [2024-11-16 09:12:53,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:12:53,108 INFO L471 AbstractCegarLoop]: Abstraction has 3353 states and 5756 transitions. [2024-11-16 09:12:53,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5756 transitions. [2024-11-16 09:12:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:12:53,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:12:53,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:12:53,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:12:53,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:12:53,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:12:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1945735566, now seen corresponding path program 1 times [2024-11-16 09:12:53,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:12:53,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843947178] [2024-11-16 09:12:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:12:53,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:12:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:53,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:12:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:53,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:12:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:53,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:12:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:53,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:12:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:53,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:12:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:12:53,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:12:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843947178] [2024-11-16 09:12:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843947178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:12:53,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:12:53,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:12:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824321237] [2024-11-16 09:12:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:12:53,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:12:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:12:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:12:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:12:53,315 INFO L87 Difference]: Start difference. First operand 3353 states and 5756 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:12:55,245 INFO L93 Difference]: Finished difference Result 6167 states and 9991 transitions. [2024-11-16 09:12:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:12:55,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:12:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:12:55,269 INFO L225 Difference]: With dead ends: 6167 [2024-11-16 09:12:55,270 INFO L226 Difference]: Without dead ends: 4951 [2024-11-16 09:12:55,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:12:55,277 INFO L432 NwaCegarLoop]: 4362 mSDtfsCounter, 4859 mSDsluCounter, 17253 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:12:55,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 21615 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:12:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2024-11-16 09:12:55,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4311. [2024-11-16 09:12:55,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4107 states have (on average 1.6652057462868273) internal successors, (6839), 4117 states have internal predecessors, (6839), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2024-11-16 09:12:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7154 transitions. [2024-11-16 09:12:55,580 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7154 transitions. Word has length 117 [2024-11-16 09:12:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:12:55,581 INFO L471 AbstractCegarLoop]: Abstraction has 4311 states and 7154 transitions. [2024-11-16 09:12:55,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7154 transitions. [2024-11-16 09:12:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:12:55,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:12:55,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:12:55,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:12:55,585 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:12:55,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:12:55,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1820866129, now seen corresponding path program 1 times [2024-11-16 09:12:55,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:12:55,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247719986] [2024-11-16 09:12:55,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:12:55,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:12:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:55,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:12:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:55,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:12:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:55,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:12:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:55,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:12:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:55,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:12:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:12:55,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:12:55,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247719986] [2024-11-16 09:12:55,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247719986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:12:55,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:12:55,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:12:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351426778] [2024-11-16 09:12:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:12:55,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:12:55,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:12:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:12:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:12:55,815 INFO L87 Difference]: Start difference. First operand 4311 states and 7154 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:12:57,826 INFO L93 Difference]: Finished difference Result 9527 states and 14991 transitions. [2024-11-16 09:12:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:12:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:12:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:12:57,874 INFO L225 Difference]: With dead ends: 9527 [2024-11-16 09:12:57,874 INFO L226 Difference]: Without dead ends: 7353 [2024-11-16 09:12:57,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:12:57,892 INFO L432 NwaCegarLoop]: 4198 mSDtfsCounter, 4923 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4936 SdHoareTripleChecker+Valid, 20953 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:12:57,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4936 Valid, 20953 Invalid, 1743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:12:57,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2024-11-16 09:12:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 6233. [2024-11-16 09:12:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6233 states, 5853 states have (on average 1.599009055185375) internal successors, (9359), 5871 states have internal predecessors, (9359), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2024-11-16 09:12:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 9976 transitions. [2024-11-16 09:12:58,369 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 9976 transitions. Word has length 117 [2024-11-16 09:12:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:12:58,370 INFO L471 AbstractCegarLoop]: Abstraction has 6233 states and 9976 transitions. [2024-11-16 09:12:58,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:12:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 9976 transitions. [2024-11-16 09:12:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:12:58,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:12:58,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:12:58,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:12:58,375 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:12:58,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:12:58,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1798408558, now seen corresponding path program 1 times [2024-11-16 09:12:58,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:12:58,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14937755] [2024-11-16 09:12:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:12:58,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:12:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:58,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:12:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:58,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:12:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:58,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:12:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:58,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:12:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:58,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:12:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:12:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:12:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:12:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14937755] [2024-11-16 09:12:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14937755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:12:58,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:12:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:12:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902734919] [2024-11-16 09:12:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:12:58,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:12:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:12:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:12:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:12:58,540 INFO L87 Difference]: Start difference. First operand 6233 states and 9976 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:13:00,410 INFO L93 Difference]: Finished difference Result 16247 states and 25051 transitions. [2024-11-16 09:13:00,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:13:00,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:13:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:13:00,456 INFO L225 Difference]: With dead ends: 16247 [2024-11-16 09:13:00,456 INFO L226 Difference]: Without dead ends: 12151 [2024-11-16 09:13:00,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:13:00,475 INFO L432 NwaCegarLoop]: 4362 mSDtfsCounter, 4851 mSDsluCounter, 17253 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4864 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:13:00,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4864 Valid, 21615 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 09:13:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2024-11-16 09:13:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 10091. [2024-11-16 09:13:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10091 states, 9359 states have (on average 1.5406560529971152) internal successors, (14419), 9393 states have internal predecessors, (14419), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2024-11-16 09:13:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10091 states to 10091 states and 15694 transitions. [2024-11-16 09:13:00,943 INFO L78 Accepts]: Start accepts. Automaton has 10091 states and 15694 transitions. Word has length 117 [2024-11-16 09:13:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:13:00,943 INFO L471 AbstractCegarLoop]: Abstraction has 10091 states and 15694 transitions. [2024-11-16 09:13:00,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10091 states and 15694 transitions. [2024-11-16 09:13:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:13:00,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:13:00,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:13:00,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:13:00,953 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:13:00,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:13:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1687071281, now seen corresponding path program 1 times [2024-11-16 09:13:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:13:00,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279278570] [2024-11-16 09:13:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:13:00,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:13:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:01,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:13:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:01,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:13:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:01,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:13:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:01,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:13:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:01,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:13:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:13:01,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:13:01,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279278570] [2024-11-16 09:13:01,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279278570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:13:01,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:13:01,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:13:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876242886] [2024-11-16 09:13:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:13:01,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:13:01,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:13:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:13:01,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:13:01,130 INFO L87 Difference]: Start difference. First operand 10091 states and 15694 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:13:03,634 INFO L93 Difference]: Finished difference Result 32663 states and 49845 transitions. [2024-11-16 09:13:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:13:03,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:13:03,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:13:03,720 INFO L225 Difference]: With dead ends: 32663 [2024-11-16 09:13:03,720 INFO L226 Difference]: Without dead ends: 24709 [2024-11-16 09:13:03,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:13:03,756 INFO L432 NwaCegarLoop]: 4360 mSDtfsCounter, 5099 mSDsluCounter, 17245 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5119 SdHoareTripleChecker+Valid, 21605 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:13:03,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5119 Valid, 21605 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:13:03,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24709 states. [2024-11-16 09:13:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24709 to 17741. [2024-11-16 09:13:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17741 states, 16337 states have (on average 1.5008263451062007) internal successors, (24519), 16403 states have internal predecessors, (24519), 948 states have call successors, (948), 390 states have call predecessors, (948), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2024-11-16 09:13:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 27208 transitions. [2024-11-16 09:13:04,809 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 27208 transitions. Word has length 117 [2024-11-16 09:13:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:13:04,810 INFO L471 AbstractCegarLoop]: Abstraction has 17741 states and 27208 transitions. [2024-11-16 09:13:04,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:04,811 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 27208 transitions. [2024-11-16 09:13:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:13:04,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:13:04,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:13:04,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:13:04,830 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:13:04,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:13:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1245316786, now seen corresponding path program 1 times [2024-11-16 09:13:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:13:04,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882923806] [2024-11-16 09:13:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:13:04,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:13:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:04,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:13:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:04,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:13:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:05,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:13:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:05,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:13:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:05,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:13:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:13:05,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:13:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882923806] [2024-11-16 09:13:05,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882923806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:13:05,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:13:05,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:13:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2629005] [2024-11-16 09:13:05,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:13:05,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:13:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:13:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:13:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:13:05,028 INFO L87 Difference]: Start difference. First operand 17741 states and 27208 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:13:06,686 INFO L93 Difference]: Finished difference Result 37407 states and 57693 transitions. [2024-11-16 09:13:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:13:06,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:13:06,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:13:06,770 INFO L225 Difference]: With dead ends: 37407 [2024-11-16 09:13:06,771 INFO L226 Difference]: Without dead ends: 21803 [2024-11-16 09:13:06,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:13:06,826 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4731 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4745 SdHoareTripleChecker+Valid, 16586 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:13:06,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4745 Valid, 16586 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:13:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21803 states. [2024-11-16 09:13:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21803 to 17741. [2024-11-16 09:13:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17741 states, 16337 states have (on average 1.496847646446716) internal successors, (24454), 16403 states have internal predecessors, (24454), 948 states have call successors, (948), 390 states have call predecessors, (948), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2024-11-16 09:13:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 27143 transitions. [2024-11-16 09:13:07,768 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 27143 transitions. Word has length 117 [2024-11-16 09:13:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:13:07,769 INFO L471 AbstractCegarLoop]: Abstraction has 17741 states and 27143 transitions. [2024-11-16 09:13:07,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 27143 transitions. [2024-11-16 09:13:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:13:07,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:13:07,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:13:07,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:13:07,785 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:13:07,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:13:07,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1231066641, now seen corresponding path program 1 times [2024-11-16 09:13:07,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:13:07,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715816458] [2024-11-16 09:13:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:13:07,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:13:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:07,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:13:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:07,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:13:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:07,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:13:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:07,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:13:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:07,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:13:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:13:07,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:13:07,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715816458] [2024-11-16 09:13:07,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715816458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:13:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:13:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:13:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555316970] [2024-11-16 09:13:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:13:07,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:13:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:13:07,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:13:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:13:07,950 INFO L87 Difference]: Start difference. First operand 17741 states and 27143 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:13:11,142 INFO L93 Difference]: Finished difference Result 60563 states and 92275 transitions. [2024-11-16 09:13:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:13:11,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:13:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:13:11,305 INFO L225 Difference]: With dead ends: 60563 [2024-11-16 09:13:11,306 INFO L226 Difference]: Without dead ends: 44959 [2024-11-16 09:13:11,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:13:11,355 INFO L432 NwaCegarLoop]: 4360 mSDtfsCounter, 5009 mSDsluCounter, 17245 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 21605 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:13:11,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 21605 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:13:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44959 states. [2024-11-16 09:13:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44959 to 33071. [2024-11-16 09:13:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33071 states, 30355 states have (on average 1.4720144951408334) internal successors, (44683), 30485 states have internal predecessors, (44683), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2024-11-16 09:13:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 50622 transitions. [2024-11-16 09:13:13,291 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 50622 transitions. Word has length 117 [2024-11-16 09:13:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:13:13,292 INFO L471 AbstractCegarLoop]: Abstraction has 33071 states and 50622 transitions. [2024-11-16 09:13:13,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 50622 transitions. [2024-11-16 09:13:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:13:13,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:13:13,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:13:13,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:13:13,328 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:13:13,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:13:13,329 INFO L85 PathProgramCache]: Analyzing trace with hash 260775634, now seen corresponding path program 1 times [2024-11-16 09:13:13,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:13:13,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970366528] [2024-11-16 09:13:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:13:13,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:13:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:13,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:13:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:13,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:13:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:13,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:13:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:13,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:13:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:13,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:13:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:13:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:13:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970366528] [2024-11-16 09:13:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970366528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:13:13,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:13:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:13:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127617712] [2024-11-16 09:13:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:13:13,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:13:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:13:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:13:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:13:13,514 INFO L87 Difference]: Start difference. First operand 33071 states and 50622 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:13:15,590 INFO L93 Difference]: Finished difference Result 71581 states and 111311 transitions. [2024-11-16 09:13:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:13:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:13:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:13:15,750 INFO L225 Difference]: With dead ends: 71581 [2024-11-16 09:13:15,750 INFO L226 Difference]: Without dead ends: 40647 [2024-11-16 09:13:15,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:13:15,833 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4730 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4744 SdHoareTripleChecker+Valid, 16586 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:13:15,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4744 Valid, 16586 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:13:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40647 states. [2024-11-16 09:13:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40647 to 33071. [2024-11-16 09:13:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33071 states, 30355 states have (on average 1.467764783396475) internal successors, (44554), 30485 states have internal predecessors, (44554), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2024-11-16 09:13:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 50493 transitions. [2024-11-16 09:13:17,846 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 50493 transitions. Word has length 117 [2024-11-16 09:13:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:13:17,846 INFO L471 AbstractCegarLoop]: Abstraction has 33071 states and 50493 transitions. [2024-11-16 09:13:17,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 50493 transitions. [2024-11-16 09:13:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:13:17,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:13:17,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:13:17,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:13:17,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:13:17,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:13:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1199307249, now seen corresponding path program 1 times [2024-11-16 09:13:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:13:17,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967181660] [2024-11-16 09:13:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:13:17,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:13:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:17,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:13:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:17,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:13:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:18,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:13:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:18,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:13:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:18,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:13:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:13:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:13:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967181660] [2024-11-16 09:13:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967181660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:13:18,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:13:18,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:13:18,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78068728] [2024-11-16 09:13:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:13:18,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:13:18,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:13:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:13:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:13:18,027 INFO L87 Difference]: Start difference. First operand 33071 states and 50493 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:13:20,950 INFO L93 Difference]: Finished difference Result 71450 states and 110663 transitions. [2024-11-16 09:13:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:13:20,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:13:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:13:21,086 INFO L225 Difference]: With dead ends: 71450 [2024-11-16 09:13:21,086 INFO L226 Difference]: Without dead ends: 40516 [2024-11-16 09:13:21,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:13:21,160 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4728 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4742 SdHoareTripleChecker+Valid, 16586 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:13:21,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4742 Valid, 16586 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:13:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40516 states. [2024-11-16 09:13:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40516 to 33071. [2024-11-16 09:13:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33071 states, 30355 states have (on average 1.4635150716521166) internal successors, (44425), 30485 states have internal predecessors, (44425), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2024-11-16 09:13:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 50364 transitions. [2024-11-16 09:13:23,287 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 50364 transitions. Word has length 117 [2024-11-16 09:13:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:13:23,287 INFO L471 AbstractCegarLoop]: Abstraction has 33071 states and 50364 transitions. [2024-11-16 09:13:23,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 50364 transitions. [2024-11-16 09:13:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:13:23,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:13:23,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:13:23,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:13:23,313 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:13:23,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:13:23,313 INFO L85 PathProgramCache]: Analyzing trace with hash 813940466, now seen corresponding path program 1 times [2024-11-16 09:13:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:13:23,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539790951] [2024-11-16 09:13:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:13:23,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:13:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:23,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:13:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:23,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:13:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:23,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:13:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:23,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:13:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:23,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:13:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:13:23,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:13:23,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539790951] [2024-11-16 09:13:23,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539790951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:13:23,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:13:23,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:13:23,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167939633] [2024-11-16 09:13:23,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:13:23,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:13:23,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:13:23,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:13:23,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:13:23,471 INFO L87 Difference]: Start difference. First operand 33071 states and 50364 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:13:29,015 INFO L93 Difference]: Finished difference Result 112169 states and 171814 transitions. [2024-11-16 09:13:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:13:29,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 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 117 [2024-11-16 09:13:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:13:29,507 INFO L225 Difference]: With dead ends: 112169 [2024-11-16 09:13:29,508 INFO L226 Difference]: Without dead ends: 81235 [2024-11-16 09:13:29,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:13:29,605 INFO L432 NwaCegarLoop]: 4360 mSDtfsCounter, 4872 mSDsluCounter, 17245 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4892 SdHoareTripleChecker+Valid, 21605 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:13:29,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4892 Valid, 21605 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 09:13:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81235 states. [2024-11-16 09:13:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81235 to 63919. [2024-11-16 09:13:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63919 states, 58643 states have (on average 1.448442269324557) internal successors, (84941), 58901 states have internal predecessors, (84941), 3476 states have call successors, (3476), 1542 states have call predecessors, (3476), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2024-11-16 09:13:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63919 states to 63919 states and 98710 transitions. [2024-11-16 09:13:33,585 INFO L78 Accepts]: Start accepts. Automaton has 63919 states and 98710 transitions. Word has length 117 [2024-11-16 09:13:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:13:33,585 INFO L471 AbstractCegarLoop]: Abstraction has 63919 states and 98710 transitions. [2024-11-16 09:13:33,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:13:33,585 INFO L276 IsEmpty]: Start isEmpty. Operand 63919 states and 98710 transitions. [2024-11-16 09:13:33,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:13:33,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:13:33,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:13:33,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:13:33,630 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:13:33,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:13:33,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1830890031, now seen corresponding path program 1 times [2024-11-16 09:13:33,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:13:33,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084529053] [2024-11-16 09:13:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:13:33,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:13:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:33,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:13:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:33,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:13:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:33,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:13:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:33,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:13:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:33,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:13:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:13:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:13:33,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:13:33,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084529053] [2024-11-16 09:13:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084529053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:13:33,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:13:33,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:13:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045785596] [2024-11-16 09:13:33,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:13:33,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:13:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:13:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:13:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:13:33,807 INFO L87 Difference]: Start difference. First operand 63919 states and 98710 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)