./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+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_label49+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 8099d26797381b80337a430cbea65f80d24d8bb2ab20ef5e1337fe6b0f67d890 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:19:41,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:19:41,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:19:41,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:19:41,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:19:41,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:19:41,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:19:41,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:19:41,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:19:41,421 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:19:41,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:19:41,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:19:41,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:19:41,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:19:41,423 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:19:41,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:19:41,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:19:41,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:19:41,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:19:41,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:19:41,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:19:41,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:19:41,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:19:41,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:19:41,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:19:41,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:19:41,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:19:41,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:19:41,428 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:19:41,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:19:41,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:19:41,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:19:41,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:19:41,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:19:41,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:19:41,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:19:41,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:19:41,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:19:41,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:19:41,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:19:41,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:19:41,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:19:41,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8099d26797381b80337a430cbea65f80d24d8bb2ab20ef5e1337fe6b0f67d890 [2024-11-16 09:19:41,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:19:41,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:19:41,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:19:41,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:19:41,771 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:19:41,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c [2024-11-16 09:19:43,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:19:43,736 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:19:43,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c [2024-11-16 09:19:43,796 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f973e87c/b257106fde5244f19dcf2ac39696854f/FLAG6f9f44bec [2024-11-16 09:19:43,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f973e87c/b257106fde5244f19dcf2ac39696854f [2024-11-16 09:19:43,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:19:43,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:19:43,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:19:43,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:19:43,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:19:43,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:19:43" (1/1) ... [2024-11-16 09:19:43,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae36667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:43, skipping insertion in model container [2024-11-16 09:19:43,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:19:43" (1/1) ... [2024-11-16 09:19:44,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:19:45,745 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_label49+token_ring.06.cil-2.c[380593,380606] [2024-11-16 09:19:45,778 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_label49+token_ring.06.cil-2.c[383339,383352] [2024-11-16 09:19:46,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:19:46,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:19:46,724 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_label49+token_ring.06.cil-2.c[380593,380606] [2024-11-16 09:19:46,728 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_label49+token_ring.06.cil-2.c[383339,383352] [2024-11-16 09:19:46,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:19:46,804 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:19:46,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46 WrapperNode [2024-11-16 09:19:46,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:19:46,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:19:46,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:19:46,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:19:46,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:46,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,302 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12863 [2024-11-16 09:19:47,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:19:47,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:19:47,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:19:47,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:19:47,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,561 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 09:19:47,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,685 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:19:47,828 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:19:47,828 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:19:47,828 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:19:47,829 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (1/1) ... [2024-11-16 09:19:47,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:19:47,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:19:47,861 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 09:19:47,863 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 09:19:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:19:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 09:19:47,964 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 09:19:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:19:47,964 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:19:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 09:19:47,964 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 09:19:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 09:19:47,964 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 09:19:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 09:19:47,965 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 09:19:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 09:19:47,965 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 09:19:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:19:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:19:47,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:19:48,117 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:19:48,119 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:19:56,031 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2024-11-16 09:19:56,032 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2024-11-16 09:19:56,032 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2024-11-16 09:19:56,033 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2024-11-16 09:19:56,034 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2024-11-16 09:19:56,034 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2024-11-16 09:19:56,034 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2024-11-16 09:19:56,384 INFO L? ?]: Removed 1719 outVars from TransFormulas that were not future-live. [2024-11-16 09:19:56,384 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:19:56,445 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:19:56,446 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:19:56,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:19:56 BoogieIcfgContainer [2024-11-16 09:19:56,447 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:19:56,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:19:56,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:19:56,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:19:56,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:19:43" (1/3) ... [2024-11-16 09:19:56,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e991bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:19:56, skipping insertion in model container [2024-11-16 09:19:56,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:19:46" (2/3) ... [2024-11-16 09:19:56,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e991bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:19:56, skipping insertion in model container [2024-11-16 09:19:56,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:19:56" (3/3) ... [2024-11-16 09:19:56,457 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.06.cil-2.c [2024-11-16 09:19:56,481 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:19:56,482 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:19:56,618 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:19:56,626 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;@1f93deac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:19:56,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:19:56,643 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 09:19:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:19:56,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:19:56,662 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 09:19:56,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:19:56,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:19:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1552308627, now seen corresponding path program 1 times [2024-11-16 09:19:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:19:56,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858275622] [2024-11-16 09:19:56,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:19:56,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:19:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:57,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:19:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:57,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:19:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:57,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:19:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:57,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:19:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:57,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:19:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:57,466 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 09:19:57,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:19:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858275622] [2024-11-16 09:19:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858275622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:19:57,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:19:57,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:19:57,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686989179] [2024-11-16 09:19:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:19:57,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:19:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:19:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:19:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:19:57,506 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 09:19:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:19:59,388 INFO L93 Difference]: Finished difference Result 5308 states and 9631 transitions. [2024-11-16 09:19:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:19:59,391 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 09:19:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:19:59,423 INFO L225 Difference]: With dead ends: 5308 [2024-11-16 09:19:59,424 INFO L226 Difference]: Without dead ends: 2789 [2024-11-16 09:19:59,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:19:59,442 INFO L432 NwaCegarLoop]: 4260 mSDtfsCounter, 4933 mSDsluCounter, 12806 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:19:59,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 17066 Invalid, 1342 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:19:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2024-11-16 09:19:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2637. [2024-11-16 09:19:59,604 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 09:19:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 4719 transitions. [2024-11-16 09:19:59,619 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 4719 transitions. Word has length 117 [2024-11-16 09:19:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:19:59,620 INFO L471 AbstractCegarLoop]: Abstraction has 2637 states and 4719 transitions. [2024-11-16 09:19:59,620 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 09:19:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 4719 transitions. [2024-11-16 09:19:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:19:59,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:19:59,624 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 09:19:59,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:19:59,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:19:59,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:19:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1986377361, now seen corresponding path program 1 times [2024-11-16 09:19:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:19:59,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007389283] [2024-11-16 09:19:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:19:59,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:19:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:59,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:19:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:59,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:19:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:59,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:19:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:59,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:19:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:59,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:19:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:19:59,897 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 09:19:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:19:59,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007389283] [2024-11-16 09:19:59,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007389283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:19:59,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:19:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:19:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334160005] [2024-11-16 09:19:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:19:59,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:19:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:19:59,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:19:59,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:19:59,904 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 09:20:01,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:01,095 INFO L93 Difference]: Finished difference Result 3298 states and 5733 transitions. [2024-11-16 09:20:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:20:01,095 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 09:20:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:01,110 INFO L225 Difference]: With dead ends: 3298 [2024-11-16 09:20:01,110 INFO L226 Difference]: Without dead ends: 2798 [2024-11-16 09:20:01,113 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 09:20:01,115 INFO L432 NwaCegarLoop]: 4174 mSDtfsCounter, 4726 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:01,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 16589 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 09:20:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2024-11-16 09:20:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2637. [2024-11-16 09:20:01,192 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 09:20:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 4717 transitions. [2024-11-16 09:20:01,204 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 4717 transitions. Word has length 117 [2024-11-16 09:20:01,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:01,206 INFO L471 AbstractCegarLoop]: Abstraction has 2637 states and 4717 transitions. [2024-11-16 09:20:01,206 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 09:20:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 4717 transitions. [2024-11-16 09:20:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:01,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:01,210 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 09:20:01,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:20:01,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:01,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1793069486, now seen corresponding path program 1 times [2024-11-16 09:20:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335771523] [2024-11-16 09:20:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:01,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:01,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:01,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:01,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:01,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:01,452 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 09:20:01,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:01,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335771523] [2024-11-16 09:20:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335771523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:01,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:01,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:01,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896696637] [2024-11-16 09:20:01,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:01,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:01,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:01,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:01,458 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 09:20:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:03,471 INFO L93 Difference]: Finished difference Result 3621 states and 6210 transitions. [2024-11-16 09:20:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:20:03,472 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 09:20:03,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:03,486 INFO L225 Difference]: With dead ends: 3621 [2024-11-16 09:20:03,487 INFO L226 Difference]: Without dead ends: 3121 [2024-11-16 09:20:03,491 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 09:20:03,494 INFO L432 NwaCegarLoop]: 4364 mSDtfsCounter, 4865 mSDsluCounter, 17253 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4878 SdHoareTripleChecker+Valid, 21617 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:03,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4878 Valid, 21617 Invalid, 2044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:20:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2024-11-16 09:20:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 2875. [2024-11-16 09:20:03,575 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 09:20:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5061 transitions. [2024-11-16 09:20:03,585 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5061 transitions. Word has length 117 [2024-11-16 09:20:03,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:03,586 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 5061 transitions. [2024-11-16 09:20:03,586 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 09:20:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5061 transitions. [2024-11-16 09:20:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:03,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:03,590 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 09:20:03,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:20:03,590 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:03,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1548696177, now seen corresponding path program 1 times [2024-11-16 09:20:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751032812] [2024-11-16 09:20:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:03,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:03,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:03,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:03,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:03,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:03,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:03,775 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 09:20:03,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:03,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751032812] [2024-11-16 09:20:03,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751032812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:03,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:03,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:03,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305031064] [2024-11-16 09:20:03,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:03,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:03,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:03,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:03,778 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 09:20:05,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:05,572 INFO L93 Difference]: Finished difference Result 4487 states and 7500 transitions. [2024-11-16 09:20:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:20:05,573 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 09:20:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:05,590 INFO L225 Difference]: With dead ends: 4487 [2024-11-16 09:20:05,590 INFO L226 Difference]: Without dead ends: 3749 [2024-11-16 09:20:05,598 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 09:20:05,599 INFO L432 NwaCegarLoop]: 4362 mSDtfsCounter, 4863 mSDsluCounter, 17253 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:05,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4876 Valid, 21615 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:20:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2024-11-16 09:20:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3353. [2024-11-16 09:20:05,731 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 09:20:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5756 transitions. [2024-11-16 09:20:05,750 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5756 transitions. Word has length 117 [2024-11-16 09:20:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:05,751 INFO L471 AbstractCegarLoop]: Abstraction has 3353 states and 5756 transitions. [2024-11-16 09:20:05,751 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 09:20:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5756 transitions. [2024-11-16 09:20:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:05,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:05,755 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 09:20:05,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:20:05,756 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:05,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1945735566, now seen corresponding path program 1 times [2024-11-16 09:20:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758556414] [2024-11-16 09:20:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:05,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:05,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:05,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:05,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:05,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:05,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:05,960 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 09:20:05,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758556414] [2024-11-16 09:20:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758556414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:05,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752517914] [2024-11-16 09:20:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:05,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:05,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:05,965 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 09:20:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:07,892 INFO L93 Difference]: Finished difference Result 6167 states and 9991 transitions. [2024-11-16 09:20:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:20:07,892 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 09:20:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:07,916 INFO L225 Difference]: With dead ends: 6167 [2024-11-16 09:20:07,916 INFO L226 Difference]: Without dead ends: 4951 [2024-11-16 09:20:07,922 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 09:20:07,924 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, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:07,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 21615 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:20:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2024-11-16 09:20:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4311. [2024-11-16 09:20:08,128 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 09:20:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7154 transitions. [2024-11-16 09:20:08,146 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7154 transitions. Word has length 117 [2024-11-16 09:20:08,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:08,147 INFO L471 AbstractCegarLoop]: Abstraction has 4311 states and 7154 transitions. [2024-11-16 09:20:08,147 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 09:20:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7154 transitions. [2024-11-16 09:20:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:08,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:08,151 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 09:20:08,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:20:08,151 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:08,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:08,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1820866129, now seen corresponding path program 1 times [2024-11-16 09:20:08,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:08,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519858044] [2024-11-16 09:20:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:08,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:08,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:08,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:08,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:08,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:08,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:08,390 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 09:20:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519858044] [2024-11-16 09:20:08,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519858044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:08,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:08,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:08,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533373087] [2024-11-16 09:20:08,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:08,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:08,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:08,394 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 09:20:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:10,308 INFO L93 Difference]: Finished difference Result 9527 states and 14991 transitions. [2024-11-16 09:20:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:20:10,308 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 09:20:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:10,343 INFO L225 Difference]: With dead ends: 9527 [2024-11-16 09:20:10,343 INFO L226 Difference]: Without dead ends: 7353 [2024-11-16 09:20:10,355 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 09:20:10,359 INFO L432 NwaCegarLoop]: 4198 mSDtfsCounter, 4923 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4936 SdHoareTripleChecker+Valid, 20953 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:10,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4936 Valid, 20953 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 09:20:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2024-11-16 09:20:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 6233. [2024-11-16 09:20:10,587 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 09:20:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 9976 transitions. [2024-11-16 09:20:10,603 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 9976 transitions. Word has length 117 [2024-11-16 09:20:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:10,604 INFO L471 AbstractCegarLoop]: Abstraction has 6233 states and 9976 transitions. [2024-11-16 09:20:10,604 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 09:20:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 9976 transitions. [2024-11-16 09:20:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:10,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:10,609 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 09:20:10,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:20:10,609 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:10,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1798408558, now seen corresponding path program 1 times [2024-11-16 09:20:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:10,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44704405] [2024-11-16 09:20:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:10,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:10,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:10,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:10,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:10,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:10,774 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 09:20:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44704405] [2024-11-16 09:20:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44704405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:10,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380162508] [2024-11-16 09:20:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:10,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:10,777 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 09:20:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:12,692 INFO L93 Difference]: Finished difference Result 16247 states and 25051 transitions. [2024-11-16 09:20:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:20:12,693 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 09:20:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:12,737 INFO L225 Difference]: With dead ends: 16247 [2024-11-16 09:20:12,737 INFO L226 Difference]: Without dead ends: 12151 [2024-11-16 09:20:12,755 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 09:20:12,756 INFO L432 NwaCegarLoop]: 4362 mSDtfsCounter, 4851 mSDsluCounter, 17253 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:12,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4864 Valid, 21615 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:20:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2024-11-16 09:20:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 10091. [2024-11-16 09:20:13,239 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 09:20:13,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10091 states to 10091 states and 15694 transitions. [2024-11-16 09:20:13,265 INFO L78 Accepts]: Start accepts. Automaton has 10091 states and 15694 transitions. Word has length 117 [2024-11-16 09:20:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:13,266 INFO L471 AbstractCegarLoop]: Abstraction has 10091 states and 15694 transitions. [2024-11-16 09:20:13,266 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 09:20:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10091 states and 15694 transitions. [2024-11-16 09:20:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:13,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:13,276 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 09:20:13,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:20:13,276 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:13,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:13,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1687071281, now seen corresponding path program 1 times [2024-11-16 09:20:13,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:13,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421489962] [2024-11-16 09:20:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:13,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:13,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:13,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:13,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:13,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:13,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:13,469 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 09:20:13,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:13,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421489962] [2024-11-16 09:20:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421489962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:13,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607243231] [2024-11-16 09:20:13,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:13,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:13,471 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 09:20:15,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:15,959 INFO L93 Difference]: Finished difference Result 32663 states and 49845 transitions. [2024-11-16 09:20:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:20:15,960 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 09:20:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:16,042 INFO L225 Difference]: With dead ends: 32663 [2024-11-16 09:20:16,042 INFO L226 Difference]: Without dead ends: 24709 [2024-11-16 09:20:16,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:20:16,070 INFO L432 NwaCegarLoop]: 4360 mSDtfsCounter, 5099 mSDsluCounter, 17245 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:16,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5119 Valid, 21605 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:20:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24709 states. [2024-11-16 09:20:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24709 to 17741. [2024-11-16 09:20:16,923 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 09:20:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 27208 transitions. [2024-11-16 09:20:16,989 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 27208 transitions. Word has length 117 [2024-11-16 09:20:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:16,990 INFO L471 AbstractCegarLoop]: Abstraction has 17741 states and 27208 transitions. [2024-11-16 09:20:16,990 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 09:20:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 27208 transitions. [2024-11-16 09:20:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:17,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:17,011 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 09:20:17,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:20:17,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:17,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1245316786, now seen corresponding path program 1 times [2024-11-16 09:20:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:17,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328504637] [2024-11-16 09:20:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:17,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:17,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:17,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:17,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:17,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:17,213 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 09:20:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328504637] [2024-11-16 09:20:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328504637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:17,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273083281] [2024-11-16 09:20:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:17,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:17,217 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 09:20:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:18,885 INFO L93 Difference]: Finished difference Result 37407 states and 57693 transitions. [2024-11-16 09:20:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:20:18,885 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 09:20:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:18,962 INFO L225 Difference]: With dead ends: 37407 [2024-11-16 09:20:18,963 INFO L226 Difference]: Without dead ends: 21803 [2024-11-16 09:20:19,012 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 09:20:19,013 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 09:20:19,013 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 09:20:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21803 states. [2024-11-16 09:20:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21803 to 17741. [2024-11-16 09:20:19,864 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 09:20:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 27143 transitions. [2024-11-16 09:20:19,918 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 27143 transitions. Word has length 117 [2024-11-16 09:20:19,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:19,918 INFO L471 AbstractCegarLoop]: Abstraction has 17741 states and 27143 transitions. [2024-11-16 09:20:19,919 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 09:20:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 27143 transitions. [2024-11-16 09:20:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:19,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:19,935 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 09:20:19,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:20:19,935 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:19,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1231066641, now seen corresponding path program 1 times [2024-11-16 09:20:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:19,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947959448] [2024-11-16 09:20:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:19,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:19,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:20,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:20,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:20,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:20,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:20,092 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 09:20:20,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947959448] [2024-11-16 09:20:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947959448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:20,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256506346] [2024-11-16 09:20:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:20,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:20,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:20,094 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 09:20:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:23,289 INFO L93 Difference]: Finished difference Result 60563 states and 92275 transitions. [2024-11-16 09:20:23,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:20:23,290 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 09:20:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:23,431 INFO L225 Difference]: With dead ends: 60563 [2024-11-16 09:20:23,431 INFO L226 Difference]: Without dead ends: 44959 [2024-11-16 09:20:23,470 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 09:20:23,471 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 09:20:23,472 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 09:20:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44959 states. [2024-11-16 09:20:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44959 to 33071. [2024-11-16 09:20:25,437 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 09:20:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 50622 transitions. [2024-11-16 09:20:25,555 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 50622 transitions. Word has length 117 [2024-11-16 09:20:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:25,556 INFO L471 AbstractCegarLoop]: Abstraction has 33071 states and 50622 transitions. [2024-11-16 09:20:25,556 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 09:20:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 50622 transitions. [2024-11-16 09:20:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:25,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:25,586 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 09:20:25,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:20:25,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:25,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:25,587 INFO L85 PathProgramCache]: Analyzing trace with hash 260775634, now seen corresponding path program 1 times [2024-11-16 09:20:25,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:25,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559669595] [2024-11-16 09:20:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:25,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:25,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:25,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:25,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:25,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:25,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:25,753 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 09:20:25,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559669595] [2024-11-16 09:20:25,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559669595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:25,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:25,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:25,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683779102] [2024-11-16 09:20:25,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:25,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:25,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:25,755 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 09:20:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:27,944 INFO L93 Difference]: Finished difference Result 71581 states and 111311 transitions. [2024-11-16 09:20:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:20:27,944 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 09:20:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:28,081 INFO L225 Difference]: With dead ends: 71581 [2024-11-16 09:20:28,081 INFO L226 Difference]: Without dead ends: 40647 [2024-11-16 09:20:28,142 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 09:20:28,144 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 09:20:28,144 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 09:20:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40647 states. [2024-11-16 09:20:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40647 to 33071. [2024-11-16 09:20:29,732 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 09:20:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 50493 transitions. [2024-11-16 09:20:29,818 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 50493 transitions. Word has length 117 [2024-11-16 09:20:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:29,819 INFO L471 AbstractCegarLoop]: Abstraction has 33071 states and 50493 transitions. [2024-11-16 09:20:29,819 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 09:20:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 50493 transitions. [2024-11-16 09:20:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:29,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:29,851 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 09:20:29,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:20:29,851 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:29,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1199307249, now seen corresponding path program 1 times [2024-11-16 09:20:29,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:29,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716267956] [2024-11-16 09:20:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:29,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:29,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:29,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:29,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:29,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:30,000 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 09:20:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716267956] [2024-11-16 09:20:30,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716267956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:30,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:30,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113057617] [2024-11-16 09:20:30,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:30,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:30,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:30,002 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 09:20:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:33,077 INFO L93 Difference]: Finished difference Result 71450 states and 110663 transitions. [2024-11-16 09:20:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:20:33,078 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 09:20:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:33,218 INFO L225 Difference]: With dead ends: 71450 [2024-11-16 09:20:33,219 INFO L226 Difference]: Without dead ends: 40516 [2024-11-16 09:20:33,283 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 09:20:33,285 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4728 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:33,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4742 Valid, 16586 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:20:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40516 states. [2024-11-16 09:20:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40516 to 33071. [2024-11-16 09:20:35,358 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 09:20:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 50364 transitions. [2024-11-16 09:20:35,445 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 50364 transitions. Word has length 117 [2024-11-16 09:20:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:35,446 INFO L471 AbstractCegarLoop]: Abstraction has 33071 states and 50364 transitions. [2024-11-16 09:20:35,446 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 09:20:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 50364 transitions. [2024-11-16 09:20:35,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:35,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:35,473 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 09:20:35,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:20:35,474 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:35,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:35,474 INFO L85 PathProgramCache]: Analyzing trace with hash 813940466, now seen corresponding path program 1 times [2024-11-16 09:20:35,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:35,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476482238] [2024-11-16 09:20:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:35,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:35,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:35,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:35,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:35,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:35,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:35,630 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 09:20:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476482238] [2024-11-16 09:20:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476482238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23688149] [2024-11-16 09:20:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:35,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:35,632 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 09:20:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:20:41,325 INFO L93 Difference]: Finished difference Result 112169 states and 171814 transitions. [2024-11-16 09:20:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:20:41,325 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 09:20:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:20:41,557 INFO L225 Difference]: With dead ends: 112169 [2024-11-16 09:20:41,558 INFO L226 Difference]: Without dead ends: 81235 [2024-11-16 09:20:41,639 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 09:20:41,640 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, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:20:41,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4892 Valid, 21605 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 09:20:41,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81235 states. [2024-11-16 09:20:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81235 to 63919. [2024-11-16 09:20:45,352 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 09:20:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63919 states to 63919 states and 98710 transitions. [2024-11-16 09:20:45,512 INFO L78 Accepts]: Start accepts. Automaton has 63919 states and 98710 transitions. Word has length 117 [2024-11-16 09:20:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:20:45,513 INFO L471 AbstractCegarLoop]: Abstraction has 63919 states and 98710 transitions. [2024-11-16 09:20:45,513 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 09:20:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 63919 states and 98710 transitions. [2024-11-16 09:20:45,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 09:20:45,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:20:45,554 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 09:20:45,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:20:45,554 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:20:45,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:20:45,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1830890031, now seen corresponding path program 1 times [2024-11-16 09:20:45,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:20:45,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730507383] [2024-11-16 09:20:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:20:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:20:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:45,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:20:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:45,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:20:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:45,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:20:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:45,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:20:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:45,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:20:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:20:45,689 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 09:20:45,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:20:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730507383] [2024-11-16 09:20:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730507383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:20:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:20:45,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:20:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457785076] [2024-11-16 09:20:45,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:20:45,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:20:45,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:20:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:20:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:20:45,691 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)