./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.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_label43+token_ring.02.cil-1.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 c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:08:10,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:08:10,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:08:10,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:08:10,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:08:10,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:08:10,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:08:10,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:08:10,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:08:10,895 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:08:10,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:08:10,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:08:10,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:08:10,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:08:10,899 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:08:10,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:08:10,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:08:10,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:08:10,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:08:10,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:08:10,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:08:10,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:08:10,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:08:10,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:08:10,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:08:10,905 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:08:10,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:08:10,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:08:10,906 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:08:10,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:08:10,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:08:10,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:08:10,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:08:10,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:08:10,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:08:10,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:08:10,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:08:10,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:08:10,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:08:10,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:08:10,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:08:10,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:08:10,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c [2024-11-16 09:08:11,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:08:11,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:08:11,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:08:11,208 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:08:11,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:08:11,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2024-11-16 09:08:12,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:08:13,282 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:08:13,283 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2024-11-16 09:08:13,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3683c4f/3fb08dd29f944c53b2a845dd9cb6c7ed/FLAGe1b416e30 [2024-11-16 09:08:13,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3683c4f/3fb08dd29f944c53b2a845dd9cb6c7ed [2024-11-16 09:08:13,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:08:13,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:08:13,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:08:13,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:08:13,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:08:13,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:08:13" (1/1) ... [2024-11-16 09:08:13,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e409cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:13, skipping insertion in model container [2024-11-16 09:08:13,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:08:13" (1/1) ... [2024-11-16 09:08:13,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:08:15,181 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_label43+token_ring.02.cil-1.c[381679,381692] [2024-11-16 09:08:15,211 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_label43+token_ring.02.cil-1.c[383339,383352] [2024-11-16 09:08:15,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:08:15,390 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:08:16,178 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_label43+token_ring.02.cil-1.c[381679,381692] [2024-11-16 09:08:16,185 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_label43+token_ring.02.cil-1.c[383339,383352] [2024-11-16 09:08:16,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:08:16,317 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:08:16,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16 WrapperNode [2024-11-16 09:08:16,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:08:16,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:08:16,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:08:16,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:08:16,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:16,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:16,703 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12627 [2024-11-16 09:08:16,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:08:16,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:08:16,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:08:16,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:08:16,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:16,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:16,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:16,882 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 09:08:16,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:16,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:17,216 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:17,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:17,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:17,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:17,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:08:17,362 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:08:17,362 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:08:17,362 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:08:17,363 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (1/1) ... [2024-11-16 09:08:17,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:08:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:17,402 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 09:08:17,407 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 09:08:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:08:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 09:08:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 09:08:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 09:08:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 09:08:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:08:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:08:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 09:08:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 09:08:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 09:08:17,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 09:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 09:08:17,458 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 09:08:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:08:17,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:08:17,555 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:08:17,558 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:08:25,454 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2024-11-16 09:08:25,455 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2024-11-16 09:08:25,455 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2024-11-16 09:08:25,455 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2024-11-16 09:08:25,456 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2024-11-16 09:08:25,457 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2024-11-16 09:08:25,457 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2024-11-16 09:08:25,710 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-11-16 09:08:25,710 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:08:25,777 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:08:25,778 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:08:25,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:08:25 BoogieIcfgContainer [2024-11-16 09:08:25,779 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:08:25,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:08:25,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:08:25,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:08:25,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:08:13" (1/3) ... [2024-11-16 09:08:25,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516168d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:08:25, skipping insertion in model container [2024-11-16 09:08:25,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:08:16" (2/3) ... [2024-11-16 09:08:25,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516168d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:08:25, skipping insertion in model container [2024-11-16 09:08:25,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:08:25" (3/3) ... [2024-11-16 09:08:25,790 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-1.c [2024-11-16 09:08:25,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:08:25,808 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:08:25,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:08:25,950 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;@27ae1dbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:08:25,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:08:25,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 2341 states, 2316 states have (on average 1.8475820379965457) internal successors, (4279), 2319 states have internal predecessors, (4279), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 09:08:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:08:25,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:25,985 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] [2024-11-16 09:08:25,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:25,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash -584040896, now seen corresponding path program 1 times [2024-11-16 09:08:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439191584] [2024-11-16 09:08:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:26,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:26,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:26,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:26,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:26,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:26,561 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 09:08:26,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:26,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439191584] [2024-11-16 09:08:26,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439191584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:26,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:08:26,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:08:26,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719214260] [2024-11-16 09:08:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:26,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:08:26,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:26,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:08:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:08:26,604 INFO L87 Difference]: Start difference. First operand has 2341 states, 2316 states have (on average 1.8475820379965457) internal successors, (4279), 2319 states have internal predecessors, (4279), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:27,401 INFO L93 Difference]: Finished difference Result 4703 states and 8667 transitions. [2024-11-16 09:08:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:08:27,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 73 [2024-11-16 09:08:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:27,429 INFO L225 Difference]: With dead ends: 4703 [2024-11-16 09:08:27,430 INFO L226 Difference]: Without dead ends: 2306 [2024-11-16 09:08:27,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:08:27,445 INFO L432 NwaCegarLoop]: 4146 mSDtfsCounter, 4396 mSDsluCounter, 12367 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:27,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4406 Valid, 16513 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 09:08:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2024-11-16 09:08:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2268. [2024-11-16 09:08:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2244 states have (on average 1.840463458110517) internal successors, (4130), 2246 states have internal predecessors, (4130), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 09:08:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 4162 transitions. [2024-11-16 09:08:27,601 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 4162 transitions. Word has length 73 [2024-11-16 09:08:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:27,601 INFO L471 AbstractCegarLoop]: Abstraction has 2268 states and 4162 transitions. [2024-11-16 09:08:27,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 4162 transitions. [2024-11-16 09:08:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:08:27,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:27,606 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] [2024-11-16 09:08:27,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:08:27,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:27,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash -303691007, now seen corresponding path program 1 times [2024-11-16 09:08:27,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290610586] [2024-11-16 09:08:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:27,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:27,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:27,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:27,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:27,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:27,835 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 09:08:27,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:27,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290610586] [2024-11-16 09:08:27,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290610586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:27,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:08:27,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:08:27,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897911163] [2024-11-16 09:08:27,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:27,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:08:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:08:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:08:27,841 INFO L87 Difference]: Start difference. First operand 2268 states and 4162 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:28,960 INFO L93 Difference]: Finished difference Result 2603 states and 4651 transitions. [2024-11-16 09:08:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:08:28,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 73 [2024-11-16 09:08:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:28,973 INFO L225 Difference]: With dead ends: 2603 [2024-11-16 09:08:28,974 INFO L226 Difference]: Without dead ends: 2468 [2024-11-16 09:08:28,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:08:28,979 INFO L432 NwaCegarLoop]: 4189 mSDtfsCounter, 4360 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 20788 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:28,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4369 Valid, 20788 Invalid, 1031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:08:28,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2024-11-16 09:08:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2404. [2024-11-16 09:08:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2359 states have (on average 1.8194150063586265) internal successors, (4292), 2363 states have internal predecessors, (4292), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2024-11-16 09:08:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4357 transitions. [2024-11-16 09:08:29,060 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4357 transitions. Word has length 73 [2024-11-16 09:08:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:29,061 INFO L471 AbstractCegarLoop]: Abstraction has 2404 states and 4357 transitions. [2024-11-16 09:08:29,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4357 transitions. [2024-11-16 09:08:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:08:29,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:29,070 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] [2024-11-16 09:08:29,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:08:29,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:29,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2060657184, now seen corresponding path program 1 times [2024-11-16 09:08:29,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:29,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434937367] [2024-11-16 09:08:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:29,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:29,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:29,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:29,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:29,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:29,253 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 09:08:29,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434937367] [2024-11-16 09:08:29,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434937367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:29,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:08:29,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:08:29,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041938598] [2024-11-16 09:08:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:29,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:08:29,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:08:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:08:29,256 INFO L87 Difference]: Start difference. First operand 2404 states and 4357 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:30,327 INFO L93 Difference]: Finished difference Result 3110 states and 5374 transitions. [2024-11-16 09:08:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:08:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 73 [2024-11-16 09:08:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:30,340 INFO L225 Difference]: With dead ends: 3110 [2024-11-16 09:08:30,340 INFO L226 Difference]: Without dead ends: 2841 [2024-11-16 09:08:30,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:08:30,345 INFO L432 NwaCegarLoop]: 4161 mSDtfsCounter, 4462 mSDsluCounter, 16539 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4474 SdHoareTripleChecker+Valid, 20700 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:30,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4474 Valid, 20700 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:08:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2024-11-16 09:08:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2651. [2024-11-16 09:08:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2572 states have (on average 1.7842146189735615) internal successors, (4589), 2578 states have internal predecessors, (4589), 49 states have call successors, (49), 24 states have call predecessors, (49), 28 states have return successors, (66), 52 states have call predecessors, (66), 49 states have call successors, (66) [2024-11-16 09:08:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 4704 transitions. [2024-11-16 09:08:30,445 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 4704 transitions. Word has length 73 [2024-11-16 09:08:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:30,445 INFO L471 AbstractCegarLoop]: Abstraction has 2651 states and 4704 transitions. [2024-11-16 09:08:30,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 4704 transitions. [2024-11-16 09:08:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:08:30,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:30,448 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] [2024-11-16 09:08:30,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:08:30,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:30,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1603851487, now seen corresponding path program 1 times [2024-11-16 09:08:30,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:30,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329659485] [2024-11-16 09:08:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:30,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:30,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:30,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:30,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:30,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:30,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:30,591 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 09:08:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:30,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329659485] [2024-11-16 09:08:30,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329659485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:30,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:08:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:08:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437781358] [2024-11-16 09:08:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:30,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:08:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:08:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:08:30,594 INFO L87 Difference]: Start difference. First operand 2651 states and 4704 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:31,091 INFO L93 Difference]: Finished difference Result 3274 states and 5611 transitions. [2024-11-16 09:08:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:08:31,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 73 [2024-11-16 09:08:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:31,106 INFO L225 Difference]: With dead ends: 3274 [2024-11-16 09:08:31,106 INFO L226 Difference]: Without dead ends: 2756 [2024-11-16 09:08:31,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:08:31,116 INFO L432 NwaCegarLoop]: 4077 mSDtfsCounter, 4326 mSDsluCounter, 12161 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 16238 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:31,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4336 Valid, 16238 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:08:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2024-11-16 09:08:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2651. [2024-11-16 09:08:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2572 states have (on average 1.7822706065318819) internal successors, (4584), 2578 states have internal predecessors, (4584), 49 states have call successors, (49), 24 states have call predecessors, (49), 28 states have return successors, (66), 52 states have call predecessors, (66), 49 states have call successors, (66) [2024-11-16 09:08:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 4699 transitions. [2024-11-16 09:08:31,206 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 4699 transitions. Word has length 73 [2024-11-16 09:08:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:31,207 INFO L471 AbstractCegarLoop]: Abstraction has 2651 states and 4699 transitions. [2024-11-16 09:08:31,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 4699 transitions. [2024-11-16 09:08:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:08:31,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:31,209 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] [2024-11-16 09:08:31,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:08:31,209 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:31,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1583514112, now seen corresponding path program 1 times [2024-11-16 09:08:31,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:31,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910074639] [2024-11-16 09:08:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:31,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:31,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:31,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:31,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:31,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:31,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:31,345 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 09:08:31,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910074639] [2024-11-16 09:08:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910074639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:31,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:08:31,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:08:31,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276331781] [2024-11-16 09:08:31,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:31,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:08:31,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:08:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:08:31,348 INFO L87 Difference]: Start difference. First operand 2651 states and 4699 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:32,264 INFO L93 Difference]: Finished difference Result 3907 states and 6480 transitions. [2024-11-16 09:08:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:08:32,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 73 [2024-11-16 09:08:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:32,285 INFO L225 Difference]: With dead ends: 3907 [2024-11-16 09:08:32,285 INFO L226 Difference]: Without dead ends: 3391 [2024-11-16 09:08:32,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:08:32,291 INFO L432 NwaCegarLoop]: 4169 mSDtfsCounter, 4376 mSDsluCounter, 16552 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 20721 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:32,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20721 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:08:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2024-11-16 09:08:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3145. [2024-11-16 09:08:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3000 states have (on average 1.7256666666666667) internal successors, (5177), 3010 states have internal predecessors, (5177), 87 states have call successors, (87), 48 states have call predecessors, (87), 56 states have return successors, (130), 94 states have call predecessors, (130), 87 states have call successors, (130) [2024-11-16 09:08:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5394 transitions. [2024-11-16 09:08:32,417 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5394 transitions. Word has length 73 [2024-11-16 09:08:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:32,417 INFO L471 AbstractCegarLoop]: Abstraction has 3145 states and 5394 transitions. [2024-11-16 09:08:32,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 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 09:08:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5394 transitions. [2024-11-16 09:08:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:08:32,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:32,421 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] [2024-11-16 09:08:32,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:08:32,421 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:32,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash -890121407, now seen corresponding path program 1 times [2024-11-16 09:08:32,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:32,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699332524] [2024-11-16 09:08:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:32,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:32,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:32,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:32,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:32,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:32,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:32,533 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 09:08:32,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699332524] [2024-11-16 09:08:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699332524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:32,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:08:32,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:08:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199798348] [2024-11-16 09:08:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:32,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:08:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:08:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:08:32,536 INFO L87 Difference]: Start difference. First operand 3145 states and 5394 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 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 09:08:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:33,457 INFO L93 Difference]: Finished difference Result 5454 states and 8662 transitions. [2024-11-16 09:08:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:08:33,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 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 73 [2024-11-16 09:08:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:33,480 INFO L225 Difference]: With dead ends: 5454 [2024-11-16 09:08:33,480 INFO L226 Difference]: Without dead ends: 4444 [2024-11-16 09:08:33,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-16 09:08:33,489 INFO L432 NwaCegarLoop]: 4207 mSDtfsCounter, 4520 mSDsluCounter, 12347 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4545 SdHoareTripleChecker+Valid, 16554 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:33,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4545 Valid, 16554 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:08:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2024-11-16 09:08:33,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4094. [2024-11-16 09:08:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 3812 states have (on average 1.6466421825813222) internal successors, (6277), 3838 states have internal predecessors, (6277), 168 states have call successors, (168), 96 states have call predecessors, (168), 112 states have return successors, (245), 167 states have call predecessors, (245), 168 states have call successors, (245) [2024-11-16 09:08:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 6690 transitions. [2024-11-16 09:08:33,661 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 6690 transitions. Word has length 73 [2024-11-16 09:08:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:33,661 INFO L471 AbstractCegarLoop]: Abstraction has 4094 states and 6690 transitions. [2024-11-16 09:08:33,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 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 09:08:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 6690 transitions. [2024-11-16 09:08:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:08:33,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:33,671 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:08:33,672 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:33,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1926138167, now seen corresponding path program 1 times [2024-11-16 09:08:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308186709] [2024-11-16 09:08:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:08:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:08:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:08:33,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:33,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308186709] [2024-11-16 09:08:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308186709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108936512] [2024-11-16 09:08:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:33,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:33,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:33,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:33,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:08:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:34,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:34,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:08:34,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:34,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108936512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:34,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:34,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:08:34,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769471276] [2024-11-16 09:08:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:34,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:34,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:34,115 INFO L87 Difference]: Start difference. First operand 4094 states and 6690 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:08:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:34,331 INFO L93 Difference]: Finished difference Result 7938 states and 12062 transitions. [2024-11-16 09:08:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2024-11-16 09:08:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:34,374 INFO L225 Difference]: With dead ends: 7938 [2024-11-16 09:08:34,375 INFO L226 Difference]: Without dead ends: 5979 [2024-11-16 09:08:34,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:34,386 INFO L432 NwaCegarLoop]: 4157 mSDtfsCounter, 4115 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4115 SdHoareTripleChecker+Valid, 4332 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:34,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4115 Valid, 4332 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5979 states. [2024-11-16 09:08:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5979 to 5912. [2024-11-16 09:08:34,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5912 states, 5364 states have (on average 1.5669276659209546) internal successors, (8405), 5414 states have internal predecessors, (8405), 322 states have call successors, (322), 192 states have call predecessors, (322), 224 states have return successors, (467), 313 states have call predecessors, (467), 322 states have call successors, (467) [2024-11-16 09:08:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 9194 transitions. [2024-11-16 09:08:34,652 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 9194 transitions. Word has length 121 [2024-11-16 09:08:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:34,653 INFO L471 AbstractCegarLoop]: Abstraction has 5912 states and 9194 transitions. [2024-11-16 09:08:34,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:08:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 9194 transitions. [2024-11-16 09:08:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:08:34,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:34,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:34,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:08:34,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:34,868 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:34,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1979237135, now seen corresponding path program 1 times [2024-11-16 09:08:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:34,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972907779] [2024-11-16 09:08:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:34,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:34,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:08:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:08:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:08:35,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:35,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972907779] [2024-11-16 09:08:35,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972907779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:35,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858498748] [2024-11-16 09:08:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:35,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:35,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:35,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:35,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:08:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:35,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:35,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 09:08:35,324 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:35,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858498748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:35,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:35,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:08:35,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221868288] [2024-11-16 09:08:35,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:35,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:35,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:35,327 INFO L87 Difference]: Start difference. First operand 5912 states and 9194 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:08:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:35,873 INFO L93 Difference]: Finished difference Result 13320 states and 19528 transitions. [2024-11-16 09:08:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2024-11-16 09:08:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:35,926 INFO L225 Difference]: With dead ends: 13320 [2024-11-16 09:08:35,927 INFO L226 Difference]: Without dead ends: 9543 [2024-11-16 09:08:35,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:35,949 INFO L432 NwaCegarLoop]: 4157 mSDtfsCounter, 4121 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4121 SdHoareTripleChecker+Valid, 4332 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:35,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4121 Valid, 4332 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9543 states. [2024-11-16 09:08:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9543 to 9412. [2024-11-16 09:08:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9412 states, 8340 states have (on average 1.4970023980815348) internal successors, (12485), 8438 states have internal predecessors, (12485), 622 states have call successors, (622), 384 states have call predecessors, (622), 448 states have return successors, (903), 597 states have call predecessors, (903), 622 states have call successors, (903) [2024-11-16 09:08:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9412 states to 9412 states and 14010 transitions. [2024-11-16 09:08:36,686 INFO L78 Accepts]: Start accepts. Automaton has 9412 states and 14010 transitions. Word has length 121 [2024-11-16 09:08:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:36,686 INFO L471 AbstractCegarLoop]: Abstraction has 9412 states and 14010 transitions. [2024-11-16 09:08:36,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:08:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 9412 states and 14010 transitions. [2024-11-16 09:08:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:08:36,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:36,698 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:36,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:08:36,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 09:08:36,899 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:36,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:36,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1040925397, now seen corresponding path program 1 times [2024-11-16 09:08:36,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:36,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818021051] [2024-11-16 09:08:36,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:36,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:36,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:36,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:36,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:37,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:37,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:37,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:08:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:37,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:37,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:08:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:08:37,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:37,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818021051] [2024-11-16 09:08:37,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818021051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:37,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40945388] [2024-11-16 09:08:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:37,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:37,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:37,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:37,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:08:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:37,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:37,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:08:37,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:37,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40945388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:37,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:37,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:37,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939062853] [2024-11-16 09:08:37,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:37,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:37,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:37,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:37,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:37,206 INFO L87 Difference]: Start difference. First operand 9412 states and 14010 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-16 09:08:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:37,785 INFO L93 Difference]: Finished difference Result 23187 states and 33422 transitions. [2024-11-16 09:08:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:37,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 121 [2024-11-16 09:08:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:37,852 INFO L225 Difference]: With dead ends: 23187 [2024-11-16 09:08:37,852 INFO L226 Difference]: Without dead ends: 15912 [2024-11-16 09:08:37,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:37,878 INFO L432 NwaCegarLoop]: 4325 mSDtfsCounter, 162 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 8479 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:37,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 8479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15912 states. [2024-11-16 09:08:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15912 to 15912. [2024-11-16 09:08:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 13907 states have (on average 1.4454591213058172) internal successors, (20102), 14070 states have internal predecessors, (20102), 1143 states have call successors, (1143), 732 states have call predecessors, (1143), 860 states have return successors, (1839), 1125 states have call predecessors, (1839), 1143 states have call successors, (1839) [2024-11-16 09:08:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 23084 transitions. [2024-11-16 09:08:38,698 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 23084 transitions. Word has length 121 [2024-11-16 09:08:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:38,699 INFO L471 AbstractCegarLoop]: Abstraction has 15912 states and 23084 transitions. [2024-11-16 09:08:38,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-16 09:08:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 23084 transitions. [2024-11-16 09:08:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:08:38,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:38,737 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:08:38,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:08:38,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:38,943 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:38,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash 642469031, now seen corresponding path program 1 times [2024-11-16 09:08:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593227639] [2024-11-16 09:08:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:08:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:08:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:08:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:08:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 09:08:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593227639] [2024-11-16 09:08:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593227639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519472136] [2024-11-16 09:08:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:39,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:39,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:39,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:08:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:39,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:39,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 09:08:39,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:39,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519472136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:39,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:39,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528907302] [2024-11-16 09:08:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:39,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:39,517 INFO L87 Difference]: Start difference. First operand 15912 states and 23084 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:08:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:39,954 INFO L93 Difference]: Finished difference Result 24755 states and 35752 transitions. [2024-11-16 09:08:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:39,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 179 [2024-11-16 09:08:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:40,016 INFO L225 Difference]: With dead ends: 24755 [2024-11-16 09:08:40,016 INFO L226 Difference]: Without dead ends: 14220 [2024-11-16 09:08:40,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:40,054 INFO L432 NwaCegarLoop]: 4154 mSDtfsCounter, 4082 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:40,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4188 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14220 states. [2024-11-16 09:08:40,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14220 to 14156. [2024-11-16 09:08:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14156 states, 12443 states have (on average 1.4226472715583058) internal successors, (17702), 12568 states have internal predecessors, (17702), 965 states have call successors, (965), 650 states have call predecessors, (965), 746 states have return successors, (1467), 947 states have call predecessors, (1467), 965 states have call successors, (1467) [2024-11-16 09:08:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14156 states to 14156 states and 20134 transitions. [2024-11-16 09:08:40,873 INFO L78 Accepts]: Start accepts. Automaton has 14156 states and 20134 transitions. Word has length 179 [2024-11-16 09:08:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:40,873 INFO L471 AbstractCegarLoop]: Abstraction has 14156 states and 20134 transitions. [2024-11-16 09:08:40,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:08:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 14156 states and 20134 transitions. [2024-11-16 09:08:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:08:40,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:40,910 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:08:40,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 09:08:41,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:41,112 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:41,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2146871685, now seen corresponding path program 1 times [2024-11-16 09:08:41,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:41,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081100511] [2024-11-16 09:08:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:41,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:08:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:08:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:08:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:08:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-16 09:08:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081100511] [2024-11-16 09:08:41,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081100511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907295515] [2024-11-16 09:08:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:41,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:41,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:41,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:41,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 09:08:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:41,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:41,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 09:08:41,414 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907295515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:41,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:41,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695862883] [2024-11-16 09:08:41,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:41,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:41,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:41,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:41,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:41,416 INFO L87 Difference]: Start difference. First operand 14156 states and 20134 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:08:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:42,004 INFO L93 Difference]: Finished difference Result 27333 states and 38190 transitions. [2024-11-16 09:08:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:42,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 179 [2024-11-16 09:08:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:42,066 INFO L225 Difference]: With dead ends: 27333 [2024-11-16 09:08:42,066 INFO L226 Difference]: Without dead ends: 15322 [2024-11-16 09:08:42,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:42,102 INFO L432 NwaCegarLoop]: 4158 mSDtfsCounter, 4132 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4132 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:42,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4132 Valid, 4191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2024-11-16 09:08:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 15322. [2024-11-16 09:08:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15322 states, 13529 states have (on average 1.3909379850691108) internal successors, (18818), 13654 states have internal predecessors, (18818), 979 states have call successors, (979), 716 states have call predecessors, (979), 812 states have return successors, (1481), 961 states have call predecessors, (1481), 979 states have call successors, (1481) [2024-11-16 09:08:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15322 states to 15322 states and 21278 transitions. [2024-11-16 09:08:43,262 INFO L78 Accepts]: Start accepts. Automaton has 15322 states and 21278 transitions. Word has length 179 [2024-11-16 09:08:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:43,263 INFO L471 AbstractCegarLoop]: Abstraction has 15322 states and 21278 transitions. [2024-11-16 09:08:43,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:08:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 15322 states and 21278 transitions. [2024-11-16 09:08:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:08:43,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:43,304 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:08:43,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 09:08:43,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 09:08:43,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:43,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1991707905, now seen corresponding path program 1 times [2024-11-16 09:08:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98910398] [2024-11-16 09:08:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:08:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:08:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:08:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:08:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 09:08:43,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:43,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98910398] [2024-11-16 09:08:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98910398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:43,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441290217] [2024-11-16 09:08:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:43,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:43,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:43,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 09:08:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:43,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:08:43,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 09:08:43,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441290217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:43,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:43,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117603305] [2024-11-16 09:08:43,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:43,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:43,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:43,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:43,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:43,893 INFO L87 Difference]: Start difference. First operand 15322 states and 21278 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:08:44,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:44,682 INFO L93 Difference]: Finished difference Result 26504 states and 35916 transitions. [2024-11-16 09:08:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:44,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 179 [2024-11-16 09:08:44,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:44,739 INFO L225 Difference]: With dead ends: 26504 [2024-11-16 09:08:44,739 INFO L226 Difference]: Without dead ends: 16134 [2024-11-16 09:08:44,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:44,764 INFO L432 NwaCegarLoop]: 4196 mSDtfsCounter, 4093 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:44,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4093 Valid, 4376 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2024-11-16 09:08:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 15218. [2024-11-16 09:08:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15218 states, 13425 states have (on average 1.3784729981378026) internal successors, (18506), 13550 states have internal predecessors, (18506), 979 states have call successors, (979), 716 states have call predecessors, (979), 812 states have return successors, (1481), 961 states have call predecessors, (1481), 979 states have call successors, (1481) [2024-11-16 09:08:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15218 states to 15218 states and 20966 transitions. [2024-11-16 09:08:45,514 INFO L78 Accepts]: Start accepts. Automaton has 15218 states and 20966 transitions. Word has length 179 [2024-11-16 09:08:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:45,515 INFO L471 AbstractCegarLoop]: Abstraction has 15218 states and 20966 transitions. [2024-11-16 09:08:45,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:08:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15218 states and 20966 transitions. [2024-11-16 09:08:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:08:45,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:45,543 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:08:45,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 09:08:45,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:45,744 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:45,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash -426914675, now seen corresponding path program 1 times [2024-11-16 09:08:45,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:45,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703069287] [2024-11-16 09:08:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:08:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:08:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 09:08:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:08:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-16 09:08:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:45,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703069287] [2024-11-16 09:08:45,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703069287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:45,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295736038] [2024-11-16 09:08:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:45,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:45,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:45,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:45,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 09:08:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:46,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:46,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 09:08:46,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:46,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295736038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:46,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:46,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:46,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989354450] [2024-11-16 09:08:46,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:46,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:46,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:46,039 INFO L87 Difference]: Start difference. First operand 15218 states and 20966 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:08:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:46,900 INFO L93 Difference]: Finished difference Result 40534 states and 54296 transitions. [2024-11-16 09:08:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:46,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 180 [2024-11-16 09:08:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:46,997 INFO L225 Difference]: With dead ends: 40534 [2024-11-16 09:08:46,997 INFO L226 Difference]: Without dead ends: 27461 [2024-11-16 09:08:47,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:47,032 INFO L432 NwaCegarLoop]: 4323 mSDtfsCounter, 159 mSDsluCounter, 4149 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 8472 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:47,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 8472 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27461 states. [2024-11-16 09:08:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27461 to 27458. [2024-11-16 09:08:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27458 states, 23959 states have (on average 1.3299386451855253) internal successors, (31864), 24208 states have internal predecessors, (31864), 1901 states have call successors, (1901), 1404 states have call predecessors, (1901), 1596 states have return successors, (3263), 1865 states have call predecessors, (3263), 1901 states have call successors, (3263) [2024-11-16 09:08:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27458 states to 27458 states and 37028 transitions. [2024-11-16 09:08:48,358 INFO L78 Accepts]: Start accepts. Automaton has 27458 states and 37028 transitions. Word has length 180 [2024-11-16 09:08:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:48,358 INFO L471 AbstractCegarLoop]: Abstraction has 27458 states and 37028 transitions. [2024-11-16 09:08:48,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:08:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 27458 states and 37028 transitions. [2024-11-16 09:08:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:08:48,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:48,402 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:08:48,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 09:08:48,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:48,603 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:48,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2124510569, now seen corresponding path program 1 times [2024-11-16 09:08:48,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524984341] [2024-11-16 09:08:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:08:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:08:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:08:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:08:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 09:08:48,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524984341] [2024-11-16 09:08:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524984341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612767310] [2024-11-16 09:08:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:48,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:48,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:48,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:48,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 09:08:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:48,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:48,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 09:08:48,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:48,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612767310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:48,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:48,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024401675] [2024-11-16 09:08:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:48,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:48,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:48,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:48,995 INFO L87 Difference]: Start difference. First operand 27458 states and 37028 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:08:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:49,912 INFO L93 Difference]: Finished difference Result 45535 states and 61775 transitions. [2024-11-16 09:08:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:49,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 180 [2024-11-16 09:08:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:49,999 INFO L225 Difference]: With dead ends: 45535 [2024-11-16 09:08:49,999 INFO L226 Difference]: Without dead ends: 23556 [2024-11-16 09:08:50,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:50,044 INFO L432 NwaCegarLoop]: 4149 mSDtfsCounter, 4075 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:50,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4181 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23556 states. [2024-11-16 09:08:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23556 to 23268. [2024-11-16 09:08:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23268 states, 20397 states have (on average 1.3086238172280238) internal successors, (26692), 20572 states have internal predecessors, (26692), 1565 states have call successors, (1565), 1176 states have call predecessors, (1565), 1304 states have return successors, (2557), 1531 states have call predecessors, (2557), 1565 states have call successors, (2557) [2024-11-16 09:08:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23268 states to 23268 states and 30814 transitions. [2024-11-16 09:08:51,413 INFO L78 Accepts]: Start accepts. Automaton has 23268 states and 30814 transitions. Word has length 180 [2024-11-16 09:08:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:51,413 INFO L471 AbstractCegarLoop]: Abstraction has 23268 states and 30814 transitions. [2024-11-16 09:08:51,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:08:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 23268 states and 30814 transitions. [2024-11-16 09:08:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:08:51,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:51,439 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:08:51,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 09:08:51,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 09:08:51,640 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:51,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1943417163, now seen corresponding path program 1 times [2024-11-16 09:08:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441217192] [2024-11-16 09:08:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:08:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:08:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:08:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:08:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 09:08:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441217192] [2024-11-16 09:08:51,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441217192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196156010] [2024-11-16 09:08:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:51,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:51,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:51,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 09:08:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:51,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:08:51,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:08:51,938 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196156010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:51,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224196992] [2024-11-16 09:08:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:51,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:51,943 INFO L87 Difference]: Start difference. First operand 23268 states and 30814 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:08:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:53,573 INFO L93 Difference]: Finished difference Result 62746 states and 81812 transitions. [2024-11-16 09:08:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:53,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 180 [2024-11-16 09:08:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:53,726 INFO L225 Difference]: With dead ends: 62746 [2024-11-16 09:08:53,726 INFO L226 Difference]: Without dead ends: 41637 [2024-11-16 09:08:53,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:53,793 INFO L432 NwaCegarLoop]: 4314 mSDtfsCounter, 146 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8458 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:53,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 8458 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41637 states. [2024-11-16 09:08:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41637 to 41634. [2024-11-16 09:08:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41634 states, 36119 states have (on average 1.2696918519338851) internal successors, (45860), 36468 states have internal predecessors, (45860), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:08:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 54542 transitions. [2024-11-16 09:08:55,961 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 54542 transitions. Word has length 180 [2024-11-16 09:08:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:08:55,961 INFO L471 AbstractCegarLoop]: Abstraction has 41634 states and 54542 transitions. [2024-11-16 09:08:55,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:08:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 54542 transitions. [2024-11-16 09:08:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:08:56,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:08:56,010 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:08:56,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 09:08:56,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 09:08:56,211 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:08:56,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:08:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2129322849, now seen corresponding path program 1 times [2024-11-16 09:08:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:08:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834088988] [2024-11-16 09:08:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:08:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:08:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:08:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:08:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:08:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:08:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:08:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:08:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:08:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:08:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:08:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 09:08:56,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:08:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834088988] [2024-11-16 09:08:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834088988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:08:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639125549] [2024-11-16 09:08:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:08:56,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:08:56,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:08:56,358 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:08:56,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 09:08:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:08:56,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:08:56,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:08:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 09:08:56,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:08:56,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639125549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:08:56,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:08:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:08:56,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964049794] [2024-11-16 09:08:56,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:08:56,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:08:56,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:08:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:08:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:56,534 INFO L87 Difference]: Start difference. First operand 41634 states and 54542 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:08:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:08:59,178 INFO L93 Difference]: Finished difference Result 74526 states and 96784 transitions. [2024-11-16 09:08:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:08:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 181 [2024-11-16 09:08:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:08:59,338 INFO L225 Difference]: With dead ends: 74526 [2024-11-16 09:08:59,338 INFO L226 Difference]: Without dead ends: 42085 [2024-11-16 09:08:59,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:08:59,400 INFO L432 NwaCegarLoop]: 4171 mSDtfsCounter, 4100 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:08:59,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 4344 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:08:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42085 states. [2024-11-16 09:09:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42085 to 41634. [2024-11-16 09:09:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41634 states, 36119 states have (on average 1.26271491458789) internal successors, (45608), 36468 states have internal predecessors, (45608), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:09:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 54290 transitions. [2024-11-16 09:09:01,806 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 54290 transitions. Word has length 181 [2024-11-16 09:09:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:09:01,806 INFO L471 AbstractCegarLoop]: Abstraction has 41634 states and 54290 transitions. [2024-11-16 09:09:01,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:09:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 54290 transitions. [2024-11-16 09:09:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:09:01,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:09:01,848 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:09:01,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 09:09:02,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 09:09:02,049 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:09:02,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:09:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash 275329689, now seen corresponding path program 1 times [2024-11-16 09:09:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:09:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671723479] [2024-11-16 09:09:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:09:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:09:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:09:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:09:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:09:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:09:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:09:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:09:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:09:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:09:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-16 09:09:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:09:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:09:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-16 09:09:02,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:09:02,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671723479] [2024-11-16 09:09:02,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671723479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:09:02,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598711136] [2024-11-16 09:09:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:09:02,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:09:02,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:09:02,238 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:09:02,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 09:09:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:02,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:09:02,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:09:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 09:09:02,437 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:09:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598711136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:09:02,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:09:02,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:09:02,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837915203] [2024-11-16 09:09:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:09:02,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:09:02,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:09:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:09:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:09:02,439 INFO L87 Difference]: Start difference. First operand 41634 states and 54290 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:09:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:09:04,508 INFO L93 Difference]: Finished difference Result 74810 states and 96746 transitions. [2024-11-16 09:09:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:09:04,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 181 [2024-11-16 09:09:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:09:04,649 INFO L225 Difference]: With dead ends: 74810 [2024-11-16 09:09:04,650 INFO L226 Difference]: Without dead ends: 42369 [2024-11-16 09:09:04,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:09:04,706 INFO L432 NwaCegarLoop]: 4188 mSDtfsCounter, 4103 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4103 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:09:04,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4103 Valid, 4363 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:09:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42369 states. [2024-11-16 09:09:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42369 to 41550. [2024-11-16 09:09:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41550 states, 36035 states have (on average 1.2563341196059388) internal successors, (45272), 36384 states have internal predecessors, (45272), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:09:07,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41550 states to 41550 states and 53954 transitions. [2024-11-16 09:09:07,274 INFO L78 Accepts]: Start accepts. Automaton has 41550 states and 53954 transitions. Word has length 181 [2024-11-16 09:09:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:09:07,274 INFO L471 AbstractCegarLoop]: Abstraction has 41550 states and 53954 transitions. [2024-11-16 09:09:07,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:09:07,275 INFO L276 IsEmpty]: Start isEmpty. Operand 41550 states and 53954 transitions. [2024-11-16 09:09:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:09:07,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:09:07,307 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:09:07,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 09:09:07,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 09:09:07,507 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:09:07,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:09:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1477694369, now seen corresponding path program 1 times [2024-11-16 09:09:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:09:07,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038437137] [2024-11-16 09:09:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:09:07,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:09:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:09:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:09:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:09:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:09:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:09:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:09:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:09:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:09:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:09:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:09:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:09:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:09:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-16 09:09:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:09:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038437137] [2024-11-16 09:09:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038437137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:09:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:09:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:09:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943158203] [2024-11-16 09:09:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:09:07,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:09:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:09:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:09:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:09:07,597 INFO L87 Difference]: Start difference. First operand 41550 states and 53954 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 09:09:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:09:10,391 INFO L93 Difference]: Finished difference Result 81875 states and 104382 transitions. [2024-11-16 09:09:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:09:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 181 [2024-11-16 09:09:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:09:10,507 INFO L225 Difference]: With dead ends: 81875 [2024-11-16 09:09:10,507 INFO L226 Difference]: Without dead ends: 42476 [2024-11-16 09:09:10,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:09:10,555 INFO L432 NwaCegarLoop]: 4095 mSDtfsCounter, 295 mSDsluCounter, 12042 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 16137 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:09:10,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 16137 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:09:10,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42476 states.