./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+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_label46+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 ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:14:06,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:14:06,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:14:06,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:14:06,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:14:06,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:14:06,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:14:06,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:14:06,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:14:06,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:14:06,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:14:06,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:14:06,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:14:06,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:14:06,267 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:14:06,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:14:06,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:14:06,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:14:06,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:14:06,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:14:06,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:14:06,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:14:06,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:14:06,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:14:06,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:14:06,274 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:14:06,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:14:06,275 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:14:06,275 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:14:06,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:14:06,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:14:06,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:14:06,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:14:06,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:14:06,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:14:06,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:14:06,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:14:06,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:14:06,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:14:06,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:14:06,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:14:06,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:14:06,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f [2024-11-16 09:14:06,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:14:06,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:14:06,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:14:06,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:14:06,536 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:14:06,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2024-11-16 09:14:08,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:14:08,654 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:14:08,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2024-11-16 09:14:08,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08dce95dc/615fc4c4a5e34ea6b2986eae80471772/FLAG7f15d029d [2024-11-16 09:14:08,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08dce95dc/615fc4c4a5e34ea6b2986eae80471772 [2024-11-16 09:14:08,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:14:08,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:14:08,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:14:08,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:14:08,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:14:08,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:14:08" (1/1) ... [2024-11-16 09:14:08,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3deb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:08, skipping insertion in model container [2024-11-16 09:14:08,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:14:08" (1/1) ... [2024-11-16 09:14:08,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:14:10,528 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_label46+token_ring.02.cil-1.c[382357,382370] [2024-11-16 09:14:10,564 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_label46+token_ring.02.cil-1.c[383339,383352] [2024-11-16 09:14:10,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:14:10,753 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:14:11,527 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_label46+token_ring.02.cil-1.c[382357,382370] [2024-11-16 09:14:11,534 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_label46+token_ring.02.cil-1.c[383339,383352] [2024-11-16 09:14:11,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:14:11,618 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:14:11,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11 WrapperNode [2024-11-16 09:14:11,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:14:11,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:14:11,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:14:11,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:14:11,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:11,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,154 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12627 [2024-11-16 09:14:12,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:14:12,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:14:12,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:14:12,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:14:12,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,245 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,502 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 09:14:12,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,662 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:14:12,774 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:14:12,774 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:14:12,774 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:14:12,775 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (1/1) ... [2024-11-16 09:14:12,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:14:12,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:12,812 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 09:14:12,816 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 09:14:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:14:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 09:14:12,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 09:14:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 09:14:12,867 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 09:14:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:14:12,867 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:14:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 09:14:12,868 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 09:14:12,868 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 09:14:12,868 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 09:14:12,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:14:12,868 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 09:14:12,868 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 09:14:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:14:12,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:14:12,984 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:14:12,986 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:14:20,442 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2024-11-16 09:14:20,443 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2024-11-16 09:14:20,444 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2024-11-16 09:14:20,444 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2024-11-16 09:14:20,444 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2024-11-16 09:14:20,445 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2024-11-16 09:14:20,445 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2024-11-16 09:14:20,822 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-11-16 09:14:20,822 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:14:20,888 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:14:20,889 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:14:20,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:14:20 BoogieIcfgContainer [2024-11-16 09:14:20,890 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:14:20,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:14:20,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:14:20,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:14:20,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:14:08" (1/3) ... [2024-11-16 09:14:20,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b65a66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:14:20, skipping insertion in model container [2024-11-16 09:14:20,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:14:11" (2/3) ... [2024-11-16 09:14:20,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b65a66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:14:20, skipping insertion in model container [2024-11-16 09:14:20,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:14:20" (3/3) ... [2024-11-16 09:14:20,901 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.02.cil-1.c [2024-11-16 09:14:20,918 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:14:20,918 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:14:21,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:14:21,061 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;@450d1fcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:14:21,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:14:21,077 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 09:14:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:14:21,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:21,095 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 09:14:21,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:21,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash -584040896, now seen corresponding path program 1 times [2024-11-16 09:14:21,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:21,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103929961] [2024-11-16 09:14:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:21,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:21,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:21,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:21,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:21,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:21,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:21,752 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 09:14:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:21,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103929961] [2024-11-16 09:14:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103929961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:21,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:14:21,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:14:21,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29725585] [2024-11-16 09:14:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:21,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:14:21,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:14:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:14:21,808 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 09:14:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:22,597 INFO L93 Difference]: Finished difference Result 4703 states and 8667 transitions. [2024-11-16 09:14:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:14:22,600 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 09:14:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:22,628 INFO L225 Difference]: With dead ends: 4703 [2024-11-16 09:14:22,628 INFO L226 Difference]: Without dead ends: 2306 [2024-11-16 09:14:22,642 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 09:14:22,646 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 09:14:22,648 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 09:14:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2024-11-16 09:14:22,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2268. [2024-11-16 09:14:22,787 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 09:14:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 4162 transitions. [2024-11-16 09:14:22,799 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 4162 transitions. Word has length 73 [2024-11-16 09:14:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:22,800 INFO L471 AbstractCegarLoop]: Abstraction has 2268 states and 4162 transitions. [2024-11-16 09:14:22,800 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 09:14:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 4162 transitions. [2024-11-16 09:14:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:14:22,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:22,804 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 09:14:22,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:14:22,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:22,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash -303691007, now seen corresponding path program 1 times [2024-11-16 09:14:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:22,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885247257] [2024-11-16 09:14:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:22,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:22,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:22,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:22,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:23,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:23,007 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 09:14:23,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:23,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885247257] [2024-11-16 09:14:23,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885247257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:23,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:14:23,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:14:23,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514360893] [2024-11-16 09:14:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:23,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:14:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:23,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:14:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:14:23,011 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 09:14:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:24,092 INFO L93 Difference]: Finished difference Result 2603 states and 4651 transitions. [2024-11-16 09:14:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:14:24,092 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 09:14:24,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:24,104 INFO L225 Difference]: With dead ends: 2603 [2024-11-16 09:14:24,104 INFO L226 Difference]: Without dead ends: 2468 [2024-11-16 09:14:24,107 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 09:14:24,108 INFO L432 NwaCegarLoop]: 4189 mSDtfsCounter, 4360 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 09:14:24,108 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 09:14:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2024-11-16 09:14:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2404. [2024-11-16 09:14:24,176 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 09:14:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4357 transitions. [2024-11-16 09:14:24,186 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4357 transitions. Word has length 73 [2024-11-16 09:14:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:24,188 INFO L471 AbstractCegarLoop]: Abstraction has 2404 states and 4357 transitions. [2024-11-16 09:14:24,188 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 09:14:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4357 transitions. [2024-11-16 09:14:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:14:24,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:24,192 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 09:14:24,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:14:24,192 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:24,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2060657184, now seen corresponding path program 1 times [2024-11-16 09:14:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:24,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666236239] [2024-11-16 09:14:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:24,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:24,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:24,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:24,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:24,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:24,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:24,414 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 09:14:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:24,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666236239] [2024-11-16 09:14:24,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666236239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:24,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:14:24,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:14:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164832324] [2024-11-16 09:14:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:24,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:14:24,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:14:24,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:14:24,421 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 09:14:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:25,505 INFO L93 Difference]: Finished difference Result 3110 states and 5374 transitions. [2024-11-16 09:14:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:14:25,506 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 09:14:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:25,520 INFO L225 Difference]: With dead ends: 3110 [2024-11-16 09:14:25,520 INFO L226 Difference]: Without dead ends: 2841 [2024-11-16 09:14:25,524 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 09:14:25,527 INFO L432 NwaCegarLoop]: 4161 mSDtfsCounter, 4462 mSDsluCounter, 16539 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4474 SdHoareTripleChecker+Valid, 20700 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:14:25,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4474 Valid, 20700 Invalid, 969 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:14:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2024-11-16 09:14:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2651. [2024-11-16 09:14:25,610 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 09:14:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 4704 transitions. [2024-11-16 09:14:25,622 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 4704 transitions. Word has length 73 [2024-11-16 09:14:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:25,622 INFO L471 AbstractCegarLoop]: Abstraction has 2651 states and 4704 transitions. [2024-11-16 09:14:25,623 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 09:14:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 4704 transitions. [2024-11-16 09:14:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:14:25,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:25,625 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 09:14:25,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:14:25,625 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:25,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:25,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1603851487, now seen corresponding path program 1 times [2024-11-16 09:14:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:25,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961748189] [2024-11-16 09:14:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:25,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:25,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:25,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:25,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:25,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:25,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:25,761 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 09:14:25,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:25,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961748189] [2024-11-16 09:14:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961748189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:25,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:14:25,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:14:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514677352] [2024-11-16 09:14:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:25,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:14:25,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:14:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:14:25,764 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 09:14:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:26,349 INFO L93 Difference]: Finished difference Result 3274 states and 5611 transitions. [2024-11-16 09:14:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:14:26,350 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 09:14:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:26,364 INFO L225 Difference]: With dead ends: 3274 [2024-11-16 09:14:26,365 INFO L226 Difference]: Without dead ends: 2756 [2024-11-16 09:14:26,369 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 09:14:26,370 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, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:14:26,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4336 Valid, 16238 Invalid, 481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:14:26,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2024-11-16 09:14:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2651. [2024-11-16 09:14:26,452 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 09:14:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 4699 transitions. [2024-11-16 09:14:26,463 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 4699 transitions. Word has length 73 [2024-11-16 09:14:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:26,463 INFO L471 AbstractCegarLoop]: Abstraction has 2651 states and 4699 transitions. [2024-11-16 09:14:26,464 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 09:14:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 4699 transitions. [2024-11-16 09:14:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:14:26,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:26,466 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 09:14:26,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:14:26,467 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:26,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1583514112, now seen corresponding path program 1 times [2024-11-16 09:14:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364727115] [2024-11-16 09:14:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:26,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:26,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:26,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:26,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:26,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:26,617 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 09:14:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:26,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364727115] [2024-11-16 09:14:26,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364727115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:26,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:14:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:14:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259647185] [2024-11-16 09:14:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:26,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:14:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:14:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:14:26,620 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 09:14:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:27,633 INFO L93 Difference]: Finished difference Result 3907 states and 6480 transitions. [2024-11-16 09:14:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:14:27,637 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 09:14:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:27,656 INFO L225 Difference]: With dead ends: 3907 [2024-11-16 09:14:27,657 INFO L226 Difference]: Without dead ends: 3391 [2024-11-16 09:14:27,660 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 09:14:27,661 INFO L432 NwaCegarLoop]: 4169 mSDtfsCounter, 4376 mSDsluCounter, 16552 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:14:27,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20721 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:14:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2024-11-16 09:14:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3145. [2024-11-16 09:14:27,771 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 09:14:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5394 transitions. [2024-11-16 09:14:27,789 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5394 transitions. Word has length 73 [2024-11-16 09:14:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:27,789 INFO L471 AbstractCegarLoop]: Abstraction has 3145 states and 5394 transitions. [2024-11-16 09:14:27,790 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 09:14:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5394 transitions. [2024-11-16 09:14:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:14:27,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:27,793 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 09:14:27,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:14:27,793 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:27,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash -890121407, now seen corresponding path program 1 times [2024-11-16 09:14:27,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:27,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328393517] [2024-11-16 09:14:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:27,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:27,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:27,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:27,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:27,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:27,903 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 09:14:27,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328393517] [2024-11-16 09:14:27,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328393517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:27,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:14:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:14:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575352692] [2024-11-16 09:14:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:27,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:14:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:14:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:14:27,907 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 09:14:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:28,834 INFO L93 Difference]: Finished difference Result 5454 states and 8662 transitions. [2024-11-16 09:14:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:14:28,835 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 09:14:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:28,857 INFO L225 Difference]: With dead ends: 5454 [2024-11-16 09:14:28,858 INFO L226 Difference]: Without dead ends: 4444 [2024-11-16 09:14:28,864 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 09:14:28,866 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 09:14:28,866 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 09:14:28,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2024-11-16 09:14:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4094. [2024-11-16 09:14:29,029 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 09:14:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 6690 transitions. [2024-11-16 09:14:29,047 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 6690 transitions. Word has length 73 [2024-11-16 09:14:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:29,050 INFO L471 AbstractCegarLoop]: Abstraction has 4094 states and 6690 transitions. [2024-11-16 09:14:29,050 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 09:14:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 6690 transitions. [2024-11-16 09:14:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:14:29,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:29,058 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 09:14:29,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:14:29,058 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:29,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1926138167, now seen corresponding path program 1 times [2024-11-16 09:14:29,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:29,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483406838] [2024-11-16 09:14:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:14:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:14:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,211 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 09:14:29,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:29,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483406838] [2024-11-16 09:14:29,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483406838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513060590] [2024-11-16 09:14:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:29,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:29,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:29,215 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 09:14:29,216 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 09:14:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:29,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:29,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:29,407 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 09:14:29,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513060590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:29,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:29,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:14:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926165689] [2024-11-16 09:14:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:29,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:29,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:29,413 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 09:14:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:29,769 INFO L93 Difference]: Finished difference Result 7938 states and 12062 transitions. [2024-11-16 09:14:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:29,770 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 09:14:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:29,798 INFO L225 Difference]: With dead ends: 7938 [2024-11-16 09:14:29,799 INFO L226 Difference]: Without dead ends: 5979 [2024-11-16 09:14:29,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 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 09:14:29,807 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 09:14:29,807 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 09:14:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5979 states. [2024-11-16 09:14:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5979 to 5912. [2024-11-16 09:14:30,045 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 09:14:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 9194 transitions. [2024-11-16 09:14:30,064 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 9194 transitions. Word has length 121 [2024-11-16 09:14:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:30,064 INFO L471 AbstractCegarLoop]: Abstraction has 5912 states and 9194 transitions. [2024-11-16 09:14:30,065 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 09:14:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 9194 transitions. [2024-11-16 09:14:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:14:30,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:30,073 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 09:14:30,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 09:14:30,274 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 09:14:30,275 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:30,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1979237135, now seen corresponding path program 1 times [2024-11-16 09:14:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:30,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153599325] [2024-11-16 09:14:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:30,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:14:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:14:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,424 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 09:14:30,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153599325] [2024-11-16 09:14:30,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153599325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:30,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999104404] [2024-11-16 09:14:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:30,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:30,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:30,427 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 09:14:30,428 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 09:14:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:30,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:30,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:30,591 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 09:14:30,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:30,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999104404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:30,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:30,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:14:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904482772] [2024-11-16 09:14:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:30,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:30,595 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 09:14:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:30,954 INFO L93 Difference]: Finished difference Result 13320 states and 19528 transitions. [2024-11-16 09:14:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:30,954 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 09:14:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:31,009 INFO L225 Difference]: With dead ends: 13320 [2024-11-16 09:14:31,009 INFO L226 Difference]: Without dead ends: 9543 [2024-11-16 09:14:31,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 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 09:14:31,027 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 09:14:31,027 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 09:14:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9543 states. [2024-11-16 09:14:31,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9543 to 9412. [2024-11-16 09:14:31,620 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 09:14:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9412 states to 9412 states and 14010 transitions. [2024-11-16 09:14:31,655 INFO L78 Accepts]: Start accepts. Automaton has 9412 states and 14010 transitions. Word has length 121 [2024-11-16 09:14:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:31,655 INFO L471 AbstractCegarLoop]: Abstraction has 9412 states and 14010 transitions. [2024-11-16 09:14:31,655 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 09:14:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9412 states and 14010 transitions. [2024-11-16 09:14:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:14:31,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:31,668 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 09:14:31,686 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 09:14:31,869 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 09:14:31,869 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:31,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1040925397, now seen corresponding path program 1 times [2024-11-16 09:14:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:31,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366874176] [2024-11-16 09:14:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:31,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:31,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:31,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:32,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:32,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:32,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:14:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:32,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:32,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:14:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:32,039 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 09:14:32,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366874176] [2024-11-16 09:14:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366874176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759085692] [2024-11-16 09:14:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:32,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:32,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:32,043 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 09:14:32,044 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 09:14:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:32,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:32,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:32,191 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 09:14:32,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759085692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:32,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:32,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128986864] [2024-11-16 09:14:32,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:32,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:32,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:32,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:32,194 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 09:14:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:33,068 INFO L93 Difference]: Finished difference Result 23187 states and 33422 transitions. [2024-11-16 09:14:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:33,068 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 09:14:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:33,147 INFO L225 Difference]: With dead ends: 23187 [2024-11-16 09:14:33,148 INFO L226 Difference]: Without dead ends: 15912 [2024-11-16 09:14:33,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 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 09:14:33,184 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 09:14:33,184 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 09:14:33,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15912 states. [2024-11-16 09:14:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15912 to 15912. [2024-11-16 09:14:34,185 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 09:14:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 23084 transitions. [2024-11-16 09:14:34,240 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 23084 transitions. Word has length 121 [2024-11-16 09:14:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:34,241 INFO L471 AbstractCegarLoop]: Abstraction has 15912 states and 23084 transitions. [2024-11-16 09:14:34,241 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 09:14:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 23084 transitions. [2024-11-16 09:14:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:14:34,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:34,282 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 09:14:34,299 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 09:14:34,486 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 09:14:34,488 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:34,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:34,488 INFO L85 PathProgramCache]: Analyzing trace with hash 642469031, now seen corresponding path program 1 times [2024-11-16 09:14:34,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:34,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974930084] [2024-11-16 09:14:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:34,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:14:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:14:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:14:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:14:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,654 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 09:14:34,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974930084] [2024-11-16 09:14:34,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974930084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146461080] [2024-11-16 09:14:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:34,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:34,658 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 09:14:34,659 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 09:14:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:34,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:34,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:34,887 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 09:14:34,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146461080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:34,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:34,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141331861] [2024-11-16 09:14:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:34,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:34,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:34,889 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 09:14:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:35,474 INFO L93 Difference]: Finished difference Result 24755 states and 35752 transitions. [2024-11-16 09:14:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:35,475 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 09:14:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:35,539 INFO L225 Difference]: With dead ends: 24755 [2024-11-16 09:14:35,540 INFO L226 Difference]: Without dead ends: 14220 [2024-11-16 09:14:35,715 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 09:14:35,716 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 09:14:35,717 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 09:14:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14220 states. [2024-11-16 09:14:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14220 to 14156. [2024-11-16 09:14:36,342 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 09:14:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14156 states to 14156 states and 20134 transitions. [2024-11-16 09:14:36,394 INFO L78 Accepts]: Start accepts. Automaton has 14156 states and 20134 transitions. Word has length 179 [2024-11-16 09:14:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:36,395 INFO L471 AbstractCegarLoop]: Abstraction has 14156 states and 20134 transitions. [2024-11-16 09:14:36,395 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 09:14:36,396 INFO L276 IsEmpty]: Start isEmpty. Operand 14156 states and 20134 transitions. [2024-11-16 09:14:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:14:36,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:36,428 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 09:14:36,446 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 09:14:36,629 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 09:14:36,629 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:36,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:36,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2146871685, now seen corresponding path program 1 times [2024-11-16 09:14:36,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:36,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107401314] [2024-11-16 09:14:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:36,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:14:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:14:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:14:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:14:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,792 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 09:14:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107401314] [2024-11-16 09:14:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107401314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672405768] [2024-11-16 09:14:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:36,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:36,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:36,794 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 09:14:36,795 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 09:14:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:36,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:36,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:36,950 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 09:14:36,950 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:36,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672405768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:36,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:36,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845491785] [2024-11-16 09:14:36,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:36,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:36,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:36,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:36,952 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 09:14:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:37,672 INFO L93 Difference]: Finished difference Result 27333 states and 38190 transitions. [2024-11-16 09:14:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:37,672 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 09:14:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:37,731 INFO L225 Difference]: With dead ends: 27333 [2024-11-16 09:14:37,731 INFO L226 Difference]: Without dead ends: 15322 [2024-11-16 09:14:37,760 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 09:14:37,761 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 09:14:37,761 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 09:14:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2024-11-16 09:14:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 15322. [2024-11-16 09:14:38,373 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 09:14:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15322 states to 15322 states and 21278 transitions. [2024-11-16 09:14:38,431 INFO L78 Accepts]: Start accepts. Automaton has 15322 states and 21278 transitions. Word has length 179 [2024-11-16 09:14:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:38,431 INFO L471 AbstractCegarLoop]: Abstraction has 15322 states and 21278 transitions. [2024-11-16 09:14:38,432 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 09:14:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15322 states and 21278 transitions. [2024-11-16 09:14:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:14:38,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:38,461 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 09:14:38,485 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 09:14:38,662 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 09:14:38,663 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:38,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1991707905, now seen corresponding path program 1 times [2024-11-16 09:14:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740051838] [2024-11-16 09:14:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:14:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:14:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:14:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:14:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,827 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 09:14:38,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:38,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740051838] [2024-11-16 09:14:38,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740051838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:38,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229770923] [2024-11-16 09:14:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:38,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:38,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:38,830 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 09:14:38,832 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 09:14:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:38,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:14:38,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:38,999 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 09:14:39,000 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229770923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:39,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:39,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995449222] [2024-11-16 09:14:39,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:39,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:39,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:39,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:39,003 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 09:14:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:40,176 INFO L93 Difference]: Finished difference Result 26504 states and 35916 transitions. [2024-11-16 09:14:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:40,177 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 09:14:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:40,249 INFO L225 Difference]: With dead ends: 26504 [2024-11-16 09:14:40,250 INFO L226 Difference]: Without dead ends: 16134 [2024-11-16 09:14:40,279 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 09:14:40,280 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 09:14:40,281 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 09:14:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2024-11-16 09:14:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 15218. [2024-11-16 09:14:41,315 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 09:14:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15218 states to 15218 states and 20966 transitions. [2024-11-16 09:14:41,379 INFO L78 Accepts]: Start accepts. Automaton has 15218 states and 20966 transitions. Word has length 179 [2024-11-16 09:14:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:41,380 INFO L471 AbstractCegarLoop]: Abstraction has 15218 states and 20966 transitions. [2024-11-16 09:14:41,380 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 09:14:41,381 INFO L276 IsEmpty]: Start isEmpty. Operand 15218 states and 20966 transitions. [2024-11-16 09:14:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:14:41,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:41,405 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 09:14:41,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 09:14:41,606 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 09:14:41,607 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:41,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash -426914675, now seen corresponding path program 1 times [2024-11-16 09:14:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:41,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314193946] [2024-11-16 09:14:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:41,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:14:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:14:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 09:14:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:14:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,746 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 09:14:41,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:41,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314193946] [2024-11-16 09:14:41,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314193946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:41,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679014482] [2024-11-16 09:14:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:41,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:41,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:41,749 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 09:14:41,750 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 09:14:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:41,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:41,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:41,892 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 09:14:41,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679014482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:41,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:41,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374438848] [2024-11-16 09:14:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:41,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:41,896 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 09:14:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:42,848 INFO L93 Difference]: Finished difference Result 40534 states and 54296 transitions. [2024-11-16 09:14:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:42,849 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 09:14:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:42,948 INFO L225 Difference]: With dead ends: 40534 [2024-11-16 09:14:42,948 INFO L226 Difference]: Without dead ends: 27461 [2024-11-16 09:14:42,979 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 09:14:42,981 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 09:14:42,981 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 09:14:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27461 states. [2024-11-16 09:14:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27461 to 27458. [2024-11-16 09:14:44,243 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 09:14:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27458 states to 27458 states and 37028 transitions. [2024-11-16 09:14:44,318 INFO L78 Accepts]: Start accepts. Automaton has 27458 states and 37028 transitions. Word has length 180 [2024-11-16 09:14:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:44,318 INFO L471 AbstractCegarLoop]: Abstraction has 27458 states and 37028 transitions. [2024-11-16 09:14:44,318 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 09:14:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand 27458 states and 37028 transitions. [2024-11-16 09:14:44,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:14:44,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:44,361 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 09:14:44,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 09:14:44,562 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 09:14:44,563 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:44,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2124510569, now seen corresponding path program 1 times [2024-11-16 09:14:44,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:44,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206700434] [2024-11-16 09:14:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:44,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:14:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:14:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:14:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:14:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,712 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 09:14:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:44,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206700434] [2024-11-16 09:14:44,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206700434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:44,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909182668] [2024-11-16 09:14:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:44,715 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 09:14:44,716 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 09:14:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:44,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:44,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:44,956 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 09:14:44,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:44,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909182668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:44,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:44,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:44,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525480187] [2024-11-16 09:14:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:44,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:44,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:44,958 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 09:14:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:46,149 INFO L93 Difference]: Finished difference Result 45535 states and 61775 transitions. [2024-11-16 09:14:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:46,149 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 09:14:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:46,228 INFO L225 Difference]: With dead ends: 45535 [2024-11-16 09:14:46,228 INFO L226 Difference]: Without dead ends: 23556 [2024-11-16 09:14:46,268 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 09:14:46,269 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 09:14:46,269 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 09:14:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23556 states. [2024-11-16 09:14:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23556 to 23268. [2024-11-16 09:14:47,296 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 09:14:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23268 states to 23268 states and 30814 transitions. [2024-11-16 09:14:47,356 INFO L78 Accepts]: Start accepts. Automaton has 23268 states and 30814 transitions. Word has length 180 [2024-11-16 09:14:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:47,357 INFO L471 AbstractCegarLoop]: Abstraction has 23268 states and 30814 transitions. [2024-11-16 09:14:47,357 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 09:14:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 23268 states and 30814 transitions. [2024-11-16 09:14:47,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:14:47,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:47,382 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 09:14:47,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 09:14:47,582 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 09:14:47,582 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:47,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1943417163, now seen corresponding path program 1 times [2024-11-16 09:14:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:47,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093057789] [2024-11-16 09:14:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:14:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:14:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:14:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:14:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,735 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 09:14:47,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:47,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093057789] [2024-11-16 09:14:47,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093057789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:47,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456935073] [2024-11-16 09:14:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:47,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:47,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:47,737 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 09:14:47,739 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 09:14:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:47,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:14:47,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:48,019 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 09:14:48,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456935073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:48,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:48,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380135462] [2024-11-16 09:14:48,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:48,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:48,025 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 09:14:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:49,911 INFO L93 Difference]: Finished difference Result 62746 states and 81812 transitions. [2024-11-16 09:14:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:49,911 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 09:14:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:50,065 INFO L225 Difference]: With dead ends: 62746 [2024-11-16 09:14:50,065 INFO L226 Difference]: Without dead ends: 41637 [2024-11-16 09:14:50,109 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 09:14:50,110 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 09:14:50,111 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 09:14:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41637 states. [2024-11-16 09:14:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41637 to 41634. [2024-11-16 09:14:52,341 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 09:14:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 54542 transitions. [2024-11-16 09:14:52,446 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 54542 transitions. Word has length 180 [2024-11-16 09:14:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:52,447 INFO L471 AbstractCegarLoop]: Abstraction has 41634 states and 54542 transitions. [2024-11-16 09:14:52,447 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 09:14:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 54542 transitions. [2024-11-16 09:14:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:14:52,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:52,495 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 09:14:52,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 09:14:52,696 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 09:14:52,696 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:52,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2129322849, now seen corresponding path program 1 times [2024-11-16 09:14:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:52,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119451748] [2024-11-16 09:14:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:52,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:52,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:52,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:52,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:14:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:14:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:14:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:14:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,078 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 09:14:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119451748] [2024-11-16 09:14:53,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119451748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285385829] [2024-11-16 09:14:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:53,081 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 09:14:53,082 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 09:14:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:53,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:14:53,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:53,282 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 09:14:53,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:53,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285385829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:53,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:53,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429643862] [2024-11-16 09:14:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:53,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:53,285 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 09:14:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:14:55,179 INFO L93 Difference]: Finished difference Result 74526 states and 96784 transitions. [2024-11-16 09:14:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:14:55,179 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 09:14:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:14:55,432 INFO L225 Difference]: With dead ends: 74526 [2024-11-16 09:14:55,432 INFO L226 Difference]: Without dead ends: 42085 [2024-11-16 09:14:55,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 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 09:14:55,492 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 09:14:55,493 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 09:14:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42085 states. [2024-11-16 09:14:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42085 to 41634. [2024-11-16 09:14:57,952 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 09:14:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 54290 transitions. [2024-11-16 09:14:58,059 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 54290 transitions. Word has length 181 [2024-11-16 09:14:58,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:14:58,060 INFO L471 AbstractCegarLoop]: Abstraction has 41634 states and 54290 transitions. [2024-11-16 09:14:58,060 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 09:14:58,060 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 54290 transitions. [2024-11-16 09:14:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:14:58,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:14:58,086 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 09:14:58,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 09:14:58,286 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 09:14:58,287 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:14:58,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:14:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash 275329689, now seen corresponding path program 1 times [2024-11-16 09:14:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:14:58,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509170207] [2024-11-16 09:14:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:14:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:14:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:14:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:14:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:14:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:14:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:14:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:14:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-16 09:14:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:14:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:14:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,425 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 09:14:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:14:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509170207] [2024-11-16 09:14:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509170207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:14:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620026201] [2024-11-16 09:14:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:14:58,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:14:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:14:58,428 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 09:14:58,429 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 09:14:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:14:58,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:14:58,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:14:58,597 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 09:14:58,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:14:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620026201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:14:58,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:14:58,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:14:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954782570] [2024-11-16 09:14:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:14:58,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:14:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:14:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:14:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:14:58,600 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 09:15:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:15:00,810 INFO L93 Difference]: Finished difference Result 74810 states and 96746 transitions. [2024-11-16 09:15:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:15:00,811 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 09:15:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:15:00,950 INFO L225 Difference]: With dead ends: 74810 [2024-11-16 09:15:00,950 INFO L226 Difference]: Without dead ends: 42369 [2024-11-16 09:15:01,012 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 09:15:01,012 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 09:15:01,012 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 09:15:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42369 states. [2024-11-16 09:15:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42369 to 41550. [2024-11-16 09:15:03,701 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 09:15:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41550 states to 41550 states and 53954 transitions. [2024-11-16 09:15:03,812 INFO L78 Accepts]: Start accepts. Automaton has 41550 states and 53954 transitions. Word has length 181 [2024-11-16 09:15:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:15:03,813 INFO L471 AbstractCegarLoop]: Abstraction has 41550 states and 53954 transitions. [2024-11-16 09:15:03,813 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 09:15:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 41550 states and 53954 transitions. [2024-11-16 09:15:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:15:03,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:15:03,851 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 09:15:03,867 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 09:15:04,051 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 09:15:04,052 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:15:04,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:15:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1477694369, now seen corresponding path program 1 times [2024-11-16 09:15:04,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:15:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031665809] [2024-11-16 09:15:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:15:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:15:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:15:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:15:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:15:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:15:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:15:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:15:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:15:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:15:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:15:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:15:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:15:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:15:04,138 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 09:15:04,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:15:04,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031665809] [2024-11-16 09:15:04,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031665809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:15:04,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:15:04,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:15:04,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135892403] [2024-11-16 09:15:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:15:04,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:15:04,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:15:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:15:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:15:04,140 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)