./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i --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/ldv-sets/test_mutex_unbounded-2.i -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 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:28:05,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:28:05,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:28:05,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:28:05,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:28:05,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:28:05,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:28:05,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:28:05,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:28:05,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:28:05,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:28:05,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:28:05,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:28:05,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:28:05,855 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:28:05,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:28:05,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:28:05,856 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:28:05,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:28:05,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:28:05,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:28:05,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:28:05,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:28:05,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:28:05,859 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:28:05,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:28:05,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:28:05,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:28:05,860 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:28:05,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:28:05,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:28:05,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:28:05,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:28:05,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:28:05,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:28:05,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:28:05,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:28:05,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:28:05,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:28:05,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:28:05,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:28:05,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:28:05,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2024-11-16 06:28:06,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:28:06,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:28:06,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:28:06,081 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:28:06,085 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:28:06,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2024-11-16 06:28:07,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:28:07,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:28:07,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2024-11-16 06:28:07,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31847e0f5/2689f81ed34942e7ba6188f219bd6206/FLAGf13e4fe82 [2024-11-16 06:28:08,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31847e0f5/2689f81ed34942e7ba6188f219bd6206 [2024-11-16 06:28:08,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:28:08,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:28:08,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:28:08,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:28:08,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:28:08,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c8754d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08, skipping insertion in model container [2024-11-16 06:28:08,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:28:08,812 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/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2024-11-16 06:28:08,823 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/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2024-11-16 06:28:08,824 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/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2024-11-16 06:28:08,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:28:08,837 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:28:08,889 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/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2024-11-16 06:28:08,890 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/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2024-11-16 06:28:08,891 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/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2024-11-16 06:28:08,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:28:08,932 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:28:08,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08 WrapperNode [2024-11-16 06:28:08,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:28:08,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:28:08,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:28:08,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:28:08,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,978 INFO L138 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 183 [2024-11-16 06:28:08,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:28:08,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:28:08,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:28:08,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:28:08,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,027 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 7 writes are split as follows [0, 7]. [2024-11-16 06:28:09,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,039 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:28:09,051 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:28:09,053 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:28:09,053 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:28:09,054 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:09,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:28:09,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:28:09,090 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 06:28:09,092 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 06:28:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-16 06:28:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-16 06:28:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2024-11-16 06:28:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2024-11-16 06:28:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 06:28:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:28:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 06:28:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-16 06:28:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-11-16 06:28:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:28:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:28:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-11-16 06:28:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-11-16 06:28:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:28:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:28:09,269 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:28:09,271 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:28:09,476 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L667: havoc ldv_set_empty_#t~ret31#1; [2024-11-16 06:28:09,480 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L624: havoc ldv_list_empty_#t~mem10#1.base, ldv_list_empty_#t~mem10#1.offset; [2024-11-16 06:28:09,528 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-16 06:28:09,528 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:28:09,541 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:28:09,542 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:28:09,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:28:09 BoogieIcfgContainer [2024-11-16 06:28:09,543 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:28:09,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:28:09,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:28:09,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:28:09,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:28:08" (1/3) ... [2024-11-16 06:28:09,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2917625c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:28:09, skipping insertion in model container [2024-11-16 06:28:09,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (2/3) ... [2024-11-16 06:28:09,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2917625c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:28:09, skipping insertion in model container [2024-11-16 06:28:09,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:28:09" (3/3) ... [2024-11-16 06:28:09,552 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2024-11-16 06:28:09,567 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:28:09,567 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-16 06:28:09,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:28:09,627 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;@787ffbc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:28:09,628 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 06:28:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 68 states have internal predecessors, (85), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 06:28:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 06:28:09,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:09,640 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:28:09,641 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:09,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:09,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1776360260, now seen corresponding path program 1 times [2024-11-16 06:28:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:09,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817341994] [2024-11-16 06:28:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,803 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 06:28:09,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:09,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817341994] [2024-11-16 06:28:09,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817341994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:28:09,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:28:09,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:28:09,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543064783] [2024-11-16 06:28:09,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:28:09,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:28:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:28:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:28:09,835 INFO L87 Difference]: Start difference. First operand has 84 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 68 states have internal predecessors, (85), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:28:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:09,858 INFO L93 Difference]: Finished difference Result 162 states and 209 transitions. [2024-11-16 06:28:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:28:09,860 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 06:28:09,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:09,866 INFO L225 Difference]: With dead ends: 162 [2024-11-16 06:28:09,867 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 06:28:09,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:28:09,872 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:09,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:28:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 06:28:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-16 06:28:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 06:28:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2024-11-16 06:28:09,914 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 13 [2024-11-16 06:28:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:09,915 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2024-11-16 06:28:09,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:28:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2024-11-16 06:28:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:28:09,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:09,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:28:09,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:28:09,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:09,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1005450745, now seen corresponding path program 1 times [2024-11-16 06:28:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024704356] [2024-11-16 06:28:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:10,350 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 06:28:10,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:10,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024704356] [2024-11-16 06:28:10,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024704356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:28:10,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:28:10,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:28:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460733737] [2024-11-16 06:28:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:28:10,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:28:10,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:28:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:28:10,353 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:28:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:10,533 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2024-11-16 06:28:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:28:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 06:28:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:10,540 INFO L225 Difference]: With dead ends: 136 [2024-11-16 06:28:10,540 INFO L226 Difference]: Without dead ends: 130 [2024-11-16 06:28:10,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:28:10,541 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 57 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:10,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 337 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:28:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-16 06:28:10,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 106. [2024-11-16 06:28:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 87 states have internal predecessors, (102), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 06:28:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2024-11-16 06:28:10,569 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 16 [2024-11-16 06:28:10,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:10,569 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2024-11-16 06:28:10,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:28:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2024-11-16 06:28:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:28:10,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:10,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:28:10,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:28:10,571 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:10,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1972767455, now seen corresponding path program 1 times [2024-11-16 06:28:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:10,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778353368] [2024-11-16 06:28:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:10,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 06:28:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:10,659 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 06:28:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778353368] [2024-11-16 06:28:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778353368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:28:10,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:28:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:28:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776941218] [2024-11-16 06:28:10,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:28:10,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:28:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:28:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:28:10,663 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:28:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:10,782 INFO L93 Difference]: Finished difference Result 185 states and 218 transitions. [2024-11-16 06:28:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:28:10,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-16 06:28:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:10,783 INFO L225 Difference]: With dead ends: 185 [2024-11-16 06:28:10,783 INFO L226 Difference]: Without dead ends: 89 [2024-11-16 06:28:10,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:28:10,784 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 17 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:10,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 216 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:28:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-16 06:28:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2024-11-16 06:28:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 64 states have (on average 1.15625) internal successors, (74), 67 states have internal predecessors, (74), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 06:28:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2024-11-16 06:28:10,797 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 18 [2024-11-16 06:28:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:10,798 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2024-11-16 06:28:10,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:28:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2024-11-16 06:28:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 06:28:10,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:10,799 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 06:28:10,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:28:10,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:10,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1060217284, now seen corresponding path program 1 times [2024-11-16 06:28:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549027891] [2024-11-16 06:28:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:11,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 06:28:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:11,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 06:28:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:11,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:28:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:28:11,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:11,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549027891] [2024-11-16 06:28:11,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549027891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:28:11,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509147275] [2024-11-16 06:28:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:11,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:28:11,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:28:11,337 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 06:28:11,340 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 06:28:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:11,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 06:28:11,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:28:11,589 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 06:28:11,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-16 06:28:11,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 42 [2024-11-16 06:28:11,728 INFO L349 Elim1Store]: treesize reduction 44, result has 29.0 percent of original size [2024-11-16 06:28:11,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2024-11-16 06:28:11,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2024-11-16 06:28:11,750 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2024-11-16 06:28:11,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 35 [2024-11-16 06:28:11,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2024-11-16 06:28:11,803 INFO L349 Elim1Store]: treesize reduction 44, result has 29.0 percent of original size [2024-11-16 06:28:11,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2024-11-16 06:28:11,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2024-11-16 06:28:11,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-16 06:28:11,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-16 06:28:11,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2024-11-16 06:28:11,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2024-11-16 06:28:11,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-11-16 06:28:11,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 50 [2024-11-16 06:28:11,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 34 [2024-11-16 06:28:11,877 INFO L349 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2024-11-16 06:28:11,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 1 [2024-11-16 06:28:11,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-11-16 06:28:11,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2024-11-16 06:28:11,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 52 [2024-11-16 06:28:11,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2024-11-16 06:28:12,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-16 06:28:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:28:12,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:28:12,380 INFO L349 Elim1Store]: treesize reduction 125, result has 41.9 percent of original size [2024-11-16 06:28:12,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 554 treesize of output 372 [2024-11-16 06:28:12,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 132 [2024-11-16 06:28:12,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:28:12,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 216 [2024-11-16 06:28:12,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 122 [2024-11-16 06:28:12,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-16 06:28:12,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 06:28:12,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-16 06:28:12,738 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-16 06:28:12,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:28:12,746 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2024-11-16 06:28:12,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2024-11-16 06:28:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:28:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509147275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:28:12,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:28:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2024-11-16 06:28:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127684534] [2024-11-16 06:28:12,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:28:12,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 06:28:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 06:28:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2024-11-16 06:28:12,892 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 32 states, 27 states have (on average 2.185185185185185) internal successors, (59), 24 states have internal predecessors, (59), 7 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 06:28:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:13,998 INFO L93 Difference]: Finished difference Result 191 states and 221 transitions. [2024-11-16 06:28:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 06:28:13,999 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 2.185185185185185) internal successors, (59), 24 states have internal predecessors, (59), 7 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 35 [2024-11-16 06:28:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:14,000 INFO L225 Difference]: With dead ends: 191 [2024-11-16 06:28:14,000 INFO L226 Difference]: Without dead ends: 157 [2024-11-16 06:28:14,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=347, Invalid=2305, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 06:28:14,002 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 294 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:14,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 903 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 06:28:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-16 06:28:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 130. [2024-11-16 06:28:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.198019801980198) internal successors, (121), 106 states have internal predecessors, (121), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 06:28:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-11-16 06:28:14,013 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 35 [2024-11-16 06:28:14,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:14,013 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-11-16 06:28:14,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 2.185185185185185) internal successors, (59), 24 states have internal predecessors, (59), 7 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 06:28:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-11-16 06:28:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 06:28:14,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:14,014 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 06:28:14,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:28:14,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:28:14,215 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:14,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:14,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1140682338, now seen corresponding path program 1 times [2024-11-16 06:28:14,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470322898] [2024-11-16 06:28:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:14,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 06:28:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 06:28:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:28:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 06:28:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:28:14,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470322898] [2024-11-16 06:28:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470322898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:28:14,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:28:14,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 06:28:14,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586918807] [2024-11-16 06:28:14,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:28:14,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:28:14,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:28:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:28:14,311 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:28:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:14,451 INFO L93 Difference]: Finished difference Result 142 states and 169 transitions. [2024-11-16 06:28:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:28:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-11-16 06:28:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:14,453 INFO L225 Difference]: With dead ends: 142 [2024-11-16 06:28:14,453 INFO L226 Difference]: Without dead ends: 140 [2024-11-16 06:28:14,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:28:14,454 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 31 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:14,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 251 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:28:14,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-16 06:28:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2024-11-16 06:28:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 112 states have internal predecessors, (127), 16 states have call successors, (16), 10 states have call predecessors, (16), 12 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2024-11-16 06:28:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2024-11-16 06:28:14,465 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 37 [2024-11-16 06:28:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:14,465 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2024-11-16 06:28:14,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:28:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2024-11-16 06:28:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 06:28:14,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:14,466 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 06:28:14,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 06:28:14,467 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:14,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1322019294, now seen corresponding path program 1 times [2024-11-16 06:28:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:14,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382636795] [2024-11-16 06:28:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:14,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 06:28:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 06:28:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:15,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:28:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat