./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/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-dev-4a390ef-m [2024-10-23 23:36:26,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 23:36:26,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 23:36:26,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 23:36:26,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 23:36:26,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 23:36:26,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 23:36:26,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 23:36:26,795 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 23:36:26,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 23:36:26,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 23:36:26,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 23:36:26,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 23:36:26,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 23:36:26,799 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 23:36:26,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 23:36:26,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 23:36:26,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 23:36:26,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 23:36:26,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 23:36:26,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 23:36:26,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 23:36:26,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 23:36:26,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 23:36:26,801 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 23:36:26,801 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 23:36:26,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 23:36:26,801 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 23:36:26,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 23:36:26,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 23:36:26,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:36:26,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 23:36:26,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 23:36:26,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 23:36:26,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 23:36:26,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2024-10-23 23:36:26,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 23:36:26,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 23:36:26,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 23:36:27,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 23:36:27,001 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 23:36:27,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2024-10-23 23:36:28,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 23:36:28,382 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 23:36:28,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2024-10-23 23:36:28,399 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc4e50a6/383846f10e374b53a198dbb0942e7689/FLAGb1b47b8a7 [2024-10-23 23:36:28,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc4e50a6/383846f10e374b53a198dbb0942e7689 [2024-10-23 23:36:28,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 23:36:28,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 23:36:28,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 23:36:28,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 23:36:28,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 23:36:28,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fdfa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28, skipping insertion in model container [2024-10-23 23:36:28,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 23:36:28,697 WARN L248 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] [2024-10-23 23:36:28,702 WARN L248 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] [2024-10-23 23:36:28,704 WARN L248 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] [2024-10-23 23:36:28,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:36:28,724 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 23:36:28,772 WARN L248 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] [2024-10-23 23:36:28,775 WARN L248 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] [2024-10-23 23:36:28,775 WARN L248 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] [2024-10-23 23:36:28,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:36:28,812 INFO L204 MainTranslator]: Completed translation [2024-10-23 23:36:28,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28 WrapperNode [2024-10-23 23:36:28,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 23:36:28,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 23:36:28,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 23:36:28,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 23:36:28,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,846 INFO L138 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 187 [2024-10-23 23:36:28,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 23:36:28,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 23:36:28,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 23:36:28,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 23:36:28,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,864 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,897 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]. [2024-10-23 23:36:28,898 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 23:36:28,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 23:36:28,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 23:36:28,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 23:36:28,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (1/1) ... [2024-10-23 23:36:28,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:36:28,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:36:28,947 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) [2024-10-23 23:36:28,948 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 [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-10-23 23:36:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2024-10-23 23:36:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-10-23 23:36:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-10-23 23:36:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-10-23 23:36:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-10-23 23:36:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-10-23 23:36:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 23:36:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 23:36:29,091 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 23:36:29,092 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 23:36:29,339 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-10-23 23:36:29,339 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 23:36:29,384 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 23:36:29,385 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-23 23:36:29,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:36:29 BoogieIcfgContainer [2024-10-23 23:36:29,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 23:36:29,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 23:36:29,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 23:36:29,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 23:36:29,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:36:28" (1/3) ... [2024-10-23 23:36:29,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5980054a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:36:29, skipping insertion in model container [2024-10-23 23:36:29,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:36:28" (2/3) ... [2024-10-23 23:36:29,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5980054a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:36:29, skipping insertion in model container [2024-10-23 23:36:29,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:36:29" (3/3) ... [2024-10-23 23:36:29,393 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2024-10-23 23:36:29,406 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 23:36:29,407 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-23 23:36:29,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 23:36:29,456 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;@44e460c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 23:36:29,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-23 23:36:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 46 states have internal predecessors, (63), 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) [2024-10-23 23:36:29,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 23:36:29,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:36:29,466 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:36:29,466 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:36:29,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:36:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash -196891397, now seen corresponding path program 1 times [2024-10-23 23:36:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:36:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052584695] [2024-10-23 23:36:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:36:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:36:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052584695] [2024-10-23 23:36:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052584695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:36:29,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:36:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 23:36:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029007281] [2024-10-23 23:36:29,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:36:29,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 23:36:29,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:36:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 23:36:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 23:36:29,631 INFO L87 Difference]: Start difference. First operand has 62 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 46 states have internal predecessors, (63), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-10-23 23:36:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:36:29,712 INFO L93 Difference]: Finished difference Result 123 states and 170 transitions. [2024-10-23 23:36:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 23:36:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-10-23 23:36:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:36:29,722 INFO L225 Difference]: With dead ends: 123 [2024-10-23 23:36:29,722 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 23:36:29,726 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 [2024-10-23 23:36:29,730 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:36:29,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 23:36:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 23:36:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 23:36:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 44 states have internal predecessors, (52), 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) [2024-10-23 23:36:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-10-23 23:36:29,761 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 9 [2024-10-23 23:36:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:36:29,761 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-10-23 23:36:29,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-10-23 23:36:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-10-23 23:36:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 23:36:29,763 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:36:29,763 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:36:29,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 23:36:29,764 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:36:29,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:36:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1391079186, now seen corresponding path program 1 times [2024-10-23 23:36:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:36:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983146805] [2024-10-23 23:36:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:36:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:29,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:36:29,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983146805] [2024-10-23 23:36:29,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983146805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:36:29,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:36:29,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:36:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152532225] [2024-10-23 23:36:29,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:36:29,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:36:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:36:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:36:29,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 23:36:29,907 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-23 23:36:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:36:30,038 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-10-23 23:36:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:36:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-10-23 23:36:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:36:30,045 INFO L225 Difference]: With dead ends: 110 [2024-10-23 23:36:30,045 INFO L226 Difference]: Without dead ends: 106 [2024-10-23 23:36:30,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 23:36:30,047 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 50 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:36:30,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 142 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:36:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-23 23:36:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2024-10-23 23:36:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 65 states have internal predecessors, (80), 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) [2024-10-23 23:36:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2024-10-23 23:36:30,060 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 9 [2024-10-23 23:36:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:36:30,061 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2024-10-23 23:36:30,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-23 23:36:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2024-10-23 23:36:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-23 23:36:30,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:36:30,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:36:30,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 23:36:30,062 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:36:30,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:36:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1792827328, now seen corresponding path program 1 times [2024-10-23 23:36:30,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:36:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566023252] [2024-10-23 23:36:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:36:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:30,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-23 23:36:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:30,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:36:30,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566023252] [2024-10-23 23:36:30,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566023252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:36:30,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:36:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 23:36:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004231098] [2024-10-23 23:36:30,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:36:30,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:36:30,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:36:30,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:36:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 23:36:30,191 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-10-23 23:36:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:36:30,309 INFO L93 Difference]: Finished difference Result 148 states and 181 transitions. [2024-10-23 23:36:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:36:30,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2024-10-23 23:36:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:36:30,311 INFO L225 Difference]: With dead ends: 148 [2024-10-23 23:36:30,312 INFO L226 Difference]: Without dead ends: 71 [2024-10-23 23:36:30,312 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 [2024-10-23 23:36:30,315 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:36:30,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 151 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:36:30,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-23 23:36:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-10-23 23:36:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 49 states have internal predecessors, (56), 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) [2024-10-23 23:36:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-10-23 23:36:30,326 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 13 [2024-10-23 23:36:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:36:30,327 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-10-23 23:36:30,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-10-23 23:36:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-10-23 23:36:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-23 23:36:30,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:36:30,329 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] [2024-10-23 23:36:30,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 23:36:30,329 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:36:30,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:36:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1995733173, now seen corresponding path program 1 times [2024-10-23 23:36:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:36:30,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524848659] [2024-10-23 23:36:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:36:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:30,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:36:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:30,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:36:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:30,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 23:36:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:30,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:36:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524848659] [2024-10-23 23:36:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524848659] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:36:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800312813] [2024-10-23 23:36:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:30,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:36:30,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:36:30,955 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) [2024-10-23 23:36:30,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 23:36:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:31,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-23 23:36:31,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:36:31,206 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-23 23:36:31,207 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 [2024-10-23 23:36:31,326 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 29 treesize of output 37 [2024-10-23 23:36:31,345 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 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-23 23:36:31,363 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 24 treesize of output 32 [2024-10-23 23:36:31,371 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 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-23 23:36:31,383 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 31 treesize of output 39 [2024-10-23 23:36:31,393 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 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-23 23:36:31,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 44 [2024-10-23 23:36:31,419 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 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-23 23:36:31,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:36:31,444 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-10-23 23:36:31,446 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 [2024-10-23 23:36:31,671 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 [2024-10-23 23:36:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:31,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:36:31,902 INFO L349 Elim1Store]: treesize reduction 17, result has 64.6 percent of original size [2024-10-23 23:36:31,903 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 2 case distinctions, treesize of input 394 treesize of output 337 [2024-10-23 23:36:31,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 23:36:31,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 231 [2024-10-23 23:36:31,929 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 248 treesize of output 236 [2024-10-23 23:36:31,941 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 196 treesize of output 194 [2024-10-23 23:36:32,041 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 [2024-10-23 23:36:32,115 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-23 23:36:32,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:36:32,119 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-10-23 23:36:32,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 24 treesize of output 1 [2024-10-23 23:36:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:32,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800312813] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:36:32,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:36:32,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2024-10-23 23:36:32,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532109465] [2024-10-23 23:36:32,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:36:32,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-23 23:36:32,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:36:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-23 23:36:32,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2024-10-23 23:36:32,229 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 32 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 24 states have internal predecessors, (37), 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) [2024-10-23 23:36:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:36:33,563 INFO L93 Difference]: Finished difference Result 152 states and 182 transitions. [2024-10-23 23:36:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-23 23:36:33,564 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 24 states have internal predecessors, (37), 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 24 [2024-10-23 23:36:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:36:33,565 INFO L225 Difference]: With dead ends: 152 [2024-10-23 23:36:33,565 INFO L226 Difference]: Without dead ends: 126 [2024-10-23 23:36:33,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=347, Invalid=2305, Unknown=0, NotChecked=0, Total=2652 [2024-10-23 23:36:33,569 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 441 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 23:36:33,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 546 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 23:36:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-23 23:36:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 103. [2024-10-23 23:36:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 79 states have internal predecessors, (94), 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) [2024-10-23 23:36:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2024-10-23 23:36:33,586 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 24 [2024-10-23 23:36:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:36:33,587 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2024-10-23 23:36:33,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 24 states have internal predecessors, (37), 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) [2024-10-23 23:36:33,587 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2024-10-23 23:36:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 23:36:33,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:36:33,588 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] [2024-10-23 23:36:33,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 23:36:33,788 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 [2024-10-23 23:36:33,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:36:33,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:36:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1375980551, now seen corresponding path program 1 times [2024-10-23 23:36:33,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:36:33,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464454864] [2024-10-23 23:36:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:33,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:36:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:33,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:36:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:33,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:36:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:33,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 23:36:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:33,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 23:36:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:36:33,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:36:33,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464454864] [2024-10-23 23:36:33,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464454864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:36:33,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:36:33,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 23:36:33,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634545530] [2024-10-23 23:36:33,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:36:33,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 23:36:33,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:36:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 23:36:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:36:33,876 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-10-23 23:36:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:36:34,030 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2024-10-23 23:36:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-23 23:36:34,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 28 [2024-10-23 23:36:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:36:34,032 INFO L225 Difference]: With dead ends: 115 [2024-10-23 23:36:34,032 INFO L226 Difference]: Without dead ends: 113 [2024-10-23 23:36:34,032 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 [2024-10-23 23:36:34,033 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 24 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:36:34,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 181 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:36:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-23 23:36:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2024-10-23 23:36:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 80 states have (on average 1.25) internal successors, (100), 85 states have internal predecessors, (100), 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) [2024-10-23 23:36:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2024-10-23 23:36:34,051 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 28 [2024-10-23 23:36:34,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:36:34,051 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2024-10-23 23:36:34,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-10-23 23:36:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2024-10-23 23:36:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 23:36:34,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:36:34,052 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] [2024-10-23 23:36:34,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 23:36:34,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:36:34,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:36:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1344383440, now seen corresponding path program 1 times [2024-10-23 23:36:34,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:36:34,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599804677] [2024-10-23 23:36:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:36:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:34,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:36:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:34,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:36:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:35,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 23:36:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:36,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 23:36:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:36:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599804677] [2024-10-23 23:36:36,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599804677] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:36:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015984730] [2024-10-23 23:36:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:36:36,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:36:36,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:36:36,097 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) [2024-10-23 23:36:36,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 23:36:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:36:36,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-10-23 23:36:36,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:36:36,474 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-23 23:36:36,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-23 23:36:41,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:36:41,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2024-10-23 23:36:41,229 INFO L349 Elim1Store]: treesize reduction 98, result has 15.5 percent of original size [2024-10-23 23:36:41,229 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 125 [2024-10-23 23:36:41,278 INFO L349 Elim1Store]: treesize reduction 87, result has 29.8 percent of original size [2024-10-23 23:36:41,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 109 [2024-10-23 23:36:41,318 INFO L349 Elim1Store]: treesize reduction 60, result has 27.7 percent of original size [2024-10-23 23:36:41,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 141 treesize of output 129 [2024-10-23 23:36:41,450 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 66 treesize of output 36 [2024-10-23 23:36:41,465 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 31 treesize of output 23 [2024-10-23 23:36:41,484 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 31 treesize of output 23 [2024-10-23 23:36:41,495 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 49 treesize of output 25 [2024-10-23 23:36:41,513 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-23 23:36:41,514 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 180 [2024-10-23 23:36:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:36:42,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:36:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015984730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:36:51,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:36:51,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-10-23 23:36:51,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811253441] [2024-10-23 23:36:51,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-23 23:36:51,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-23 23:36:51,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:36:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-23 23:36:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=829, Unknown=10, NotChecked=0, Total=930 [2024-10-23 23:36:51,449 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 28 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-23 23:36:55,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:36:56,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:37:05,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:37:14,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 23:37:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:37:17,208 INFO L93 Difference]: Finished difference Result 277 states and 350 transitions. [2024-10-23 23:37:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-23 23:37:17,208 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 28 [2024-10-23 23:37:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:37:17,210 INFO L225 Difference]: With dead ends: 277 [2024-10-23 23:37:17,210 INFO L226 Difference]: Without dead ends: 181 [2024-10-23 23:37:17,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=330, Invalid=2738, Unknown=12, NotChecked=0, Total=3080 [2024-10-23 23:37:17,212 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 155 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 68 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:37:17,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 520 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1239 Invalid, 10 Unknown, 0 Unchecked, 17.4s Time] [2024-10-23 23:37:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-23 23:37:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 138. [2024-10-23 23:37:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 105 states have internal predecessors, (123), 20 states have call successors, (20), 13 states have call predecessors, (20), 16 states have return successors, (26), 19 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-23 23:37:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 169 transitions. [2024-10-23 23:37:17,240 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 169 transitions. Word has length 28 [2024-10-23 23:37:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:37:17,242 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 169 transitions. [2024-10-23 23:37:17,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-23 23:37:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 169 transitions. [2024-10-23 23:37:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 23:37:17,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:37:17,243 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 23:37:17,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 23:37:17,443 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,SelfDestructingSolverStorable5 [2024-10-23 23:37:17,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:37:17,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:37:17,445 INFO L85 PathProgramCache]: Analyzing trace with hash -823790839, now seen corresponding path program 2 times [2024-10-23 23:37:17,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:37:17,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123082177] [2024-10-23 23:37:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:37:17,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:37:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:18,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-23 23:37:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:18,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:37:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:18,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 23:37:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:18,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-23 23:37:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:18,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-23 23:37:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:19,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 23:37:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:20,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-23 23:37:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:37:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:37:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:37:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123082177] [2024-10-23 23:37:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123082177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:37:20,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160339020] [2024-10-23 23:37:20,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:37:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:37:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:37:20,199 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) [2024-10-23 23:37:20,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 23:37:20,326 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:37:20,326 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:37:20,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-10-23 23:37:20,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:37:20,634 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-23 23:37:20,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-23 23:37:21,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 59 [2024-10-23 23:37:21,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-10-23 23:37:21,139 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-10-23 23:37:21,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-10-23 23:37:21,181 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 24 treesize of output 24 [2024-10-23 23:37:21,184 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 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-23 23:37:21,189 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-23 23:37:21,919 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-23 23:37:21,920 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 [2024-10-23 23:37:22,659 INFO L349 Elim1Store]: treesize reduction 262, result has 22.3 percent of original size [2024-10-23 23:37:22,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 254 treesize of output 301 [2024-10-23 23:37:22,691 INFO L349 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2024-10-23 23:37:22,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 153 [2024-10-23 23:37:22,703 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 131 [2024-10-23 23:37:22,736 INFO L349 Elim1Store]: treesize reduction 104, result has 4.6 percent of original size [2024-10-23 23:37:22,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 114 [2024-10-23 23:37:22,922 INFO L349 Elim1Store]: treesize reduction 422, result has 19.6 percent of original size [2024-10-23 23:37:22,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 253 treesize of output 358 [2024-10-23 23:37:23,749 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 130 treesize of output 118 [2024-10-23 23:37:23,818 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 349 treesize of output 327 [2024-10-23 23:37:24,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:24,539 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 6 treesize of output 1 [2024-10-23 23:37:24,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:24,577 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 6 treesize of output 1 [2024-10-23 23:37:24,719 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 469 treesize of output 453 [2024-10-23 23:37:29,788 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-10-23 23:37:29,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 17 [2024-10-23 23:37:29,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:29,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:29,857 INFO L349 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2024-10-23 23:37:29,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 59 [2024-10-23 23:37:29,990 INFO L349 Elim1Store]: treesize reduction 85, result has 21.3 percent of original size [2024-10-23 23:37:29,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 84 [2024-10-23 23:37:30,177 INFO L349 Elim1Store]: treesize reduction 83, result has 20.2 percent of original size [2024-10-23 23:37:30,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 74 [2024-10-23 23:37:30,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:30,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:30,378 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2024-10-23 23:37:30,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 56 [2024-10-23 23:37:30,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:30,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 23:37:30,578 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2024-10-23 23:37:30,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 49 [2024-10-23 23:37:30,635 INFO L349 Elim1Store]: treesize reduction 85, result has 21.3 percent of original size [2024-10-23 23:37:30,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 75 [2024-10-23 23:37:30,990 INFO L349 Elim1Store]: treesize reduction 30, result has 43.4 percent of original size [2024-10-23 23:37:30,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 136 [2024-10-23 23:37:31,479 INFO L349 Elim1Store]: treesize reduction 366, result has 22.1 percent of original size [2024-10-23 23:37:31,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 221 treesize of output 488 [2024-10-23 23:37:37,853 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-23 23:37:37,875 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-10-23 23:37:37,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 12 [2024-10-23 23:37:38,914 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-23 23:37:38,953 INFO L349 Elim1Store]: treesize reduction 61, result has 18.7 percent of original size [2024-10-23 23:37:38,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 33 [2024-10-23 23:37:39,052 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-23 23:37:39,079 INFO L349 Elim1Store]: treesize reduction 62, result has 17.3 percent of original size [2024-10-23 23:37:39,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 30 [2024-10-23 23:37:47,504 INFO L349 Elim1Store]: treesize reduction 221, result has 8.7 percent of original size [2024-10-23 23:37:47,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 199 treesize of output 210 [2024-10-23 23:37:50,236 INFO L349 Elim1Store]: treesize reduction 1079, result has 16.8 percent of original size [2024-10-23 23:37:50,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 47 case distinctions, treesize of input 751 treesize of output 1123