./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.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/uthash-2.0.2/uthash_SAX_test9-2.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 d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:56:41,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:56:41,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:56:41,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:56:41,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:56:41,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:56:41,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:56:41,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:56:41,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:56:41,190 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:56:41,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:56:41,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:56:41,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:56:41,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:56:41,193 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:56:41,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:56:41,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:56:41,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:56:41,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:56:41,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:56:41,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:56:41,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:56:41,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:56:41,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:56:41,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:56:41,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:56:41,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:56:41,199 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:56:41,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:56:41,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:56:41,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:56:41,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:56:41,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:56:41,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:56:41,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:56:41,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:56:41,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:56:41,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:56:41,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:56:41,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:56:41,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:56:41,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:56:41,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2024-10-24 14:56:41,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:56:41,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:56:41,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:56:41,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:56:41,527 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:56:41,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2024-10-24 14:56:43,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:56:43,473 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:56:43,474 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2024-10-24 14:56:43,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be00bc6df/cbf987d4258243df978fe05132596307/FLAG7707eb29f [2024-10-24 14:56:43,521 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be00bc6df/cbf987d4258243df978fe05132596307 [2024-10-24 14:56:43,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:56:43,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:56:43,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:56:43,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:56:43,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:56:43,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:56:43" (1/1) ... [2024-10-24 14:56:43,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:43, skipping insertion in model container [2024-10-24 14:56:43,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:56:43" (1/1) ... [2024-10-24 14:56:43,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:56:44,019 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/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2024-10-24 14:56:44,270 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/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2024-10-24 14:56:44,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:56:44,296 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:56:44,353 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/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2024-10-24 14:56:44,462 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/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2024-10-24 14:56:44,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:56:44,521 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:56:44,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44 WrapperNode [2024-10-24 14:56:44,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:56:44,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:56:44,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:56:44,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:56:44,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,727 INFO L138 Inliner]: procedures = 177, calls = 773, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3448 [2024-10-24 14:56:44,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:56:44,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:56:44,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:56:44,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:56:44,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,867 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [34, 2, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [4, 0, 50]. [2024-10-24 14:56:44,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:44,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:45,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:56:45,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:56:45,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:56:45,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:56:45,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (1/1) ... [2024-10-24 14:56:45,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:56:45,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:56:45,060 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) [2024-10-24 14:56:45,064 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 [2024-10-24 14:56:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:56:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:56:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:56:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:56:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:56:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:56:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:56:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:56:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:56:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:56:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:56:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:56:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:56:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:56:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:56:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:56:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:56:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:56:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:56:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:56:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:56:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:56:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:56:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:56:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:56:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:56:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:56:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:56:45,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:56:45,389 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:56:45,391 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:56:48,114 INFO L? ?]: Removed 824 outVars from TransFormulas that were not future-live. [2024-10-24 14:56:48,115 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:56:48,191 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:56:48,192 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-24 14:56:48,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:56:48 BoogieIcfgContainer [2024-10-24 14:56:48,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:56:48,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:56:48,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:56:48,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:56:48,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:56:43" (1/3) ... [2024-10-24 14:56:48,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31349fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:56:48, skipping insertion in model container [2024-10-24 14:56:48,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:56:44" (2/3) ... [2024-10-24 14:56:48,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31349fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:56:48, skipping insertion in model container [2024-10-24 14:56:48,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:56:48" (3/3) ... [2024-10-24 14:56:48,202 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-2.i [2024-10-24 14:56:48,218 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:56:48,219 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 14:56:48,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:56:48,350 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;@1317b3e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:56:48,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 14:56:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 1400 states, 892 states have (on average 1.836322869955157) internal successors, (1638), 1394 states have internal predecessors, (1638), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:56:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 14:56:48,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:56:48,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:56:48,367 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:56:48,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:56:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1216099773, now seen corresponding path program 1 times [2024-10-24 14:56:48,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:56:48,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523803946] [2024-10-24 14:56:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:56:48,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:56:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:56:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:56:48,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523803946] [2024-10-24 14:56:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523803946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:56:48,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:56:48,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:56:48,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628667732] [2024-10-24 14:56:48,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:56:48,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:56:48,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:56:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:56:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:56:48,630 INFO L87 Difference]: Start difference. First operand has 1400 states, 892 states have (on average 1.836322869955157) internal successors, (1638), 1394 states have internal predecessors, (1638), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:56:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:56:48,842 INFO L93 Difference]: Finished difference Result 2799 states and 5787 transitions. [2024-10-24 14:56:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:56:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-24 14:56:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:56:48,891 INFO L225 Difference]: With dead ends: 2799 [2024-10-24 14:56:48,892 INFO L226 Difference]: Without dead ends: 1364 [2024-10-24 14:56:48,908 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 [2024-10-24 14:56:48,913 INFO L432 NwaCegarLoop]: 2570 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:56:48,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2570 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:56:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2024-10-24 14:56:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2024-10-24 14:56:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 857 states have (on average 1.7736289381563595) internal successors, (1520), 1358 states have internal predecessors, (1520), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:56:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2526 transitions. [2024-10-24 14:56:49,350 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2526 transitions. Word has length 8 [2024-10-24 14:56:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:56:49,352 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 2526 transitions. [2024-10-24 14:56:49,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:56:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2526 transitions. [2024-10-24 14:56:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 14:56:49,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:56:49,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:56:49,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:56:49,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:56:49,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:56:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash -271741673, now seen corresponding path program 1 times [2024-10-24 14:56:49,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:56:49,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440550759] [2024-10-24 14:56:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:56:49,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:56:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:56:49,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:56:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440550759] [2024-10-24 14:56:49,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440550759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:56:49,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:56:49,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:56:49,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104189649] [2024-10-24 14:56:49,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:56:49,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:56:49,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:56:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:56:49,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:56:49,883 INFO L87 Difference]: Start difference. First operand 1364 states and 2526 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-24 14:56:50,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:56:50,846 INFO L93 Difference]: Finished difference Result 3882 states and 7281 transitions. [2024-10-24 14:56:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:56:50,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-24 14:56:50,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:56:50,869 INFO L225 Difference]: With dead ends: 3882 [2024-10-24 14:56:50,870 INFO L226 Difference]: Without dead ends: 2717 [2024-10-24 14:56:50,877 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 [2024-10-24 14:56:50,878 INFO L432 NwaCegarLoop]: 2740 mSDtfsCounter, 1507 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 7480 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:56:50,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 7480 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:56:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-10-24 14:56:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1366. [2024-10-24 14:56:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 859 states have (on average 1.7718277066356227) internal successors, (1522), 1360 states have internal predecessors, (1522), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:56:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2528 transitions. [2024-10-24 14:56:51,307 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2528 transitions. Word has length 63 [2024-10-24 14:56:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:56:51,308 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 2528 transitions. [2024-10-24 14:56:51,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-24 14:56:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2528 transitions. [2024-10-24 14:56:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-24 14:56:51,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:56:51,315 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:56:51,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:56:51,316 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:56:51,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:56:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash -930208392, now seen corresponding path program 1 times [2024-10-24 14:56:51,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:56:51,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287389971] [2024-10-24 14:56:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:56:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:56:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:56:51,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:56:51,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287389971] [2024-10-24 14:56:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287389971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:56:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:56:51,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:56:51,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381540625] [2024-10-24 14:56:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:56:51,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:56:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:56:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:56:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:56:51,706 INFO L87 Difference]: Start difference. First operand 1366 states and 2528 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-10-24 14:56:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:56:51,839 INFO L93 Difference]: Finished difference Result 2687 states and 4987 transitions. [2024-10-24 14:56:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:56:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 139 [2024-10-24 14:56:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:56:51,884 INFO L225 Difference]: With dead ends: 2687 [2024-10-24 14:56:51,885 INFO L226 Difference]: Without dead ends: 1324 [2024-10-24 14:56:51,890 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 [2024-10-24 14:56:51,893 INFO L432 NwaCegarLoop]: 2421 mSDtfsCounter, 30 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:56:51,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7246 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:56:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2024-10-24 14:56:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1324. [2024-10-24 14:56:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 817 states have (on average 1.7686658506731947) internal successors, (1445), 1318 states have internal predecessors, (1445), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:56:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2451 transitions. [2024-10-24 14:56:52,085 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2451 transitions. Word has length 139 [2024-10-24 14:56:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:56:52,087 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2451 transitions. [2024-10-24 14:56:52,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-10-24 14:56:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2451 transitions. [2024-10-24 14:56:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-24 14:56:52,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:56:52,093 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:56:52,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:56:52,094 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:56:52,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:56:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1343313156, now seen corresponding path program 1 times [2024-10-24 14:56:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:56:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178905820] [2024-10-24 14:56:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:56:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:56:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:56:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:56:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178905820] [2024-10-24 14:56:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178905820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:56:52,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:56:52,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:56:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169442142] [2024-10-24 14:56:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:56:52,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:56:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:56:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:56:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:56:52,297 INFO L87 Difference]: Start difference. First operand 1324 states and 2451 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2024-10-24 14:56:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:56:52,494 INFO L93 Difference]: Finished difference Result 3869 states and 7222 transitions. [2024-10-24 14:56:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:56:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 139 [2024-10-24 14:56:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:56:52,513 INFO L225 Difference]: With dead ends: 3869 [2024-10-24 14:56:52,514 INFO L226 Difference]: Without dead ends: 2548 [2024-10-24 14:56:52,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:56:52,522 INFO L432 NwaCegarLoop]: 2895 mSDtfsCounter, 1260 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 5322 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:56:52,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 5322 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:56:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2024-10-24 14:56:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2546. [2024-10-24 14:56:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 1539 states have (on average 1.796621182586095) internal successors, (2765), 2540 states have internal predecessors, (2765), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-10-24 14:56:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 4771 transitions. [2024-10-24 14:56:52,804 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 4771 transitions. Word has length 139 [2024-10-24 14:56:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:56:52,805 INFO L471 AbstractCegarLoop]: Abstraction has 2546 states and 4771 transitions. [2024-10-24 14:56:52,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2024-10-24 14:56:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 4771 transitions. [2024-10-24 14:56:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-24 14:56:52,809 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:56:52,809 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:56:52,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:56:52,810 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:56:52,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:56:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1771114328, now seen corresponding path program 1 times [2024-10-24 14:56:52,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:56:52,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461047281] [2024-10-24 14:56:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:56:52,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:56:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:53,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:56:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:53,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:56:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:56:53,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:56:53,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461047281] [2024-10-24 14:56:53,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461047281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:56:53,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:56:53,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:56:53,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990259765] [2024-10-24 14:56:53,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:56:53,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:56:53,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:56:53,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:56:53,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:56:53,180 INFO L87 Difference]: Start difference. First operand 2546 states and 4771 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:56:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:56:55,783 INFO L93 Difference]: Finished difference Result 4763 states and 9084 transitions. [2024-10-24 14:56:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:56:55,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-24 14:56:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:56:55,813 INFO L225 Difference]: With dead ends: 4763 [2024-10-24 14:56:55,814 INFO L226 Difference]: Without dead ends: 2464 [2024-10-24 14:56:55,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:56:55,827 INFO L432 NwaCegarLoop]: 2332 mSDtfsCounter, 37 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 7257 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:56:55,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 7257 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 14:56:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2024-10-24 14:56:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2462. [2024-10-24 14:56:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1455 states have (on average 1.7945017182130585) internal successors, (2611), 2456 states have internal predecessors, (2611), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-10-24 14:56:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4617 transitions. [2024-10-24 14:56:56,153 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4617 transitions. Word has length 152 [2024-10-24 14:56:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:56:56,155 INFO L471 AbstractCegarLoop]: Abstraction has 2462 states and 4617 transitions. [2024-10-24 14:56:56,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:56:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4617 transitions. [2024-10-24 14:56:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-24 14:56:56,157 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:56:56,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:56:56,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:56:56,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:56:56,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:56:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash 599600204, now seen corresponding path program 1 times [2024-10-24 14:56:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:56:56,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042349142] [2024-10-24 14:56:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:56:56,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:56:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:56,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:56:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:56,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:56:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:56:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:56:56,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:56:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042349142] [2024-10-24 14:56:56,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042349142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:56:56,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:56:56,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:56:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085671581] [2024-10-24 14:56:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:56:56,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:56:56,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:56:56,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:56:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:56:56,494 INFO L87 Difference]: Start difference. First operand 2462 states and 4617 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:57:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:02,034 INFO L93 Difference]: Finished difference Result 4915 states and 9225 transitions. [2024-10-24 14:57:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:57:02,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-24 14:57:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:02,059 INFO L225 Difference]: With dead ends: 4915 [2024-10-24 14:57:02,059 INFO L226 Difference]: Without dead ends: 2543 [2024-10-24 14:57:02,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:57:02,071 INFO L432 NwaCegarLoop]: 2686 mSDtfsCounter, 6050 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 2541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6552 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2541 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:02,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6552 Valid, 6533 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2541 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-10-24 14:57:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2024-10-24 14:57:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1369. [2024-10-24 14:57:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 862 states have (on average 1.7215777262180973) internal successors, (1484), 1363 states have internal predecessors, (1484), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-24 14:57:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2490 transitions. [2024-10-24 14:57:02,441 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2490 transitions. Word has length 152 [2024-10-24 14:57:02,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:02,442 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2490 transitions. [2024-10-24 14:57:02,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:57:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2490 transitions. [2024-10-24 14:57:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 14:57:02,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:02,445 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:02,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:57:02,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:02,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2129806592, now seen corresponding path program 1 times [2024-10-24 14:57:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:02,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245032815] [2024-10-24 14:57:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:03,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:57:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:03,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:57:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:03,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245032815] [2024-10-24 14:57:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245032815] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:57:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879266898] [2024-10-24 14:57:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:03,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:57:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:57:03,377 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) [2024-10-24 14:57:03,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:57:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:03,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 14:57:03,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:57:03,791 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 14:57:04,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:57:04,028 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 15 treesize of output 7 [2024-10-24 14:57:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:04,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:57:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:04,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879266898] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:57:04,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:57:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-10-24 14:57:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187188657] [2024-10-24 14:57:04,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:57:04,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 14:57:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 14:57:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:57:04,204 INFO L87 Difference]: Start difference. First operand 1369 states and 2490 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:57:13,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:13,986 INFO L93 Difference]: Finished difference Result 5222 states and 9633 transitions. [2024-10-24 14:57:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 14:57:13,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 162 [2024-10-24 14:57:13,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:14,017 INFO L225 Difference]: With dead ends: 5222 [2024-10-24 14:57:14,018 INFO L226 Difference]: Without dead ends: 4099 [2024-10-24 14:57:14,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-24 14:57:14,025 INFO L432 NwaCegarLoop]: 1879 mSDtfsCounter, 4315 mSDsluCounter, 10035 mSDsCounter, 0 mSdLazyCounter, 6200 mSolverCounterSat, 2512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5327 SdHoareTripleChecker+Valid, 11914 SdHoareTripleChecker+Invalid, 8712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2512 IncrementalHoareTripleChecker+Valid, 6200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:14,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5327 Valid, 11914 Invalid, 8712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2512 Valid, 6200 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-10-24 14:57:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2024-10-24 14:57:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 1715. [2024-10-24 14:57:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1204 states have (on average 1.611295681063123) internal successors, (1940), 1705 states have internal predecessors, (1940), 506 states have call successors, (506), 3 states have call predecessors, (506), 3 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2024-10-24 14:57:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2952 transitions. [2024-10-24 14:57:14,488 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2952 transitions. Word has length 162 [2024-10-24 14:57:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:14,489 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2952 transitions. [2024-10-24 14:57:14,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:57:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2952 transitions. [2024-10-24 14:57:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-24 14:57:14,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:14,495 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:14,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 14:57:14,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:57:14,698 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:14,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash 491075335, now seen corresponding path program 1 times [2024-10-24 14:57:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88479469] [2024-10-24 14:57:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:14,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:18,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:57:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:18,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:57:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:18,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88479469] [2024-10-24 14:57:18,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88479469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:57:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110971168] [2024-10-24 14:57:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:57:18,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:57:18,497 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) [2024-10-24 14:57:18,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:57:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:19,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 14:57:19,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:57:19,198 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 14:57:19,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:57:19,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:57:19,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:57:19,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 14:57:19,802 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 15 treesize of output 7 [2024-10-24 14:57:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:19,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:57:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110971168] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:57:20,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:57:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-10-24 14:57:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908571362] [2024-10-24 14:57:20,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:57:20,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 14:57:20,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 14:57:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2024-10-24 14:57:20,382 INFO L87 Difference]: Start difference. First operand 1715 states and 2952 transitions. Second operand has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:57:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:40,588 INFO L93 Difference]: Finished difference Result 10550 states and 19420 transitions. [2024-10-24 14:57:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 14:57:40,589 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 390 [2024-10-24 14:57:40,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:40,655 INFO L225 Difference]: With dead ends: 10550 [2024-10-24 14:57:40,659 INFO L226 Difference]: Without dead ends: 9427 [2024-10-24 14:57:40,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 776 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2024-10-24 14:57:40,670 INFO L432 NwaCegarLoop]: 1879 mSDtfsCounter, 16054 mSDsluCounter, 20613 mSDsCounter, 0 mSdLazyCounter, 12095 mSolverCounterSat, 5812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19074 SdHoareTripleChecker+Valid, 22492 SdHoareTripleChecker+Invalid, 17907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5812 IncrementalHoareTripleChecker+Valid, 12095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:40,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19074 Valid, 22492 Invalid, 17907 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5812 Valid, 12095 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2024-10-24 14:57:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9427 states. [2024-10-24 14:57:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9427 to 2579. [2024-10-24 14:57:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2062 states have (on average 1.4966052376333656) internal successors, (3086), 2563 states have internal predecessors, (3086), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-10-24 14:57:41,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4110 transitions. [2024-10-24 14:57:41,908 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4110 transitions. Word has length 390 [2024-10-24 14:57:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:41,909 INFO L471 AbstractCegarLoop]: Abstraction has 2579 states and 4110 transitions. [2024-10-24 14:57:41,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 14:57:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4110 transitions. [2024-10-24 14:57:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2024-10-24 14:57:41,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:41,929 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:41,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 14:57:42,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-24 14:57:42,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:42,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -948514667, now seen corresponding path program 2 times [2024-10-24 14:57:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967642817] [2024-10-24 14:57:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat