./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.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 c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 22:54:21,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 22:54:21,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 22:54:21,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 22:54:21,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 22:54:21,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 22:54:21,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 22:54:21,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 22:54:21,123 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 22:54:21,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 22:54:21,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 22:54:21,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 22:54:21,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 22:54:21,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 22:54:21,125 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 22:54:21,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 22:54:21,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 22:54:21,126 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 22:54:21,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 22:54:21,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 22:54:21,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 22:54:21,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 22:54:21,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 22:54:21,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 22:54:21,128 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 22:54:21,128 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 22:54:21,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 22:54:21,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 22:54:21,129 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 22:54:21,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 22:54:21,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 22:54:21,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 22:54:21,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:54:21,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 22:54:21,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 22:54:21,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 22:54:21,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 22:54:21,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 22:54:21,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 22:54:21,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 22:54:21,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 22:54:21,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 22:54:21,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b [2024-11-16 22:54:21,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 22:54:21,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 22:54:21,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 22:54:21,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 22:54:21,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 22:54:21,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2024-11-16 22:54:22,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 22:54:22,878 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 22:54:22,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2024-11-16 22:54:22,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84f8c32e0/9f065c97837642ff8069972c68d643bf/FLAG2575a643d [2024-11-16 22:54:22,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84f8c32e0/9f065c97837642ff8069972c68d643bf [2024-11-16 22:54:22,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 22:54:22,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 22:54:22,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 22:54:22,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 22:54:22,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 22:54:22,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:22" (1/1) ... [2024-11-16 22:54:22,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6ff3f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22, skipping insertion in model container [2024-11-16 22:54:22,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:22" (1/1) ... [2024-11-16 22:54:22,964 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 22:54:23,289 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[33021,33034] [2024-11-16 22:54:23,392 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[49681,49694] [2024-11-16 22:54:23,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:54:23,423 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 22:54:23,462 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[33021,33034] [2024-11-16 22:54:23,544 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[49681,49694] [2024-11-16 22:54:23,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:54:23,584 INFO L204 MainTranslator]: Completed translation [2024-11-16 22:54:23,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23 WrapperNode [2024-11-16 22:54:23,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 22:54:23,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 22:54:23,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 22:54:23,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 22:54:23,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,761 INFO L138 Inliner]: procedures = 177, calls = 424, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2151 [2024-11-16 22:54:23,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 22:54:23,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 22:54:23,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 22:54:23,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 22:54:23,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,942 INFO L175 MemorySlicer]: Split 397 memory accesses to 3 slices as follows [2, 24, 371]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 91 writes are split as follows [0, 1, 90]. [2024-11-16 22:54:23,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,986 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:23,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:24,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 22:54:24,008 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 22:54:24,008 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 22:54:24,008 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 22:54:24,009 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (1/1) ... [2024-11-16 22:54:24,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:54:24,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:24,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 22:54:24,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 22:54:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 22:54:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 22:54:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 22:54:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 22:54:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 22:54:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 22:54:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 22:54:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 22:54:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 22:54:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 22:54:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 22:54:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 22:54:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 22:54:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 22:54:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 22:54:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 22:54:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 22:54:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 22:54:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 22:54:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 22:54:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 22:54:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 22:54:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 22:54:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 22:54:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 22:54:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 22:54:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 22:54:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 22:54:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 22:54:24,312 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 22:54:24,314 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 22:54:25,734 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#j~0#1.base, main_~#j~0#1.offset);havoc main_~#j~0#1.base, main_~#j~0#1.offset; [2024-11-16 22:54:25,880 INFO L? ?]: Removed 509 outVars from TransFormulas that were not future-live. [2024-11-16 22:54:25,880 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 22:54:25,943 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 22:54:25,947 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-16 22:54:25,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:54:25 BoogieIcfgContainer [2024-11-16 22:54:25,948 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 22:54:25,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 22:54:25,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 22:54:25,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 22:54:25,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:22" (1/3) ... [2024-11-16 22:54:25,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27212ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:25, skipping insertion in model container [2024-11-16 22:54:25,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:23" (2/3) ... [2024-11-16 22:54:25,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27212ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:25, skipping insertion in model container [2024-11-16 22:54:25,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:54:25" (3/3) ... [2024-11-16 22:54:25,956 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-2.i [2024-11-16 22:54:25,969 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 22:54:25,969 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 22:54:26,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 22:54:26,032 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;@265d9bd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 22:54:26,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 22:54:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 596 states have (on average 1.6157718120805369) internal successors, (963), 603 states have internal predecessors, (963), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 22:54:26,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 22:54:26,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:26,043 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:26,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:26,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1661751144, now seen corresponding path program 1 times [2024-11-16 22:54:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738332190] [2024-11-16 22:54:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:54:26,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:26,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738332190] [2024-11-16 22:54:26,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738332190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:26,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:26,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 22:54:26,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272658075] [2024-11-16 22:54:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:26,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 22:54:26,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 22:54:26,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:54:26,192 INFO L87 Difference]: Start difference. First operand has 612 states, 596 states have (on average 1.6157718120805369) internal successors, (963), 603 states have internal predecessors, (963), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:26,312 INFO L93 Difference]: Finished difference Result 1222 states and 1973 transitions. [2024-11-16 22:54:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 22:54:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-16 22:54:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:26,324 INFO L225 Difference]: With dead ends: 1222 [2024-11-16 22:54:26,325 INFO L226 Difference]: Without dead ends: 573 [2024-11-16 22:54:26,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:54:26,335 INFO L432 NwaCegarLoop]: 820 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:26,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 820 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:54:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-16 22:54:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-11-16 22:54:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 558 states have (on average 1.4516129032258065) internal successors, (810), 564 states have internal predecessors, (810), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 22:54:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 832 transitions. [2024-11-16 22:54:26,390 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 832 transitions. Word has length 9 [2024-11-16 22:54:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:26,390 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 832 transitions. [2024-11-16 22:54:26,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 832 transitions. [2024-11-16 22:54:26,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 22:54:26,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:26,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:26,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 22:54:26,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:26,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1041002816, now seen corresponding path program 1 times [2024-11-16 22:54:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672420403] [2024-11-16 22:54:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:26,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:54:26,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672420403] [2024-11-16 22:54:26,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672420403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:26,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:26,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 22:54:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112239226] [2024-11-16 22:54:26,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:26,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:54:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:54:26,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:54:26,585 INFO L87 Difference]: Start difference. First operand 573 states and 832 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:26,797 INFO L93 Difference]: Finished difference Result 1311 states and 1914 transitions. [2024-11-16 22:54:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:54:26,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2024-11-16 22:54:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:26,802 INFO L225 Difference]: With dead ends: 1311 [2024-11-16 22:54:26,803 INFO L226 Difference]: Without dead ends: 1133 [2024-11-16 22:54:26,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:54:26,805 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 794 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:26,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1570 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:54:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-16 22:54:26,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 575. [2024-11-16 22:54:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 560 states have (on average 1.45) internal successors, (812), 566 states have internal predecessors, (812), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 22:54:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 834 transitions. [2024-11-16 22:54:26,837 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 834 transitions. Word has length 65 [2024-11-16 22:54:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:26,838 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 834 transitions. [2024-11-16 22:54:26,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 834 transitions. [2024-11-16 22:54:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-16 22:54:26,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:26,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:26,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 22:54:26,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:26,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 492791081, now seen corresponding path program 1 times [2024-11-16 22:54:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:26,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330721297] [2024-11-16 22:54:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:54:27,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:27,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330721297] [2024-11-16 22:54:27,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330721297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:27,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:27,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:54:27,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863355382] [2024-11-16 22:54:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:27,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:54:27,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:54:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:27,472 INFO L87 Difference]: Start difference. First operand 575 states and 834 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:27,661 INFO L93 Difference]: Finished difference Result 1149 states and 1667 transitions. [2024-11-16 22:54:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:54:27,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 214 [2024-11-16 22:54:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:27,664 INFO L225 Difference]: With dead ends: 1149 [2024-11-16 22:54:27,664 INFO L226 Difference]: Without dead ends: 578 [2024-11-16 22:54:27,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:54:27,668 INFO L432 NwaCegarLoop]: 741 mSDtfsCounter, 105 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:27,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2138 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:54:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-16 22:54:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 575. [2024-11-16 22:54:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 560 states have (on average 1.4375) internal successors, (805), 566 states have internal predecessors, (805), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 22:54:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 827 transitions. [2024-11-16 22:54:27,690 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 827 transitions. Word has length 214 [2024-11-16 22:54:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:27,691 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 827 transitions. [2024-11-16 22:54:27,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 827 transitions. [2024-11-16 22:54:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-16 22:54:27,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:27,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:27,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 22:54:27,695 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:27,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1936189725, now seen corresponding path program 1 times [2024-11-16 22:54:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614286822] [2024-11-16 22:54:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:27,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:54:27,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:27,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614286822] [2024-11-16 22:54:27,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614286822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:27,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:27,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 22:54:27,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967213027] [2024-11-16 22:54:27,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:27,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:54:27,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:54:27,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:54:27,927 INFO L87 Difference]: Start difference. First operand 575 states and 827 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:28,094 INFO L93 Difference]: Finished difference Result 1276 states and 1840 transitions. [2024-11-16 22:54:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:54:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 214 [2024-11-16 22:54:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:28,097 INFO L225 Difference]: With dead ends: 1276 [2024-11-16 22:54:28,099 INFO L226 Difference]: Without dead ends: 705 [2024-11-16 22:54:28,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:54:28,101 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 134 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:28,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1515 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:54:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-16 22:54:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2024-11-16 22:54:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 690 states have (on average 1.4405797101449276) internal successors, (994), 696 states have internal predecessors, (994), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 22:54:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1016 transitions. [2024-11-16 22:54:28,118 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1016 transitions. Word has length 214 [2024-11-16 22:54:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:28,118 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 1016 transitions. [2024-11-16 22:54:28,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:54:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1016 transitions. [2024-11-16 22:54:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-16 22:54:28,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:28,121 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:28,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 22:54:28,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:28,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1101067382, now seen corresponding path program 1 times [2024-11-16 22:54:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:28,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108702593] [2024-11-16 22:54:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:28,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:28,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:28,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:28,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108702593] [2024-11-16 22:54:28,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108702593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:28,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:28,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:54:28,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485301561] [2024-11-16 22:54:28,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:28,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:54:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:28,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:54:28,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:54:28,541 INFO L87 Difference]: Start difference. First operand 705 states and 1016 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 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) [2024-11-16 22:54:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:28,970 INFO L93 Difference]: Finished difference Result 1237 states and 1782 transitions. [2024-11-16 22:54:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:54:28,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 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 229 [2024-11-16 22:54:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:28,974 INFO L225 Difference]: With dead ends: 1237 [2024-11-16 22:54:28,974 INFO L226 Difference]: Without dead ends: 666 [2024-11-16 22:54:28,975 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 [2024-11-16 22:54:28,975 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 38 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:28,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2514 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:54:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-16 22:54:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 663. [2024-11-16 22:54:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 648 states have (on average 1.4151234567901234) internal successors, (917), 654 states have internal predecessors, (917), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 22:54:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 939 transitions. [2024-11-16 22:54:28,991 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 939 transitions. Word has length 229 [2024-11-16 22:54:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:28,992 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 939 transitions. [2024-11-16 22:54:28,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 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) [2024-11-16 22:54:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 939 transitions. [2024-11-16 22:54:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-16 22:54:28,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:28,995 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:28,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 22:54:28,995 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:28,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1297409860, now seen corresponding path program 1 times [2024-11-16 22:54:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936532774] [2024-11-16 22:54:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:28,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:29,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:29,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:29,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:29,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936532774] [2024-11-16 22:54:29,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936532774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:29,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:29,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:54:29,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032916900] [2024-11-16 22:54:29,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:29,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:54:29,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:29,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:54:29,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:29,259 INFO L87 Difference]: Start difference. First operand 663 states and 939 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-16 22:54:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:29,762 INFO L93 Difference]: Finished difference Result 1492 states and 2123 transitions. [2024-11-16 22:54:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:54:29,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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 229 [2024-11-16 22:54:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:29,767 INFO L225 Difference]: With dead ends: 1492 [2024-11-16 22:54:29,767 INFO L226 Difference]: Without dead ends: 963 [2024-11-16 22:54:29,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:29,768 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 466 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:29,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 2273 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:54:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-11-16 22:54:29,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 958. [2024-11-16 22:54:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 935 states have (on average 1.416042780748663) internal successors, (1324), 946 states have internal predecessors, (1324), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 22:54:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1362 transitions. [2024-11-16 22:54:29,791 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1362 transitions. Word has length 229 [2024-11-16 22:54:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:29,791 INFO L471 AbstractCegarLoop]: Abstraction has 958 states and 1362 transitions. [2024-11-16 22:54:29,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-16 22:54:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1362 transitions. [2024-11-16 22:54:29,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-16 22:54:29,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:29,794 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:29,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 22:54:29,794 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:29,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1153051961, now seen corresponding path program 1 times [2024-11-16 22:54:29,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:29,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814976833] [2024-11-16 22:54:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:29,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:30,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:30,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:30,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-16 22:54:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:30,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 22:54:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814976833] [2024-11-16 22:54:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814976833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:30,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111103689] [2024-11-16 22:54:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:30,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:30,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:54:30,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 22:54:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:30,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 22:54:30,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 22:54:30,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:54:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111103689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:30,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:54:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-16 22:54:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189404267] [2024-11-16 22:54:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:30,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:54:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:54:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:54:30,629 INFO L87 Difference]: Start difference. First operand 958 states and 1362 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:30,756 INFO L93 Difference]: Finished difference Result 1322 states and 1907 transitions. [2024-11-16 22:54:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:54:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 244 [2024-11-16 22:54:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:30,760 INFO L225 Difference]: With dead ends: 1322 [2024-11-16 22:54:30,761 INFO L226 Difference]: Without dead ends: 998 [2024-11-16 22:54:30,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:54:30,762 INFO L432 NwaCegarLoop]: 668 mSDtfsCounter, 8 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:30,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1321 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:54:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-16 22:54:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2024-11-16 22:54:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 975 states have (on average 1.398974358974359) internal successors, (1364), 986 states have internal predecessors, (1364), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 22:54:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1402 transitions. [2024-11-16 22:54:30,780 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1402 transitions. Word has length 244 [2024-11-16 22:54:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:30,780 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1402 transitions. [2024-11-16 22:54:30,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1402 transitions. [2024-11-16 22:54:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-16 22:54:30,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:30,783 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:30,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 22:54:30,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:30,988 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:30,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2116423336, now seen corresponding path program 1 times [2024-11-16 22:54:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:30,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730913388] [2024-11-16 22:54:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:30,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-16 22:54:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 22:54:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:31,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730913388] [2024-11-16 22:54:31,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730913388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867220604] [2024-11-16 22:54:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:31,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:31,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:31,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:54:31,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 22:54:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 22:54:31,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 22:54:31,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:54:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867220604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:31,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:54:31,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 22:54:31,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424848640] [2024-11-16 22:54:31,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:31,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:54:31,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:31,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:54:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:54:31,700 INFO L87 Difference]: Start difference. First operand 998 states and 1402 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:31,843 INFO L93 Difference]: Finished difference Result 1334 states and 1899 transitions. [2024-11-16 22:54:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:54:31,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 244 [2024-11-16 22:54:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:31,846 INFO L225 Difference]: With dead ends: 1334 [2024-11-16 22:54:31,847 INFO L226 Difference]: Without dead ends: 970 [2024-11-16 22:54:31,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:54:31,848 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 105 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:31,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1895 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:54:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2024-11-16 22:54:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2024-11-16 22:54:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 947 states have (on average 1.3959873284054911) internal successors, (1322), 958 states have internal predecessors, (1322), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 22:54:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1360 transitions. [2024-11-16 22:54:31,903 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1360 transitions. Word has length 244 [2024-11-16 22:54:31,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:31,903 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1360 transitions. [2024-11-16 22:54:31,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:31,904 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1360 transitions. [2024-11-16 22:54:31,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-16 22:54:31,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:31,906 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:31,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 22:54:32,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 22:54:32,107 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:32,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1302721023, now seen corresponding path program 1 times [2024-11-16 22:54:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:32,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141273268] [2024-11-16 22:54:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:32,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:32,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:32,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:32,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-16 22:54:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:32,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 22:54:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:32,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:32,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141273268] [2024-11-16 22:54:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141273268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:32,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680032974] [2024-11-16 22:54:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:32,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:32,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:32,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:54:32,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 22:54:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:32,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 22:54:32,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:32,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:54:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680032974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:54:33,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:54:33,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-16 22:54:33,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879017438] [2024-11-16 22:54:33,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:54:33,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 22:54:33,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 22:54:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:54:33,157 INFO L87 Difference]: Start difference. First operand 970 states and 1360 transitions. Second operand has 8 states, 8 states have (on average 68.75) internal successors, (550), 7 states have internal predecessors, (550), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 22:54:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:33,799 INFO L93 Difference]: Finished difference Result 2593 states and 3678 transitions. [2024-11-16 22:54:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:54:33,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 68.75) internal successors, (550), 7 states have internal predecessors, (550), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 244 [2024-11-16 22:54:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:33,809 INFO L225 Difference]: With dead ends: 2593 [2024-11-16 22:54:33,809 INFO L226 Difference]: Without dead ends: 2256 [2024-11-16 22:54:33,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:54:33,811 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 3974 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4021 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:33,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4021 Valid, 3462 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:54:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-11-16 22:54:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 1729. [2024-11-16 22:54:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1691 states have (on average 1.3808397397989356) internal successors, (2335), 1702 states have internal predecessors, (2335), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 26 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-16 22:54:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2403 transitions. [2024-11-16 22:54:33,844 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2403 transitions. Word has length 244 [2024-11-16 22:54:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:33,844 INFO L471 AbstractCegarLoop]: Abstraction has 1729 states and 2403 transitions. [2024-11-16 22:54:33,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.75) internal successors, (550), 7 states have internal predecessors, (550), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 22:54:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2403 transitions. [2024-11-16 22:54:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2024-11-16 22:54:33,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:33,854 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, 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, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:33,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 22:54:34,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:34,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:34,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1835491504, now seen corresponding path program 1 times [2024-11-16 22:54:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:34,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860766418] [2024-11-16 22:54:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:34,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:34,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:34,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-16 22:54:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:34,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 22:54:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 8 proven. 375 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-11-16 22:54:34,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860766418] [2024-11-16 22:54:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860766418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11939616] [2024-11-16 22:54:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:34,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:34,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:34,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:54:34,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 22:54:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:35,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 22:54:35,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:36,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:54:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 890 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:37,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11939616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:54:37,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:54:37,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-16 22:54:37,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548973364] [2024-11-16 22:54:37,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:54:37,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 22:54:37,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 22:54:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-16 22:54:37,117 INFO L87 Difference]: Start difference. First operand 1729 states and 2403 transitions. Second operand has 15 states, 15 states have (on average 108.8) internal successors, (1632), 14 states have internal predecessors, (1632), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 22:54:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:41,222 INFO L93 Difference]: Finished difference Result 5565 states and 7813 transitions. [2024-11-16 22:54:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 22:54:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 108.8) internal successors, (1632), 14 states have internal predecessors, (1632), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 691 [2024-11-16 22:54:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:41,238 INFO L225 Difference]: With dead ends: 5565 [2024-11-16 22:54:41,238 INFO L226 Difference]: Without dead ends: 4465 [2024-11-16 22:54:41,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1414 GetRequests, 1389 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2024-11-16 22:54:41,241 INFO L432 NwaCegarLoop]: 1084 mSDtfsCounter, 16465 mSDsluCounter, 6526 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16465 SdHoareTripleChecker+Valid, 7610 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:41,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16465 Valid, 7610 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-16 22:54:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2024-11-16 22:54:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 3577. [2024-11-16 22:54:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3526 states have (on average 1.3757799205899035) internal successors, (4851), 3532 states have internal predecessors, (4851), 47 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-16 22:54:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 4945 transitions. [2024-11-16 22:54:41,313 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 4945 transitions. Word has length 691 [2024-11-16 22:54:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:41,314 INFO L471 AbstractCegarLoop]: Abstraction has 3577 states and 4945 transitions. [2024-11-16 22:54:41,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 108.8) internal successors, (1632), 14 states have internal predecessors, (1632), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 22:54:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 4945 transitions. [2024-11-16 22:54:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1597 [2024-11-16 22:54:41,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:41,372 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, 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, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:41,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 22:54:41,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:41,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:41,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:41,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2049321238, now seen corresponding path program 1 times [2024-11-16 22:54:41,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:41,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684262811] [2024-11-16 22:54:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:41,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms