./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/discover_list.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/loops-crafted-1/discover_list.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2aca78a4c905fef1e916fc947a81c98263f5056a4b2b5d7ea35195ed74fad5a5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:20:11,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:20:11,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:20:11,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:20:11,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:20:11,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:20:11,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:20:11,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:20:11,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:20:11,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:20:11,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:20:11,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:20:11,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:20:11,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:20:11,419 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:20:11,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:20:11,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:20:11,420 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:20:11,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:20:11,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:20:11,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:20:11,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:20:11,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:20:11,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:20:11,422 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:20:11,423 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:20:11,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:20:11,423 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:20:11,424 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:20:11,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:20:11,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:20:11,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:20:11,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:20:11,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:20:11,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:20:11,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:20:11,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:20:11,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:20:11,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:20:11,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:20:11,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:20:11,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:20:11,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aca78a4c905fef1e916fc947a81c98263f5056a4b2b5d7ea35195ed74fad5a5 [2024-11-09 22:20:11,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:20:11,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:20:11,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:20:11,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:20:11,707 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:20:11,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/discover_list.c [2024-11-09 22:20:13,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:20:13,310 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:20:13,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/discover_list.c [2024-11-09 22:20:13,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8f27265/332037d647b14bdaaebc32d3a7b4335a/FLAG630a667ee [2024-11-09 22:20:13,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8f27265/332037d647b14bdaaebc32d3a7b4335a [2024-11-09 22:20:13,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:20:13,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:20:13,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:20:13,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:20:13,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:20:13,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c440f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13, skipping insertion in model container [2024-11-09 22:20:13,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:20:13,649 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/loops-crafted-1/discover_list.c[5067,5080] [2024-11-09 22:20:13,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:20:13,754 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:20:13,775 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/loops-crafted-1/discover_list.c[5067,5080] [2024-11-09 22:20:13,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:20:13,846 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:20:13,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13 WrapperNode [2024-11-09 22:20:13,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:20:13,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:20:13,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:20:13,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:20:13,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,916 INFO L138 Inliner]: procedures = 37, calls = 248, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 511 [2024-11-09 22:20:13,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:20:13,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:20:13,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:20:13,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:20:13,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,936 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,960 INFO L175 MemorySlicer]: Split 181 memory accesses to 7 slices as follows [2, 42, 11, 100, 10, 12, 4]. 55 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 148 writes are split as follows [0, 39, 11, 97, 0, 0, 1]. [2024-11-09 22:20:13,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,985 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:13,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:20:14,002 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:20:14,002 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:20:14,003 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:20:14,003 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (1/1) ... [2024-11-09 22:20:14,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:20:14,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:14,046 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) [2024-11-09 22:20:14,053 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 [2024-11-09 22:20:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:20:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-09 22:20:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-09 22:20:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-09 22:20:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-09 22:20:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-09 22:20:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-09 22:20:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-09 22:20:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 22:20:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 22:20:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 22:20:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 22:20:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 22:20:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 22:20:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 22:20:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 22:20:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 22:20:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 22:20:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 22:20:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 22:20:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 22:20:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 22:20:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 22:20:14,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 22:20:14,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 22:20:14,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-09 22:20:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-09 22:20:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-09 22:20:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-11-09 22:20:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-11-09 22:20:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 22:20:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 22:20:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-09 22:20:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-09 22:20:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-09 22:20:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-11-09 22:20:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-11-09 22:20:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:20:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 22:20:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 22:20:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 22:20:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 22:20:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 22:20:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 22:20:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 22:20:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:20:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:20:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:20:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:20:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 22:20:14,258 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:20:14,260 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:20:14,977 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L475: havoc do_discover_list_#t~mem97#1; [2024-11-09 22:20:14,978 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L419: call ULTIMATE.dealloc(do_discover_list_~#smp_req~0#1.base, do_discover_list_~#smp_req~0#1.offset);havoc do_discover_list_~#smp_req~0#1.base, do_discover_list_~#smp_req~0#1.offset;call ULTIMATE.dealloc(do_discover_list_~#smp_rr~0#1.base, do_discover_list_~#smp_rr~0#1.offset);havoc do_discover_list_~#smp_rr~0#1.base, do_discover_list_~#smp_rr~0#1.offset; [2024-11-09 22:20:14,978 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L495: call ULTIMATE.dealloc(main_~#tobj~0#1.base, main_~#tobj~0#1.offset);havoc main_~#tobj~0#1.base, main_~#tobj~0#1.offset;call ULTIMATE.dealloc(main_~#opts~0#1.base, main_~#opts~0#1.offset);havoc main_~#opts~0#1.base, main_~#opts~0#1.offset; [2024-11-09 22:20:14,978 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: havoc smp_send_req_#t~nondet4#1; [2024-11-09 22:20:14,978 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L489: havoc do_discover_list_#t~mem102#1; [2024-11-09 22:20:15,048 INFO L? ?]: Removed 109 outVars from TransFormulas that were not future-live. [2024-11-09 22:20:15,048 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:20:15,068 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:20:15,069 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:20:15,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:20:15 BoogieIcfgContainer [2024-11-09 22:20:15,070 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:20:15,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:20:15,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:20:15,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:20:15,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:20:13" (1/3) ... [2024-11-09 22:20:15,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693d0a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:20:15, skipping insertion in model container [2024-11-09 22:20:15,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:13" (2/3) ... [2024-11-09 22:20:15,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693d0a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:20:15, skipping insertion in model container [2024-11-09 22:20:15,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:20:15" (3/3) ... [2024-11-09 22:20:15,081 INFO L112 eAbstractionObserver]: Analyzing ICFG discover_list.c [2024-11-09 22:20:15,097 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:20:15,097 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:20:15,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:20:15,166 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;@7c573300, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:20:15,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:20:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 80 states have internal predecessors, (118), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 22:20:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 22:20:15,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:15,177 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] [2024-11-09 22:20:15,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:15,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:15,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1396309903, now seen corresponding path program 1 times [2024-11-09 22:20:15,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:15,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363442275] [2024-11-09 22:20:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:15,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:16,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:20:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:16,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:20:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:16,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:16,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363442275] [2024-11-09 22:20:16,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363442275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:20:16,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:20:16,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:20:16,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548174437] [2024-11-09 22:20:16,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:16,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:20:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:16,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:20:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:20:16,892 INFO L87 Difference]: Start difference. First operand has 92 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 80 states have internal predecessors, (118), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:20:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:17,215 INFO L93 Difference]: Finished difference Result 216 states and 327 transitions. [2024-11-09 22:20:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:20:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2024-11-09 22:20:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:17,226 INFO L225 Difference]: With dead ends: 216 [2024-11-09 22:20:17,226 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 22:20:17,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:20:17,236 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 77 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:17,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 720 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:20:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 22:20:17,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 78. [2024-11-09 22:20:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 22:20:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2024-11-09 22:20:17,278 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 40 [2024-11-09 22:20:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:17,279 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2024-11-09 22:20:17,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:20:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2024-11-09 22:20:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 22:20:17,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:17,281 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] [2024-11-09 22:20:17,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:20:17,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:17,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -948357138, now seen corresponding path program 1 times [2024-11-09 22:20:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525065007] [2024-11-09 22:20:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:18,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:20:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:18,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:20:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525065007] [2024-11-09 22:20:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525065007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:20:18,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:20:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:20:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641202199] [2024-11-09 22:20:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:18,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:20:18,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:20:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:20:18,518 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:20:18,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:18,692 INFO L93 Difference]: Finished difference Result 127 states and 168 transitions. [2024-11-09 22:20:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:20:18,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-11-09 22:20:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:18,694 INFO L225 Difference]: With dead ends: 127 [2024-11-09 22:20:18,696 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 22:20:18,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:18,697 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 33 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:18,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 347 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:20:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 22:20:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2024-11-09 22:20:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 22:20:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2024-11-09 22:20:18,711 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 40 [2024-11-09 22:20:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:18,711 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2024-11-09 22:20:18,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:20:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2024-11-09 22:20:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 22:20:18,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:18,713 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] [2024-11-09 22:20:18,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:20:18,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:18,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:18,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1945429491, now seen corresponding path program 1 times [2024-11-09 22:20:18,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:18,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389988902] [2024-11-09 22:20:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:18,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:20:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:20:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:19,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:19,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389988902] [2024-11-09 22:20:19,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389988902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:20:19,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:20:19,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:20:19,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773315364] [2024-11-09 22:20:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:19,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:20:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:20:19,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:20:19,734 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:20:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:19,898 INFO L93 Difference]: Finished difference Result 143 states and 189 transitions. [2024-11-09 22:20:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:20:19,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-11-09 22:20:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:19,899 INFO L225 Difference]: With dead ends: 143 [2024-11-09 22:20:19,901 INFO L226 Difference]: Without dead ends: 82 [2024-11-09 22:20:19,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:20:19,903 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 32 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:19,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 364 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-09 22:20:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2024-11-09 22:20:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 67 states have internal predecessors, (87), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 22:20:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2024-11-09 22:20:19,915 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 40 [2024-11-09 22:20:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:19,916 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2024-11-09 22:20:19,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:20:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2024-11-09 22:20:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:20:19,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:19,920 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] [2024-11-09 22:20:19,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:20:19,921 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:19,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash -363208233, now seen corresponding path program 1 times [2024-11-09 22:20:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:19,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691493095] [2024-11-09 22:20:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:20,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:20:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:20,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 22:20:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:21,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:21,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691493095] [2024-11-09 22:20:21,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691493095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:21,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574720895] [2024-11-09 22:20:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:21,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:21,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:21,004 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) [2024-11-09 22:20:21,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:20:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:22,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 22:20:22,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:22,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:20:22,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574720895] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:22,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:20:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2024-11-09 22:20:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690502508] [2024-11-09 22:20:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:22,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:20:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:20:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:20:22,183 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:20:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:22,200 INFO L93 Difference]: Finished difference Result 121 states and 159 transitions. [2024-11-09 22:20:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:20:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2024-11-09 22:20:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:22,201 INFO L225 Difference]: With dead ends: 121 [2024-11-09 22:20:22,201 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 22:20:22,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:20:22,203 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:22,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 22:20:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-09 22:20:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 22:20:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2024-11-09 22:20:22,218 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 41 [2024-11-09 22:20:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:22,220 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2024-11-09 22:20:22,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:20:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2024-11-09 22:20:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 22:20:22,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:22,221 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] [2024-11-09 22:20:22,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:22,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:22,423 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:22,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1238381695, now seen corresponding path program 1 times [2024-11-09 22:20:22,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:22,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430180445] [2024-11-09 22:20:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:22,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:23,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:20:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:23,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 22:20:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:20:23,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430180445] [2024-11-09 22:20:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430180445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149049782] [2024-11-09 22:20:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:23,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:23,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:23,579 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) [2024-11-09 22:20:23,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:20:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:24,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:20:24,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:20:24,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:20:24,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149049782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:24,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-09 22:20:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244669194] [2024-11-09 22:20:24,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:24,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:20:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:24,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:20:24,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:20:24,641 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:20:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:24,907 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2024-11-09 22:20:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:20:24,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-09 22:20:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:24,908 INFO L225 Difference]: With dead ends: 147 [2024-11-09 22:20:24,909 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 22:20:24,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:20:24,911 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 32 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:24,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 592 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:20:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 22:20:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-09 22:20:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 71 states have internal predecessors, (91), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 22:20:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 107 transitions. [2024-11-09 22:20:24,924 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 107 transitions. Word has length 42 [2024-11-09 22:20:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:24,926 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 107 transitions. [2024-11-09 22:20:24,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:20:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 107 transitions. [2024-11-09 22:20:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 22:20:24,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:24,928 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 22:20:24,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:25,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:25,129 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:25,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2013155191, now seen corresponding path program 2 times [2024-11-09 22:20:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:25,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554606808] [2024-11-09 22:20:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:26,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:20:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:26,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-09 22:20:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:20:26,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554606808] [2024-11-09 22:20:26,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554606808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:26,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806250154] [2024-11-09 22:20:26,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:20:26,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:26,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:26,239 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) [2024-11-09 22:20:26,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:21:42,411 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:42,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:42,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:21:42,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:21:42,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:21:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806250154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:42,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-09 22:21:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396618526] [2024-11-09 22:21:42,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:42,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:21:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:21:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:21:42,731 INFO L87 Difference]: Start difference. First operand 83 states and 107 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:21:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:43,279 INFO L93 Difference]: Finished difference Result 153 states and 202 transitions. [2024-11-09 22:21:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 22:21:43,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-11-09 22:21:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:43,280 INFO L225 Difference]: With dead ends: 153 [2024-11-09 22:21:43,280 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 22:21:43,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 22:21:43,282 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 41 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:43,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 743 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:21:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 22:21:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-09 22:21:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 77 states have (on average 1.2597402597402598) internal successors, (97), 77 states have internal predecessors, (97), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 22:21:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2024-11-09 22:21:43,297 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 45 [2024-11-09 22:21:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:43,297 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2024-11-09 22:21:43,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:21:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2024-11-09 22:21:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 22:21:43,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:43,299 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:43,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:43,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:43,500 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:43,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1279914807, now seen corresponding path program 3 times [2024-11-09 22:21:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:43,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692816776] [2024-11-09 22:21:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:44,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:21:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:44,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 22:21:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:21:44,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692816776] [2024-11-09 22:21:44,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692816776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828218882] [2024-11-09 22:21:44,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:21:44,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:44,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:44,917 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) [2024-11-09 22:21:44,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process