./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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 0.3.0-?-8fc3dc6-m [2025-03-16 17:54:15,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 17:54:15,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 17:54:15,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 17:54:15,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 17:54:15,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 17:54:15,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 17:54:15,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 17:54:15,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 17:54:15,562 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 17:54:15,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 17:54:15,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 17:54:15,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 17:54:15,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 17:54:15,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 17:54:15,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 17:54:15,565 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 17:54:15,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:54:15,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 17:54:15,566 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 [2025-03-16 17:54:15,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 17:54:15,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 17:54:15,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 17:54:15,802 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 17:54:15,802 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 17:54:15,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/discover_list.c [2025-03-16 17:54:16,957 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b804ae940/98c2cb44e92b408c8003eb893e95b8f5/FLAG2906cd0cb [2025-03-16 17:54:17,213 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 17:54:17,214 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/discover_list.c [2025-03-16 17:54:17,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b804ae940/98c2cb44e92b408c8003eb893e95b8f5/FLAG2906cd0cb [2025-03-16 17:54:17,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b804ae940/98c2cb44e92b408c8003eb893e95b8f5 [2025-03-16 17:54:17,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 17:54:17,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 17:54:17,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 17:54:17,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 17:54:17,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 17:54:17,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d324ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17, skipping insertion in model container [2025-03-16 17:54:17,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 17:54:17,674 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] [2025-03-16 17:54:17,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:54:17,760 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 17:54:17,775 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] [2025-03-16 17:54:17,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:54:17,842 INFO L204 MainTranslator]: Completed translation [2025-03-16 17:54:17,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17 WrapperNode [2025-03-16 17:54:17,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 17:54:17,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 17:54:17,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 17:54:17,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 17:54:17,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,881 INFO L138 Inliner]: procedures = 37, calls = 248, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 509 [2025-03-16 17:54:17,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 17:54:17,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 17:54:17,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 17:54:17,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 17:54:17,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,909 INFO L175 MemorySlicer]: Split 181 memory accesses to 7 slices as follows [2, 4, 12, 11, 100, 10, 42]. 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, 1, 0, 11, 97, 0, 39]. [2025-03-16 17:54:17,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,934 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 17:54:17,947 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 17:54:17,947 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 17:54:17,947 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 17:54:17,947 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (1/1) ... [2025-03-16 17:54:17,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:54:17,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:54:17,971 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) [2025-03-16 17:54:17,973 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 [2025-03-16 17:54:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 17:54:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-16 17:54:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-16 17:54:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-16 17:54:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-16 17:54:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2025-03-16 17:54:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2025-03-16 17:54:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2025-03-16 17:54:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2025-03-16 17:54:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-16 17:54:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-16 17:54:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-16 17:54:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2025-03-16 17:54:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2025-03-16 17:54:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2025-03-16 17:54:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 17:54:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-16 17:54:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-16 17:54:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 17:54:18,098 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 17:54:18,100 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 17:54:18,828 INFO L1322 $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; [2025-03-16 17:54:18,828 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L475: havoc do_discover_list_#t~mem97#1; [2025-03-16 17:54:18,828 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: havoc smp_send_req_#t~nondet4#1; [2025-03-16 17:54:18,828 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L489: havoc do_discover_list_#t~mem102#1; [2025-03-16 17:54:18,829 INFO L1322 $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; [2025-03-16 17:54:18,875 INFO L? ?]: Removed 109 outVars from TransFormulas that were not future-live. [2025-03-16 17:54:18,876 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 17:54:18,885 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 17:54:18,885 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 17:54:18,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:54:18 BoogieIcfgContainer [2025-03-16 17:54:18,886 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 17:54:18,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 17:54:18,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 17:54:18,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 17:54:18,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 05:54:17" (1/3) ... [2025-03-16 17:54:18,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6151762b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:54:18, skipping insertion in model container [2025-03-16 17:54:18,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:54:17" (2/3) ... [2025-03-16 17:54:18,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6151762b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:54:18, skipping insertion in model container [2025-03-16 17:54:18,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:54:18" (3/3) ... [2025-03-16 17:54:18,892 INFO L128 eAbstractionObserver]: Analyzing ICFG discover_list.c [2025-03-16 17:54:18,902 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 17:54:18,903 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG discover_list.c that has 9 procedures, 104 locations, 1 initial locations, 12 loop locations, and 1 error locations. [2025-03-16 17:54:18,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 17:54:18,953 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;@39d1579e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 17:54:18,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 17:54:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 71 states have (on average 1.5352112676056338) internal successors, (109), 72 states have internal predecessors, (109), 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) [2025-03-16 17:54:18,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 17:54:18,965 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:54:18,966 INFO L218 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] [2025-03-16 17:54:18,966 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:54:18,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:54:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1517380969, now seen corresponding path program 1 times [2025-03-16 17:54:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:54:18,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865686646] [2025-03-16 17:54:18,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:54:18,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:54:19,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-16 17:54:20,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-16 17:54:20,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:54:20,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:54:20,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:54:20,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865686646] [2025-03-16 17:54:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865686646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:54:20,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:54:20,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 17:54:20,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031446118] [2025-03-16 17:54:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:54:20,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 17:54:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:54:20,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 17:54:20,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:54:20,419 INFO L87 Difference]: Start difference. First operand has 84 states, 71 states have (on average 1.5352112676056338) internal successors, (109), 72 states have internal predecessors, (109), 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 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-16 17:54:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:54:20,640 INFO L93 Difference]: Finished difference Result 196 states and 301 transitions. [2025-03-16 17:54:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 17:54:20,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 2 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 37 [2025-03-16 17:54:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:54:20,647 INFO L225 Difference]: With dead ends: 196 [2025-03-16 17:54:20,647 INFO L226 Difference]: Without dead ends: 97 [2025-03-16 17:54:20,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 17:54:20,652 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 17:54:20,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 435 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 17:54:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-16 17:54:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 72. [2025-03-16 17:54:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 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) [2025-03-16 17:54:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2025-03-16 17:54:20,689 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 97 transitions. Word has length 37 [2025-03-16 17:54:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:54:20,689 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 97 transitions. [2025-03-16 17:54:20,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-16 17:54:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 97 transitions. [2025-03-16 17:54:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 17:54:20,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:54:20,691 INFO L218 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] [2025-03-16 17:54:20,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 17:54:20,691 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:54:20,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:54:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1752094328, now seen corresponding path program 1 times [2025-03-16 17:54:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:54:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363735025] [2025-03-16 17:54:20,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:54:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:54:21,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-16 17:54:21,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-16 17:54:21,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:54:21,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:54:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:54:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363735025] [2025-03-16 17:54:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363735025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:54:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:54:21,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 17:54:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623074186] [2025-03-16 17:54:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:54:21,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 17:54:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:54:21,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 17:54:21,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:54:21,653 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 17:54:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:54:22,131 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2025-03-16 17:54:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 17:54:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 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 37 [2025-03-16 17:54:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:54:22,133 INFO L225 Difference]: With dead ends: 110 [2025-03-16 17:54:22,133 INFO L226 Difference]: Without dead ends: 72 [2025-03-16 17:54:22,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:54:22,133 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 1 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 17:54:22,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 350 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 17:54:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-16 17:54:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-03-16 17:54:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 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) [2025-03-16 17:54:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 96 transitions. [2025-03-16 17:54:22,138 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 96 transitions. Word has length 37 [2025-03-16 17:54:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:54:22,138 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 96 transitions. [2025-03-16 17:54:22,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 17:54:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 96 transitions. [2025-03-16 17:54:22,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 17:54:22,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:54:22,141 INFO L218 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] [2025-03-16 17:54:22,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 17:54:22,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:54:22,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:54:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2032338791, now seen corresponding path program 1 times [2025-03-16 17:54:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:54:22,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287464768] [2025-03-16 17:54:22,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:54:22,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:54:23,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-16 17:54:23,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-16 17:54:23,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:54:23,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:54:23,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:54:23,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287464768] [2025-03-16 17:54:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287464768] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:54:23,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:54:23,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 17:54:23,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787120155] [2025-03-16 17:54:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:54:23,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:54:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:54:23,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:54:23,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:54:23,280 INFO L87 Difference]: Start difference. First operand 72 states and 96 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 17:54:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:54:23,297 INFO L93 Difference]: Finished difference Result 129 states and 173 transitions. [2025-03-16 17:54:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:54:23,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 2 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 37 [2025-03-16 17:54:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:54:23,299 INFO L225 Difference]: With dead ends: 129 [2025-03-16 17:54:23,299 INFO L226 Difference]: Without dead ends: 73 [2025-03-16 17:54:23,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:54:23,300 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:54:23,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:54:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-16 17:54:23,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2025-03-16 17:54:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 61 states have internal predecessors, (81), 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) [2025-03-16 17:54:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2025-03-16 17:54:23,308 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 37 [2025-03-16 17:54:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:54:23,308 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2025-03-16 17:54:23,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 17:54:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2025-03-16 17:54:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-16 17:54:23,309 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:54:23,309 INFO L218 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] [2025-03-16 17:54:23,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 17:54:23,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:54:23,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:54:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1879924355, now seen corresponding path program 1 times [2025-03-16 17:54:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:54:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606771827] [2025-03-16 17:54:23,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:54:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:54:24,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-16 17:54:24,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-16 17:54:24,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:54:24,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:54:24,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:54:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606771827] [2025-03-16 17:54:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606771827] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:54:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38944267] [2025-03-16 17:54:24,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:54:24,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:54:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:54:24,304 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) [2025-03-16 17:54:24,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 17:54:25,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-16 17:54:25,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-16 17:54:25,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:54:25,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:25,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-16 17:54:25,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:54:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:54:25,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:54:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 17:54:25,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38944267] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 17:54:25,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 17:54:25,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2025-03-16 17:54:25,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275982830] [2025-03-16 17:54:25,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:54:25,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:54:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:54:25,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:54:25,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 17:54:25,663 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2025-03-16 17:54:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:54:25,685 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2025-03-16 17:54:25,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:54:25,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 38 [2025-03-16 17:54:25,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:54:25,690 INFO L225 Difference]: With dead ends: 110 [2025-03-16 17:54:25,690 INFO L226 Difference]: Without dead ends: 74 [2025-03-16 17:54:25,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 17:54:25,690 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 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 [2025-03-16 17:54:25,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:54:25,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-16 17:54:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-03-16 17:54:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 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) [2025-03-16 17:54:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2025-03-16 17:54:25,701 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 38 [2025-03-16 17:54:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:54:25,704 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2025-03-16 17:54:25,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2025-03-16 17:54:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2025-03-16 17:54:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-16 17:54:25,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:54:25,705 INFO L218 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] [2025-03-16 17:54:25,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 17:54:25,905 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 [2025-03-16 17:54:25,906 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:54:25,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:54:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash -507805699, now seen corresponding path program 1 times [2025-03-16 17:54:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:54:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322516312] [2025-03-16 17:54:25,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:54:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:54:26,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-16 17:54:26,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-16 17:54:26,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:54:26,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 17:54:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:54:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322516312] [2025-03-16 17:54:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322516312] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:54:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394202320] [2025-03-16 17:54:26,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:54:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:54:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:54:26,984 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) [2025-03-16 17:54:26,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 17:54:27,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-16 17:54:27,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-16 17:54:27,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:54:27,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:27,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 17:54:27,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:54:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:54:28,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:54:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 17:54:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394202320] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:54:28,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:54:28,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 11 [2025-03-16 17:54:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534893992] [2025-03-16 17:54:28,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:54:28,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-16 17:54:28,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:54:28,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-16 17:54:28,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-16 17:54:28,115 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 17:54:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:54:28,189 INFO L93 Difference]: Finished difference Result 139 states and 188 transitions. [2025-03-16 17:54:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-16 17:54:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2025-03-16 17:54:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:54:28,192 INFO L225 Difference]: With dead ends: 139 [2025-03-16 17:54:28,192 INFO L226 Difference]: Without dead ends: 78 [2025-03-16 17:54:28,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-03-16 17:54:28,193 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:54:28,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 614 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:54:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-16 17:54:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2025-03-16 17:54:28,200 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) [2025-03-16 17:54:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2025-03-16 17:54:28,201 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 39 [2025-03-16 17:54:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:54:28,201 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2025-03-16 17:54:28,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 17:54:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2025-03-16 17:54:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-16 17:54:28,202 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:54:28,202 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 17:54:28,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 17:54:28,402 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 [2025-03-16 17:54:28,402 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:54:28,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:54:28,403 INFO L85 PathProgramCache]: Analyzing trace with hash -320764633, now seen corresponding path program 2 times [2025-03-16 17:54:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:54:28,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513454286] [2025-03-16 17:54:28,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:54:28,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:54:29,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-16 17:54:29,245 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-16 17:54:29,245 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:54:29,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 17:54:29,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:54:29,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513454286] [2025-03-16 17:54:29,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513454286] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:54:29,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751844758] [2025-03-16 17:54:29,505 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:54:29,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:54:29,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:54:29,511 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) [2025-03-16 17:54:29,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 17:54:30,460 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-16 17:54:52,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-16 17:54:52,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:54:52,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:52,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 17:54:52,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:54:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 17:54:52,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:54:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 17:54:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751844758] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:54:52,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:54:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2025-03-16 17:54:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135080029] [2025-03-16 17:54:52,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:54:52,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 17:54:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:54:52,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 17:54:52,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-03-16 17:54:52,935 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 17:54:53,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:54:53,133 INFO L93 Difference]: Finished difference Result 147 states and 196 transitions. [2025-03-16 17:54:53,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 17:54:53,134 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2025-03-16 17:54:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:54:53,135 INFO L225 Difference]: With dead ends: 147 [2025-03-16 17:54:53,135 INFO L226 Difference]: Without dead ends: 83 [2025-03-16 17:54:53,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-03-16 17:54:53,137 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:54:53,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:54:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-03-16 17:54:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-03-16 17:54:53,143 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) [2025-03-16 17:54:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 107 transitions. [2025-03-16 17:54:53,146 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 107 transitions. Word has length 43 [2025-03-16 17:54:53,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:54:53,148 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 107 transitions. [2025-03-16 17:54:53,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 17:54:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 107 transitions. [2025-03-16 17:54:53,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-16 17:54:53,148 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:54:53,148 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:54:53,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 17:54:53,349 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 [2025-03-16 17:54:53,349 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:54:53,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:54:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2055926765, now seen corresponding path program 3 times [2025-03-16 17:54:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:54:53,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176189961] [2025-03-16 17:54:53,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:54:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:54:54,063 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 4 equivalence classes. [2025-03-16 17:54:54,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 48 of 48 statements. [2025-03-16 17:54:54,223 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-16 17:54:54,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:54:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 17:54:54,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:54:54,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176189961] [2025-03-16 17:54:54,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176189961] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:54:54,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509324754] [2025-03-16 17:54:54,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:54:54,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:54:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:54:54,481 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) [2025-03-16 17:54:54,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 17:54:55,439 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 4 equivalence classes.