./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32bbf5b6b15e8e45a78ed01aff570512bbe14911dc5894acdb61cde4404467f0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 01:08:31,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 01:08:31,625 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 01:08:31,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 01:08:31,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 01:08:31,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 01:08:31,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 01:08:31,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 01:08:31,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 01:08:31,660 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 01:08:31,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 01:08:31,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 01:08:31,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 01:08:31,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 01:08:31,661 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 01:08:31,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 01:08:31,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 01:08:31,661 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 01:08:31,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 01:08:31,662 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:08:31,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 01:08:31,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 01:08:31,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 01:08:31,663 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 -> 32bbf5b6b15e8e45a78ed01aff570512bbe14911dc5894acdb61cde4404467f0 [2025-03-04 01:08:31,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 01:08:31,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 01:08:31,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 01:08:31,924 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 01:08:31,924 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 01:08:31,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i [2025-03-04 01:08:33,116 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99f11f5fd/ada8bf87032844bf873c5d73f2c8c0ad/FLAGa8067753e [2025-03-04 01:08:33,352 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 01:08:33,353 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i [2025-03-04 01:08:33,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99f11f5fd/ada8bf87032844bf873c5d73f2c8c0ad/FLAGa8067753e [2025-03-04 01:08:33,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99f11f5fd/ada8bf87032844bf873c5d73f2c8c0ad [2025-03-04 01:08:33,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 01:08:33,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 01:08:33,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 01:08:33,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 01:08:33,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 01:08:33,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:33,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3f5dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33, skipping insertion in model container [2025-03-04 01:08:33,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:33,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 01:08:33,834 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i[916,929] [2025-03-04 01:08:33,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:08:33,890 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 01:08:33,899 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i[916,929] [2025-03-04 01:08:33,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:08:33,947 INFO L204 MainTranslator]: Completed translation [2025-03-04 01:08:33,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33 WrapperNode [2025-03-04 01:08:33,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 01:08:33,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 01:08:33,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 01:08:33,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 01:08:33,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:33,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,024 INFO L138 Inliner]: procedures = 29, calls = 169, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 524 [2025-03-04 01:08:34,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 01:08:34,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 01:08:34,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 01:08:34,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 01:08:34,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,073 INFO L175 MemorySlicer]: Split 131 memory accesses to 8 slices as follows [2, 21, 25, 24, 3, 22, 27, 7]. 21 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 3, 2, 3, 1, 2, 3, 1]. The 18 writes are split as follows [0, 3, 3, 3, 1, 4, 3, 1]. [2025-03-04 01:08:34,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,094 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 01:08:34,113 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 01:08:34,114 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 01:08:34,115 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 01:08:34,115 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (1/1) ... [2025-03-04 01:08:34,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:08:34,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:08:34,153 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) [2025-03-04 01:08:34,156 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 [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 01:08:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 01:08:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-04 01:08:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-04 01:08:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-04 01:08:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 01:08:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 01:08:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 01:08:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 01:08:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 01:08:34,312 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 01:08:34,315 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 01:08:34,730 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L114: havoc property_#t~mem92#1;havoc property_#t~ite106#1;havoc property_#t~mem96#1;havoc property_#t~mem93#1;havoc property_#t~ite95#1;havoc property_#t~mem94#1;havoc property_#t~ite105#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~ite102#1;havoc property_#t~mem101#1;havoc property_#t~mem100#1;havoc property_#t~mem104#1;havoc property_#t~mem103#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~ite113#1;havoc property_#t~mem112#1;havoc property_#t~mem109#1;havoc property_#t~mem110#1;havoc property_#t~short111#1;havoc property_#t~short114#1;havoc property_#t~mem115#1;havoc property_#t~ite125#1;havoc property_#t~mem119#1;havoc property_#t~mem118#1;havoc property_#t~mem116#1;havoc property_#t~mem117#1;havoc property_#t~short120#1;havoc property_#t~ite124#1;havoc property_#t~mem123#1;havoc property_#t~mem121#1;havoc property_#t~mem122#1;havoc property_#t~short126#1;havoc property_#t~mem129#1;havoc property_#t~mem127#1;havoc property_#t~mem128#1;havoc property_#t~bitwise130#1;havoc property_#t~mem131#1;havoc property_#t~ite140#1;havoc property_#t~mem132#1;havoc property_#t~ite137#1;havoc property_#t~mem134#1;havoc property_#t~mem133#1;havoc property_#t~mem136#1;havoc property_#t~mem135#1;havoc property_#t~mem139#1;havoc property_#t~mem138#1;havoc property_#t~short141#1; [2025-03-04 01:08:34,764 INFO L? ?]: Removed 132 outVars from TransFormulas that were not future-live. [2025-03-04 01:08:34,764 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 01:08:34,785 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 01:08:34,785 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 01:08:34,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:08:34 BoogieIcfgContainer [2025-03-04 01:08:34,785 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 01:08:34,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 01:08:34,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 01:08:34,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 01:08:34,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 01:08:33" (1/3) ... [2025-03-04 01:08:34,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de7bab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:08:34, skipping insertion in model container [2025-03-04 01:08:34,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:08:33" (2/3) ... [2025-03-04 01:08:34,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de7bab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:08:34, skipping insertion in model container [2025-03-04 01:08:34,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:08:34" (3/3) ... [2025-03-04 01:08:34,794 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-64.i [2025-03-04 01:08:34,805 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 01:08:34,807 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-64.i that has 2 procedures, 128 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-04 01:08:34,857 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 01:08:34,866 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;@1335cb25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 01:08:34,866 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 01:08:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 106 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:08:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-04 01:08:34,884 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:08:34,884 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:08:34,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:08:34,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:08:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -225622903, now seen corresponding path program 1 times [2025-03-04 01:08:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:08:34,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647854621] [2025-03-04 01:08:34,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:08:34,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:08:35,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:08:35,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:35,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-04 01:08:35,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:08:35,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647854621] [2025-03-04 01:08:35,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647854621] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:08:35,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844256709] [2025-03-04 01:08:35,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:35,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:35,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:08:35,202 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) [2025-03-04 01:08:35,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 01:08:35,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:08:35,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:08:35,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:35,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:35,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 01:08:35,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:08:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-04 01:08:35,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:08:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844256709] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:08:35,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:08:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 01:08:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126546777] [2025-03-04 01:08:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:08:35,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 01:08:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:08:35,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 01:08:35,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:08:35,521 INFO L87 Difference]: Start difference. First operand has 128 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 106 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-04 01:08:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:08:35,555 INFO L93 Difference]: Finished difference Result 250 states and 395 transitions. [2025-03-04 01:08:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 01:08:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2025-03-04 01:08:35,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:08:35,562 INFO L225 Difference]: With dead ends: 250 [2025-03-04 01:08:35,562 INFO L226 Difference]: Without dead ends: 125 [2025-03-04 01:08:35,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:08:35,567 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:08:35,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:08:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-03-04 01:08:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2025-03-04 01:08:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 103 states have internal predecessors, (145), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:08:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2025-03-04 01:08:35,595 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 159 [2025-03-04 01:08:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:08:35,596 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2025-03-04 01:08:35,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-04 01:08:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2025-03-04 01:08:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-04 01:08:35,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:08:35,600 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:08:35,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 01:08:35,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-04 01:08:35,801 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:08:35,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:08:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -687992775, now seen corresponding path program 1 times [2025-03-04 01:08:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:08:35,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814924790] [2025-03-04 01:08:35,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:35,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:08:35,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:08:35,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:08:35,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:35,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:08:36,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:08:36,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814924790] [2025-03-04 01:08:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814924790] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:08:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469811708] [2025-03-04 01:08:36,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:36,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:08:36,246 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) [2025-03-04 01:08:36,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 01:08:36,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:08:36,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:08:36,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:36,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:36,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:08:36,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:08:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-04 01:08:36,487 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:08:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469811708] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:08:36,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:08:36,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-04 01:08:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969403983] [2025-03-04 01:08:36,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:08:36,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:08:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:08:36,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:08:36,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:08:36,488 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:08:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:08:36,541 INFO L93 Difference]: Finished difference Result 249 states and 370 transitions. [2025-03-04 01:08:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:08:36,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2025-03-04 01:08:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:08:36,546 INFO L225 Difference]: With dead ends: 249 [2025-03-04 01:08:36,546 INFO L226 Difference]: Without dead ends: 127 [2025-03-04 01:08:36,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:08:36,547 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:08:36,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 532 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:08:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-03-04 01:08:36,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-03-04 01:08:36,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.4) internal successors, (147), 105 states have internal predecessors, (147), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:08:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 187 transitions. [2025-03-04 01:08:36,561 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 187 transitions. Word has length 159 [2025-03-04 01:08:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:08:36,566 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 187 transitions. [2025-03-04 01:08:36,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:08:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 187 transitions. [2025-03-04 01:08:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-04 01:08:36,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:08:36,568 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:08:36,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 01:08:36,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-04 01:08:36,769 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:08:36,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:08:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash 905360595, now seen corresponding path program 1 times [2025-03-04 01:08:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:08:36,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51791383] [2025-03-04 01:08:36,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:08:36,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-04 01:08:36,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 01:08:36,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:36,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:08:37,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:08:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51791383] [2025-03-04 01:08:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51791383] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:08:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65335456] [2025-03-04 01:08:37,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:37,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:37,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:08:37,065 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) [2025-03-04 01:08:37,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 01:08:37,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-04 01:08:37,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 01:08:37,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:37,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:37,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 01:08:37,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:08:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-04 01:08:37,290 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:08:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65335456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:08:37,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:08:37,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-04 01:08:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217026747] [2025-03-04 01:08:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:08:37,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 01:08:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:08:37,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 01:08:37,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:08:37,291 INFO L87 Difference]: Start difference. First operand 127 states and 187 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:08:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:08:37,338 INFO L93 Difference]: Finished difference Result 254 states and 375 transitions. [2025-03-04 01:08:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 01:08:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2025-03-04 01:08:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:08:37,342 INFO L225 Difference]: With dead ends: 254 [2025-03-04 01:08:37,342 INFO L226 Difference]: Without dead ends: 130 [2025-03-04 01:08:37,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:08:37,343 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:08:37,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 703 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:08:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-03-04 01:08:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-03-04 01:08:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 108 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:08:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 190 transitions. [2025-03-04 01:08:37,359 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 190 transitions. Word has length 161 [2025-03-04 01:08:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:08:37,359 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 190 transitions. [2025-03-04 01:08:37,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:08:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 190 transitions. [2025-03-04 01:08:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-04 01:08:37,364 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:08:37,364 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:08:37,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 01:08:37,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:37,565 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:08:37,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:08:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2106547152, now seen corresponding path program 1 times [2025-03-04 01:08:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:08:37,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162679539] [2025-03-04 01:08:37,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:37,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:08:37,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-04 01:08:37,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-04 01:08:37,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:37,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-04 01:08:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:08:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162679539] [2025-03-04 01:08:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162679539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:08:38,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 01:08:38,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 01:08:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167631705] [2025-03-04 01:08:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:08:38,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 01:08:38,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:08:38,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 01:08:38,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:08:38,225 INFO L87 Difference]: Start difference. First operand 130 states and 190 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:08:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:08:38,675 INFO L93 Difference]: Finished difference Result 485 states and 707 transitions. [2025-03-04 01:08:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 01:08:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2025-03-04 01:08:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:08:38,678 INFO L225 Difference]: With dead ends: 485 [2025-03-04 01:08:38,679 INFO L226 Difference]: Without dead ends: 358 [2025-03-04 01:08:38,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-03-04 01:08:38,681 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 385 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 01:08:38,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 837 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 01:08:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2025-03-04 01:08:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 147. [2025-03-04 01:08:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.408) internal successors, (176), 125 states have internal predecessors, (176), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:08:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 216 transitions. [2025-03-04 01:08:38,698 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 216 transitions. Word has length 162 [2025-03-04 01:08:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:08:38,698 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 216 transitions. [2025-03-04 01:08:38,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:08:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 216 transitions. [2025-03-04 01:08:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-04 01:08:38,703 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:08:38,703 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:08:38,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 01:08:38,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:08:38,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:08:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1624290987, now seen corresponding path program 1 times [2025-03-04 01:08:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:08:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380603318] [2025-03-04 01:08:38,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:38,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:08:38,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-04 01:08:38,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-04 01:08:38,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:38,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:08:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:08:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380603318] [2025-03-04 01:08:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380603318] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:08:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459367551] [2025-03-04 01:08:39,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:39,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:08:39,636 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) [2025-03-04 01:08:39,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 01:08:39,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-04 01:08:39,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-04 01:08:39,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:39,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:39,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 01:08:39,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:08:39,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2025-03-04 01:08:40,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 01:08:40,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-03-04 01:08:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 19 proven. 57 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-04 01:08:40,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 01:08:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:08:41,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459367551] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 01:08:41,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 01:08:41,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2025-03-04 01:08:41,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955553740] [2025-03-04 01:08:41,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 01:08:41,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 01:08:41,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:08:41,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 01:08:41,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2025-03-04 01:08:41,990 INFO L87 Difference]: Start difference. First operand 147 states and 216 transitions. Second operand has 28 states, 25 states have (on average 7.6) internal successors, (190), 27 states have internal predecessors, (190), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 7 states have call successors, (60) [2025-03-04 01:08:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:08:44,139 INFO L93 Difference]: Finished difference Result 642 states and 931 transitions. [2025-03-04 01:08:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-03-04 01:08:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 7.6) internal successors, (190), 27 states have internal predecessors, (190), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 7 states have call successors, (60) Word has length 163 [2025-03-04 01:08:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:08:44,143 INFO L225 Difference]: With dead ends: 642 [2025-03-04 01:08:44,144 INFO L226 Difference]: Without dead ends: 498 [2025-03-04 01:08:44,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=582, Invalid=3450, Unknown=0, NotChecked=0, Total=4032 [2025-03-04 01:08:44,148 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 695 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 01:08:44,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 2671 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 01:08:44,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2025-03-04 01:08:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 366. [2025-03-04 01:08:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 299 states have (on average 1.374581939799331) internal successors, (411), 299 states have internal predecessors, (411), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-04 01:08:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 531 transitions. [2025-03-04 01:08:44,190 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 531 transitions. Word has length 163 [2025-03-04 01:08:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:08:44,191 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 531 transitions. [2025-03-04 01:08:44,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 7.6) internal successors, (190), 27 states have internal predecessors, (190), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 7 states have call successors, (60) [2025-03-04 01:08:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 531 transitions. [2025-03-04 01:08:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-04 01:08:44,193 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:08:44,193 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:08:44,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 01:08:44,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:44,394 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:08:44,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:08:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1089225906, now seen corresponding path program 1 times [2025-03-04 01:08:44,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:08:44,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376950571] [2025-03-04 01:08:44,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:44,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:08:44,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-04 01:08:44,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-04 01:08:44,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:44,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 01:08:44,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014623348] [2025-03-04 01:08:44,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:44,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:44,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:08:44,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:08:44,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 01:08:44,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-04 01:08:44,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-04 01:08:44,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:44,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:08:44,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 01:08:44,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:08:45,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-04 01:08:45,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-03-04 01:08:45,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-03-04 01:08:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 69 proven. 421 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-03-04 01:08:45,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 01:08:54,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:08:54,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376950571] [2025-03-04 01:08:54,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 01:08:54,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014623348] [2025-03-04 01:08:54,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014623348] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:08:54,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:08:54,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2025-03-04 01:08:54,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756702725] [2025-03-04 01:08:54,252 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 01:08:54,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 01:08:54,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:08:54,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 01:08:54,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=65, Unknown=2, NotChecked=0, Total=90 [2025-03-04 01:08:54,254 INFO L87 Difference]: Start difference. First operand 366 states and 531 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-04 01:08:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:08:56,826 INFO L93 Difference]: Finished difference Result 683 states and 980 transitions. [2025-03-04 01:08:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 01:08:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 164 [2025-03-04 01:08:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:08:56,830 INFO L225 Difference]: With dead ends: 683 [2025-03-04 01:08:56,831 INFO L226 Difference]: Without dead ends: 396 [2025-03-04 01:08:56,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=78, Invalid=226, Unknown=2, NotChecked=0, Total=306 [2025-03-04 01:08:56,834 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 177 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:08:56,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 764 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 01:08:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-03-04 01:08:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 382. [2025-03-04 01:08:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 311 states have (on average 1.3536977491961415) internal successors, (421), 311 states have internal predecessors, (421), 60 states have call successors, (60), 10 states have call predecessors, (60), 10 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-04 01:08:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 541 transitions. [2025-03-04 01:08:56,858 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 541 transitions. Word has length 164 [2025-03-04 01:08:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:08:56,859 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 541 transitions. [2025-03-04 01:08:56,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-04 01:08:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 541 transitions. [2025-03-04 01:08:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-04 01:08:56,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:08:56,860 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:08:56,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 01:08:57,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:08:57,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:08:57,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:08:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash -987983437, now seen corresponding path program 1 times [2025-03-04 01:08:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:08:57,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685084156] [2025-03-04 01:08:57,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:08:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:08:57,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-04 01:08:57,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-04 01:08:57,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:08:57,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat