./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.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.graphml --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 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 14:01:40,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 14:01:40,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 14:01:40,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 14:01:40,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 14:01:40,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 14:01:40,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 14:01:40,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 14:01:40,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 14:01:40,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 14:01:40,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 14:01:40,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 14:01:40,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 14:01:40,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 14:01:40,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 14:01:40,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 14:01:40,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 14:01:40,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 14:01:40,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 14:01:40,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 14:01:40,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 14:01:40,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 14:01:40,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 14:01:40,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 14:01:40,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 14:01:40,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 14:01:40,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 14:01:40,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 14:01:40,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 14:01:40,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 14:01:40,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 14:01:40,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 14:01:40,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 14:01:40,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 14:01:40,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 14:01:40,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 14:01:40,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 14:01:40,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 14:01:40,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 14:01:40,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 14:01:40,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 14:01:40,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 14:01:40,348 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 14:01:40,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 14:01:40,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 14:01:40,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 14:01:40,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 14:01:40,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 14:01:40,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 14:01:40,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 14:01:40,350 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 14:01:40,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 14:01:40,351 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 14:01:40,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 14:01:40,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 14:01:40,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 14:01:40,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 14:01:40,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 14:01:40,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 14:01:40,352 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 14:01:40,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 14:01:40,352 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 14:01:40,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 14:01:40,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 14:01:40,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 14:01:40,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 14:01:40,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:01:40,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 14:01:40,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 14:01:40,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 14:01:40,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 14:01:40,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 14:01:40,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 14:01:40,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 14:01:40,354 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 14:01:40,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 14:01:40,355 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 14:01:40,355 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 [2023-02-18 14:01:40,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 14:01:40,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 14:01:40,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 14:01:40,563 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 14:01:40,563 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 14:01:40,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2023-02-18 14:01:41,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 14:01:41,800 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 14:01:41,800 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2023-02-18 14:01:41,807 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc12df63/004b32382f924b4eba0342197f798f69/FLAG8780824bb [2023-02-18 14:01:41,817 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc12df63/004b32382f924b4eba0342197f798f69 [2023-02-18 14:01:41,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 14:01:41,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 14:01:41,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 14:01:41,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 14:01:41,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 14:01:41,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:01:41" (1/1) ... [2023-02-18 14:01:41,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59735c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:41, skipping insertion in model container [2023-02-18 14:01:41,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:01:41" (1/1) ... [2023-02-18 14:01:41,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 14:01:41,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 14:01:41,988 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2023-02-18 14:01:41,991 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2023-02-18 14:01:41,992 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2023-02-18 14:01:41,993 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2023-02-18 14:01:41,993 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2023-02-18 14:01:41,994 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2023-02-18 14:01:41,995 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2023-02-18 14:01:41,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:01:42,003 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 14:01:42,026 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2023-02-18 14:01:42,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2023-02-18 14:01:42,042 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2023-02-18 14:01:42,042 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2023-02-18 14:01:42,043 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2023-02-18 14:01:42,044 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2023-02-18 14:01:42,045 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2023-02-18 14:01:42,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:01:42,070 INFO L208 MainTranslator]: Completed translation [2023-02-18 14:01:42,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42 WrapperNode [2023-02-18 14:01:42,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 14:01:42,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 14:01:42,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 14:01:42,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 14:01:42,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,123 INFO L138 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 150 [2023-02-18 14:01:42,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 14:01:42,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 14:01:42,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 14:01:42,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 14:01:42,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 14:01:42,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 14:01:42,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 14:01:42,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 14:01:42,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (1/1) ... [2023-02-18 14:01:42,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:01:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:01:42,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 14:01:42,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 14:01:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 14:01:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 14:01:42,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 14:01:42,285 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 14:01:42,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 14:01:42,490 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 14:01:42,494 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 14:01:42,494 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2023-02-18 14:01:42,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:01:42 BoogieIcfgContainer [2023-02-18 14:01:42,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 14:01:42,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 14:01:42,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 14:01:42,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 14:01:42,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:01:41" (1/3) ... [2023-02-18 14:01:42,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3c6e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:01:42, skipping insertion in model container [2023-02-18 14:01:42,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:42" (2/3) ... [2023-02-18 14:01:42,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3c6e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:01:42, skipping insertion in model container [2023-02-18 14:01:42,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:01:42" (3/3) ... [2023-02-18 14:01:42,502 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2023-02-18 14:01:42,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 14:01:42,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-02-18 14:01:42,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 14:01:42,562 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1d582639, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 14:01:42,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-02-18 14:01:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 14:01:42,572 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:42,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 14:01:42,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash 891600134, now seen corresponding path program 1 times [2023-02-18 14:01:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:42,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064920762] [2023-02-18 14:01:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:42,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:42,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:42,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064920762] [2023-02-18 14:01:42,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064920762] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:42,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:42,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 14:01:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768049440] [2023-02-18 14:01:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:42,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 14:01:42,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 14:01:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 14:01:42,774 INFO L87 Difference]: Start difference. First operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:42,788 INFO L93 Difference]: Finished difference Result 92 states and 150 transitions. [2023-02-18 14:01:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 14:01:42,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 14:01:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:42,794 INFO L225 Difference]: With dead ends: 92 [2023-02-18 14:01:42,794 INFO L226 Difference]: Without dead ends: 41 [2023-02-18 14:01:42,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 14:01:42,798 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:42,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-18 14:01:42,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-02-18 14:01:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-02-18 14:01:42,820 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2023-02-18 14:01:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:42,820 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-02-18 14:01:42,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-02-18 14:01:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 14:01:42,821 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:42,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:42,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 14:01:42,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1806905862, now seen corresponding path program 1 times [2023-02-18 14:01:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:42,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726991563] [2023-02-18 14:01:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:42,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:42,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:42,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726991563] [2023-02-18 14:01:42,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726991563] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:42,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:42,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 14:01:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073221739] [2023-02-18 14:01:42,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:42,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 14:01:42,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:42,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 14:01:42,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 14:01:42,926 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:42,985 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-02-18 14:01:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 14:01:42,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 14:01:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:42,986 INFO L225 Difference]: With dead ends: 44 [2023-02-18 14:01:42,986 INFO L226 Difference]: Without dead ends: 40 [2023-02-18 14:01:42,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:01:42,987 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 64 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:42,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 37 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-18 14:01:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2023-02-18 14:01:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.25) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-02-18 14:01:42,997 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 7 [2023-02-18 14:01:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:42,998 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-02-18 14:01:42,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-02-18 14:01:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 14:01:42,999 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:42,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:42,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 14:01:43,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 179566605, now seen corresponding path program 1 times [2023-02-18 14:01:43,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:43,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432318550] [2023-02-18 14:01:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:43,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:43,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432318550] [2023-02-18 14:01:43,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432318550] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:43,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:43,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 14:01:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499204269] [2023-02-18 14:01:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 14:01:43,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 14:01:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 14:01:43,185 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:43,235 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-02-18 14:01:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 14:01:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-18 14:01:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:43,236 INFO L225 Difference]: With dead ends: 37 [2023-02-18 14:01:43,236 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 14:01:43,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:01:43,237 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:43,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 67 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 14:01:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-18 14:01:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-02-18 14:01:43,242 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 8 [2023-02-18 14:01:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:43,242 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-02-18 14:01:43,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-02-18 14:01:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 14:01:43,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:43,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:43,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 14:01:43,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:43,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:43,244 INFO L85 PathProgramCache]: Analyzing trace with hash 711412120, now seen corresponding path program 1 times [2023-02-18 14:01:43,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:43,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979802343] [2023-02-18 14:01:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:43,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979802343] [2023-02-18 14:01:43,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979802343] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:43,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:43,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 14:01:43,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172102484] [2023-02-18 14:01:43,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:43,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 14:01:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:43,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 14:01:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:01:43,351 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:43,444 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2023-02-18 14:01:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 14:01:43,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 14:01:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:43,445 INFO L225 Difference]: With dead ends: 60 [2023-02-18 14:01:43,445 INFO L226 Difference]: Without dead ends: 58 [2023-02-18 14:01:43,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 14:01:43,446 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 42 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:43,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 71 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:01:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-18 14:01:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2023-02-18 14:01:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-18 14:01:43,452 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 10 [2023-02-18 14:01:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:43,453 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-18 14:01:43,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-18 14:01:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 14:01:43,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:43,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:43,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 14:01:43,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2056579816, now seen corresponding path program 1 times [2023-02-18 14:01:43,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:43,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564841418] [2023-02-18 14:01:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:43,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:43,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564841418] [2023-02-18 14:01:43,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564841418] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:43,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:43,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 14:01:43,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853107742] [2023-02-18 14:01:43,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:43,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 14:01:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 14:01:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 14:01:43,665 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:43,717 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2023-02-18 14:01:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 14:01:43,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 14:01:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:43,720 INFO L225 Difference]: With dead ends: 42 [2023-02-18 14:01:43,720 INFO L226 Difference]: Without dead ends: 40 [2023-02-18 14:01:43,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:01:43,725 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:43,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 70 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-18 14:01:43,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-02-18 14:01:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-02-18 14:01:43,735 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 11 [2023-02-18 14:01:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:43,735 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-02-18 14:01:43,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-02-18 14:01:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 14:01:43,736 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:43,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:43,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 14:01:43,737 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:43,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1285114177, now seen corresponding path program 1 times [2023-02-18 14:01:43,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:43,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581756201] [2023-02-18 14:01:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:43,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:43,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:43,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581756201] [2023-02-18 14:01:43,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581756201] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:43,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:43,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 14:01:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698920481] [2023-02-18 14:01:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:43,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 14:01:43,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:43,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 14:01:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:01:43,809 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:43,923 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2023-02-18 14:01:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 14:01:43,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 14:01:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:43,926 INFO L225 Difference]: With dead ends: 55 [2023-02-18 14:01:43,926 INFO L226 Difference]: Without dead ends: 43 [2023-02-18 14:01:43,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 14:01:43,928 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:43,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:01:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-18 14:01:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-02-18 14:01:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-18 14:01:43,935 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 14 [2023-02-18 14:01:43,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:43,936 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-18 14:01:43,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:43,936 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-18 14:01:43,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 14:01:43,937 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:43,937 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:43,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 14:01:43,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:43,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1621160418, now seen corresponding path program 1 times [2023-02-18 14:01:43,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:43,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107480878] [2023-02-18 14:01:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:44,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:44,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107480878] [2023-02-18 14:01:44,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107480878] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:01:44,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152478032] [2023-02-18 14:01:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:44,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:01:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:01:44,053 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) [2023-02-18 14:01:44,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 14:01:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:44,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 14:01:44,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:01:44,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:44,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:44,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-18 14:01:44,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:44,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:44,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-18 14:01:44,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 14:01:44,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 14:01:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:44,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:01:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:44,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152478032] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:01:44,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:01:44,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-02-18 14:01:44,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597496275] [2023-02-18 14:01:44,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:01:44,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 14:01:44,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:44,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 14:01:44,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 14:01:44,252 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:44,325 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2023-02-18 14:01:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 14:01:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 14:01:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:44,326 INFO L225 Difference]: With dead ends: 59 [2023-02-18 14:01:44,326 INFO L226 Difference]: Without dead ends: 37 [2023-02-18 14:01:44,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-18 14:01:44,326 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:44,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 122 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:01:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-18 14:01:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-18 14:01:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-02-18 14:01:44,331 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2023-02-18 14:01:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:44,331 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-02-18 14:01:44,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:01:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-02-18 14:01:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 14:01:44,332 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:44,332 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:44,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 14:01:44,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:01:44,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:01:44,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1036168340, now seen corresponding path program 1 times [2023-02-18 14:01:44,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:44,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983409801] [2023-02-18 14:01:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:44,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:45,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:45,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983409801] [2023-02-18 14:01:45,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983409801] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:01:45,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347328827] [2023-02-18 14:01:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:45,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:01:45,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:01:45,495 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) [2023-02-18 14:01:45,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 14:01:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:45,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-18 14:01:45,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:01:45,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 14:01:45,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 14:01:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:45,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2023-02-18 14:01:45,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:45,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:45,683 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:01:45,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-02-18 14:01:45,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2023-02-18 14:01:45,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-02-18 14:01:45,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-02-18 14:01:45,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:45,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 14:01:45,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:01:45,748 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:45,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 187 [2023-02-18 14:01:45,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 134 [2023-02-18 14:01:45,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 178 [2023-02-18 14:01:45,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 155 [2023-02-18 14:01:45,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:45,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2023-02-18 14:01:45,821 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:45,823 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:45,942 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:45,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 28 treesize of output 19 [2023-02-18 14:01:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:45,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:01:45,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:45,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-02-18 14:01:45,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 51 [2023-02-18 14:01:45,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-02-18 14:01:46,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:46,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 192 [2023-02-18 14:01:46,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 307 [2023-02-18 14:01:46,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 288 [2023-02-18 14:01:47,123 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:01:47,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:47,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 694 treesize of output 789 [2023-02-18 14:01:47,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 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 3446 treesize of output 3430 [2023-02-18 14:01:47,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 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 22183 treesize of output 22146 [2023-02-18 14:01:47,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22108 treesize of output 21932 [2023-02-18 14:01:47,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21932 treesize of output 21876 [2023-02-18 14:01:47,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21876 treesize of output 21812 [2023-02-18 14:01:47,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:47,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 21812 treesize of output 22513 [2023-02-18 14:01:47,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21784 treesize of output 21776 [2023-02-18 14:01:47,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21776 treesize of output 21744 [2023-02-18 14:01:47,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21756 treesize of output 21704 [2023-02-18 14:01:47,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21651 treesize of output 21579 [2023-02-18 14:01:47,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21588 treesize of output 21560 [2023-02-18 14:01:47,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21531 treesize of output 20499 [2023-02-18 14:01:47,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20499 treesize of output 18299 [2023-02-18 14:01:47,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18299 treesize of output 17715 [2023-02-18 14:01:47,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17715 treesize of output 17427 [2023-02-18 14:01:47,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17436 treesize of output 17136 [2023-02-18 14:01:47,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16835 treesize of output 16683 [2023-02-18 14:01:47,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16683 treesize of output 16643 [2023-02-18 14:01:47,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17122 treesize of output 17092 [2023-02-18 14:01:48,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17071 treesize of output 17055 [2023-02-18 14:01:48,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17055 treesize of output 17039 [2023-02-18 14:01:48,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17039 treesize of output 17023 [2023-02-18 14:01:48,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17032 treesize of output 17020 [2023-02-18 14:01:48,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17007 treesize of output 16991 [2023-02-18 14:01:48,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16991 treesize of output 16959 [2023-02-18 14:01:48,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16968 treesize of output 16952 [2023-02-18 14:01:48,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16935 treesize of output 16931 [2023-02-18 14:01:48,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16931 treesize of output 16883 [2023-02-18 14:01:48,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16883 treesize of output 16867 [2023-02-18 14:01:48,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16867 treesize of output 16859 [2023-02-18 14:01:48,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16859 treesize of output 16855 [2023-02-18 14:01:48,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16855 treesize of output 16839 [2023-02-18 14:01:48,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16848 treesize of output 16832