./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/sll-token-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 f6961864fd80b1152371f3ae9fd5697ae273a1dc ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/sll-token-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 f6961864fd80b1152371f3ae9fd5697ae273a1dc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 02:26:21,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:26:21,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:26:21,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:26:21,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:26:21,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:26:21,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:26:21,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:26:21,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:26:21,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:26:21,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:26:21,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:26:21,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:26:21,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:26:21,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:26:21,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:26:21,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:26:21,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:26:21,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:26:21,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:26:21,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:26:21,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:26:21,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:26:21,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:26:21,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:26:21,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:26:21,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:26:21,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:26:21,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:26:21,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:26:21,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:26:21,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:26:21,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:26:21,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:26:21,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:26:21,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:26:21,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:26:21,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:26:21,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:26:21,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:26:21,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:26:21,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:26:21,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:26:21,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:26:21,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:26:21,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:26:21,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:26:21,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:26:21,275 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:26:21,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:26:21,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:26:21,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:26:21,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:26:21,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:26:21,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:26:21,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:26:21,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:26:21,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:26:21,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:26:21,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:26:21,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:26:21,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:26:21,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:26:21,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:26:21,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:26:21,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:26:21,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:26:21,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:26:21,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:26:21,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:26:21,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:26:21,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:26:21,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6961864fd80b1152371f3ae9fd5697ae273a1dc [2021-08-26 02:26:21,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:26:21,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:26:21,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:26:21,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:26:21,550 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:26:21,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-2.i [2021-08-26 02:26:21,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3ee997b/e1661bb7fdc0436b83130a622dbece59/FLAG586f62906 [2021-08-26 02:26:21,998 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:26:21,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i [2021-08-26 02:26:22,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3ee997b/e1661bb7fdc0436b83130a622dbece59/FLAG586f62906 [2021-08-26 02:26:22,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3ee997b/e1661bb7fdc0436b83130a622dbece59 [2021-08-26 02:26:22,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:26:22,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:26:22,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:26:22,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:26:22,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:26:22,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58dd7be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22, skipping insertion in model container [2021-08-26 02:26:22,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:26:22,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:26:22,248 WARN L228 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/sll-token-2.i[22162,22175] [2021-08-26 02:26:22,251 WARN L228 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/sll-token-2.i[22311,22324] [2021-08-26 02:26:22,252 WARN L228 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/sll-token-2.i[22402,22415] [2021-08-26 02:26:22,253 WARN L228 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/sll-token-2.i[22484,22497] [2021-08-26 02:26:22,253 WARN L228 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/sll-token-2.i[22562,22575] [2021-08-26 02:26:22,254 WARN L228 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/sll-token-2.i[22708,22721] [2021-08-26 02:26:22,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:26:22,261 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:26:22,294 WARN L228 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/sll-token-2.i[22162,22175] [2021-08-26 02:26:22,297 WARN L228 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/sll-token-2.i[22311,22324] [2021-08-26 02:26:22,298 WARN L228 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/sll-token-2.i[22402,22415] [2021-08-26 02:26:22,300 WARN L228 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/sll-token-2.i[22484,22497] [2021-08-26 02:26:22,302 WARN L228 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/sll-token-2.i[22562,22575] [2021-08-26 02:26:22,303 WARN L228 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/sll-token-2.i[22708,22721] [2021-08-26 02:26:22,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:26:22,322 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:26:22,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22 WrapperNode [2021-08-26 02:26:22,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:26:22,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:26:22,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:26:22,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:26:22,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:26:22,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:26:22,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:26:22,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:26:22,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:26:22,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:26:22,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:26:22,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:26:22,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (1/1) ... [2021-08-26 02:26:22,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:26:22,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:22,419 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) [2021-08-26 02:26:22,434 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 [2021-08-26 02:26:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 02:26:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 02:26:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:26:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:26:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:26:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:26:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:26:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:26:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:26:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:26:22,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:26:22,813 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 02:26:22,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:26:22 BoogieIcfgContainer [2021-08-26 02:26:22,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:26:22,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:26:22,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:26:22,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:26:22,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:26:22" (1/3) ... [2021-08-26 02:26:22,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae1cb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:26:22, skipping insertion in model container [2021-08-26 02:26:22,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:26:22" (2/3) ... [2021-08-26 02:26:22,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae1cb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:26:22, skipping insertion in model container [2021-08-26 02:26:22,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:26:22" (3/3) ... [2021-08-26 02:26:22,833 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2021-08-26 02:26:22,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:26:22,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 02:26:22,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:26:22,881 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:26:22,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 02:26:22,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 43 states have internal predecessors, (67), 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) [2021-08-26 02:26:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 02:26:22,897 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:22,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 02:26:22,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash 890337990, now seen corresponding path program 1 times [2021-08-26 02:26:22,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:22,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955774789] [2021-08-26 02:26:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:22,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:23,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:23,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955774789] [2021-08-26 02:26:23,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955774789] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:23,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:23,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 02:26:23,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483180982] [2021-08-26 02:26:23,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 02:26:23,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 02:26:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 02:26:23,062 INFO L87 Difference]: Start difference. First operand has 44 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 43 states have internal predecessors, (67), 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) [2021-08-26 02:26:23,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:23,077 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2021-08-26 02:26:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 02:26:23,078 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 [2021-08-26 02:26:23,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:23,083 INFO L225 Difference]: With dead ends: 86 [2021-08-26 02:26:23,083 INFO L226 Difference]: Without dead ends: 39 [2021-08-26 02:26:23,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 02:26:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-26 02:26:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-26 02:26:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 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) [2021-08-26 02:26:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-08-26 02:26:23,120 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 6 [2021-08-26 02:26:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:23,121 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-08-26 02:26:23,121 INFO L471 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) [2021-08-26 02:26:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-08-26 02:26:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 02:26:23,121 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:23,121 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 02:26:23,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:26:23,122 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:23,124 INFO L82 PathProgramCache]: Analyzing trace with hash 889571369, now seen corresponding path program 1 times [2021-08-26 02:26:23,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:23,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197776984] [2021-08-26 02:26:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:23,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:23,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:23,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197776984] [2021-08-26 02:26:23,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197776984] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:23,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:23,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:26:23,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71386005] [2021-08-26 02:26:23,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:26:23,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:26:23,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:26:23,185 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-08-26 02:26:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:23,215 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-08-26 02:26:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:26:23,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2021-08-26 02:26:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:23,216 INFO L225 Difference]: With dead ends: 39 [2021-08-26 02:26:23,216 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 02:26:23,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:26:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 02:26:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-26 02:26:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 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) [2021-08-26 02:26:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-08-26 02:26:23,220 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2021-08-26 02:26:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:23,220 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-08-26 02:26:23,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-08-26 02:26:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-08-26 02:26:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 02:26:23,221 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:23,221 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:23,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 02:26:23,222 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865149, now seen corresponding path program 1 times [2021-08-26 02:26:23,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:23,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836161934] [2021-08-26 02:26:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:23,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:23,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:23,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836161934] [2021-08-26 02:26:23,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836161934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:23,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:23,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:26:23,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719950381] [2021-08-26 02:26:23,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:26:23,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:26:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:26:23,284 INFO L87 Difference]: Start difference. First operand 37 states and 39 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) [2021-08-26 02:26:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:23,333 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-08-26 02:26:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:26:23,333 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 [2021-08-26 02:26:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:23,334 INFO L225 Difference]: With dead ends: 63 [2021-08-26 02:26:23,334 INFO L226 Difference]: Without dead ends: 61 [2021-08-26 02:26:23,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:26:23,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-26 02:26:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2021-08-26 02:26:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 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) [2021-08-26 02:26:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-08-26 02:26:23,337 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-08-26 02:26:23,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:23,337 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-08-26 02:26:23,337 INFO L471 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) [2021-08-26 02:26:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-08-26 02:26:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 02:26:23,338 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:23,338 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:23,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 02:26:23,338 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash -913382283, now seen corresponding path program 1 times [2021-08-26 02:26:23,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:23,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427215755] [2021-08-26 02:26:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:23,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:23,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:23,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427215755] [2021-08-26 02:26:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427215755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:23,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:23,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:26:23,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918377205] [2021-08-26 02:26:23,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:26:23,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:26:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:26:23,380 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-26 02:26:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:23,443 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-08-26 02:26:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:26:23,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-08-26 02:26:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:23,445 INFO L225 Difference]: With dead ends: 35 [2021-08-26 02:26:23,445 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 02:26:23,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:26:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 02:26:23,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-26 02:26:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-08-26 02:26:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-08-26 02:26:23,455 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12 [2021-08-26 02:26:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:23,455 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-08-26 02:26:23,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-26 02:26:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-08-26 02:26:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 02:26:23,456 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:23,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:23,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 02:26:23,457 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:23,458 INFO L82 PathProgramCache]: Analyzing trace with hash -913344547, now seen corresponding path program 1 times [2021-08-26 02:26:23,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:23,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496105604] [2021-08-26 02:26:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:23,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:23,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:23,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496105604] [2021-08-26 02:26:23,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496105604] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:23,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:23,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 02:26:23,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987100419] [2021-08-26 02:26:23,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:26:23,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:26:23,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:26:23,639 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2021-08-26 02:26:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:23,821 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-08-26 02:26:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:26:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2021-08-26 02:26:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:23,823 INFO L225 Difference]: With dead ends: 50 [2021-08-26 02:26:23,823 INFO L226 Difference]: Without dead ends: 48 [2021-08-26 02:26:23,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:26:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-26 02:26:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-08-26 02:26:23,830 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) [2021-08-26 02:26:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-08-26 02:26:23,831 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 12 [2021-08-26 02:26:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:23,832 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-08-26 02:26:23,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2021-08-26 02:26:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-08-26 02:26:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 02:26:23,833 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:23,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:23,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 02:26:23,833 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash -313255267, now seen corresponding path program 1 times [2021-08-26 02:26:23,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:23,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334490327] [2021-08-26 02:26:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:23,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:23,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:23,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334490327] [2021-08-26 02:26:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334490327] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:23,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:23,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 02:26:23,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566012522] [2021-08-26 02:26:23,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 02:26:23,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 02:26:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:26:23,970 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-08-26 02:26:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:24,081 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2021-08-26 02:26:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:26:24,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-08-26 02:26:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:24,084 INFO L225 Difference]: With dead ends: 66 [2021-08-26 02:26:24,084 INFO L226 Difference]: Without dead ends: 64 [2021-08-26 02:26:24,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 02:26:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-26 02:26:24,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2021-08-26 02:26:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 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) [2021-08-26 02:26:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-08-26 02:26:24,094 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2021-08-26 02:26:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:24,094 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-08-26 02:26:24,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-08-26 02:26:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-08-26 02:26:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 02:26:24,095 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:24,095 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 02:26:24,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:24,096 INFO L82 PathProgramCache]: Analyzing trace with hash -648614522, now seen corresponding path program 1 times [2021-08-26 02:26:24,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:24,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025586155] [2021-08-26 02:26:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:24,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:24,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:24,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025586155] [2021-08-26 02:26:24,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025586155] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:24,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753977271] [2021-08-26 02:26:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:24,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:24,205 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) [2021-08-26 02:26:24,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 02:26:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:24,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 02:26:24,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:24,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:24,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:24,471 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:24,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:24,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:24,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2021-08-26 02:26:24,713 INFO L354 Elim1Store]: treesize reduction 118, result has 13.9 percent of original size [2021-08-26 02:26:24,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 55 [2021-08-26 02:26:24,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:24,736 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-08-26 02:26:24,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2021-08-26 02:26:24,748 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-08-26 02:26:24,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 43 [2021-08-26 02:26:25,026 INFO L354 Elim1Store]: treesize reduction 33, result has 10.8 percent of original size [2021-08-26 02:26:25,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-08-26 02:26:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:25,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753977271] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:25,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:25,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-26 02:26:25,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619824978] [2021-08-26 02:26:25,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 02:26:25,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 02:26:25,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-26 02:26:25,037 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2021-08-26 02:26:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:25,207 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-08-26 02:26:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:26:25,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 16 [2021-08-26 02:26:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:25,208 INFO L225 Difference]: With dead ends: 60 [2021-08-26 02:26:25,208 INFO L226 Difference]: Without dead ends: 58 [2021-08-26 02:26:25,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:26:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-26 02:26:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2021-08-26 02:26:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 49 states have internal predecessors, (55), 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) [2021-08-26 02:26:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-08-26 02:26:25,211 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 16 [2021-08-26 02:26:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:25,212 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-08-26 02:26:25,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2021-08-26 02:26:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-08-26 02:26:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 02:26:25,212 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:25,213 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:25,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 02:26:25,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:25,425 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:25,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:25,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1909855756, now seen corresponding path program 1 times [2021-08-26 02:26:25,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:25,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39094048] [2021-08-26 02:26:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:25,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:25,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:25,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39094048] [2021-08-26 02:26:25,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39094048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:25,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:25,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 02:26:25,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754452138] [2021-08-26 02:26:25,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:26:25,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:26:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:26:25,511 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-26 02:26:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:25,590 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-08-26 02:26:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:26:25,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2021-08-26 02:26:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:25,591 INFO L225 Difference]: With dead ends: 76 [2021-08-26 02:26:25,591 INFO L226 Difference]: Without dead ends: 50 [2021-08-26 02:26:25,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-26 02:26:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-26 02:26:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-08-26 02:26:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.148936170212766) internal successors, (54), 49 states have internal predecessors, (54), 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) [2021-08-26 02:26:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-08-26 02:26:25,594 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 18 [2021-08-26 02:26:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:25,594 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-08-26 02:26:25,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-26 02:26:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-08-26 02:26:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 02:26:25,595 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:25,595 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:25,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 02:26:25,595 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:25,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1000772550, now seen corresponding path program 1 times [2021-08-26 02:26:25,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:25,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795805854] [2021-08-26 02:26:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:25,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:25,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:25,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795805854] [2021-08-26 02:26:25,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795805854] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:25,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626563176] [2021-08-26 02:26:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:25,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:25,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:25,678 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) [2021-08-26 02:26:25,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 02:26:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:25,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 02:26:25,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:25,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:25,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:25,862 INFO L354 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2021-08-26 02:26:25,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 39 treesize of output 39 [2021-08-26 02:26:25,896 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:25,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:26,042 INFO L354 Elim1Store]: treesize reduction 118, result has 13.9 percent of original size [2021-08-26 02:26:26,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 55 [2021-08-26 02:26:26,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:26,061 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-08-26 02:26:26,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2021-08-26 02:26:26,070 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-08-26 02:26:26,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 43 [2021-08-26 02:26:26,210 INFO L354 Elim1Store]: treesize reduction 33, result has 10.8 percent of original size [2021-08-26 02:26:26,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-08-26 02:26:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:26,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626563176] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:26,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:26,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-08-26 02:26:26,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449312674] [2021-08-26 02:26:26,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 02:26:26,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:26,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 02:26:26,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 02:26:26,234 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-08-26 02:26:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:26,371 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-08-26 02:26:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:26:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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 20 [2021-08-26 02:26:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:26,372 INFO L225 Difference]: With dead ends: 68 [2021-08-26 02:26:26,372 INFO L226 Difference]: Without dead ends: 52 [2021-08-26 02:26:26,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:26:26,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-26 02:26:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-08-26 02:26:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 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) [2021-08-26 02:26:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-08-26 02:26:26,375 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2021-08-26 02:26:26,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:26,375 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-08-26 02:26:26,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-08-26 02:26:26,375 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-08-26 02:26:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 02:26:26,375 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:26,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:26,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:26,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-26 02:26:26,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1552465966, now seen corresponding path program 1 times [2021-08-26 02:26:26,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:26,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219558967] [2021-08-26 02:26:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:26,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:26,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:26,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219558967] [2021-08-26 02:26:26,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219558967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:26:26,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:26,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:26:26,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986302420] [2021-08-26 02:26:26,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:26:26,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:26,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:26:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:26:26,632 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-08-26 02:26:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:26,664 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-08-26 02:26:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:26:26,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-08-26 02:26:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:26,665 INFO L225 Difference]: With dead ends: 50 [2021-08-26 02:26:26,665 INFO L226 Difference]: Without dead ends: 31 [2021-08-26 02:26:26,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:26:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-26 02:26:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-26 02:26:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 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) [2021-08-26 02:26:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-08-26 02:26:26,668 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 22 [2021-08-26 02:26:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:26,668 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-08-26 02:26:26,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-08-26 02:26:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-08-26 02:26:26,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 02:26:26,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:26,669 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:26,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 02:26:26,670 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:26,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1970202869, now seen corresponding path program 1 times [2021-08-26 02:26:26,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:26,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725160079] [2021-08-26 02:26:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:26,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:26,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:26,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725160079] [2021-08-26 02:26:26,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725160079] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:26,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354395483] [2021-08-26 02:26:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:26,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:26,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:26,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 02:26:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:26,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 02:26:26,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:26,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:27,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:27,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:27,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:27,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:27,055 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:27,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:27,255 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-08-26 02:26:27,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 172 [2021-08-26 02:26:27,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:27,292 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-08-26 02:26:27,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 211 treesize of output 133 [2021-08-26 02:26:27,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:27,334 INFO L354 Elim1Store]: treesize reduction 258, result has 11.0 percent of original size [2021-08-26 02:26:27,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 191 treesize of output 137 [2021-08-26 02:26:27,361 INFO L354 Elim1Store]: treesize reduction 156, result has 13.8 percent of original size [2021-08-26 02:26:27,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 101 [2021-08-26 02:26:27,369 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-08-26 02:26:27,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 84 [2021-08-26 02:26:27,652 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-08-26 02:26:27,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 66 [2021-08-26 02:26:27,658 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:26:27,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 48 [2021-08-26 02:26:27,707 INFO L354 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2021-08-26 02:26:27,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 23 [2021-08-26 02:26:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:27,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354395483] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:27,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:27,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2021-08-26 02:26:27,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686946317] [2021-08-26 02:26:27,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 02:26:27,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 02:26:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:26:27,717 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-08-26 02:26:27,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:27,848 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-08-26 02:26:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:26:27,849 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 22 [2021-08-26 02:26:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:27,849 INFO L225 Difference]: With dead ends: 66 [2021-08-26 02:26:27,849 INFO L226 Difference]: Without dead ends: 50 [2021-08-26 02:26:27,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-26 02:26:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-26 02:26:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2021-08-26 02:26:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 45 states have internal predecessors, (48), 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) [2021-08-26 02:26:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-08-26 02:26:27,852 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 22 [2021-08-26 02:26:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:27,852 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-08-26 02:26:27,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-08-26 02:26:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-08-26 02:26:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 02:26:27,853 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:27,853 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:27,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:28,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:28,065 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:28,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:28,065 INFO L82 PathProgramCache]: Analyzing trace with hash -882557003, now seen corresponding path program 1 times [2021-08-26 02:26:28,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:28,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025796456] [2021-08-26 02:26:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:28,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:28,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:28,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025796456] [2021-08-26 02:26:28,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025796456] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:28,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327534473] [2021-08-26 02:26:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:28,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:28,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:28,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:28,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 02:26:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:28,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 02:26:28,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:28,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:28,474 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:28,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:28,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:28,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:28,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 194 treesize of output 136 [2021-08-26 02:26:28,621 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:26:28,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 167 treesize of output 101 [2021-08-26 02:26:28,642 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-08-26 02:26:28,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 147 treesize of output 95 [2021-08-26 02:26:28,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 69 [2021-08-26 02:26:28,656 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-08-26 02:26:28,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 79 [2021-08-26 02:26:28,986 INFO L354 Elim1Store]: treesize reduction 29, result has 21.6 percent of original size [2021-08-26 02:26:28,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 54 [2021-08-26 02:26:28,995 INFO L354 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2021-08-26 02:26:28,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-08-26 02:26:29,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:29,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327534473] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:29,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:29,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2021-08-26 02:26:29,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452012103] [2021-08-26 02:26:29,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 02:26:29,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 02:26:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:26:29,020 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 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) [2021-08-26 02:26:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:29,176 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-08-26 02:26:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 02:26:29,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 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 26 [2021-08-26 02:26:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:29,176 INFO L225 Difference]: With dead ends: 54 [2021-08-26 02:26:29,176 INFO L226 Difference]: Without dead ends: 35 [2021-08-26 02:26:29,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 138.2ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-08-26 02:26:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-26 02:26:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-08-26 02:26:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 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) [2021-08-26 02:26:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-08-26 02:26:29,179 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 26 [2021-08-26 02:26:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:29,179 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-08-26 02:26:29,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 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) [2021-08-26 02:26:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-08-26 02:26:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 02:26:29,180 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:29,180 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:29,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:29,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:29,385 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1994252450, now seen corresponding path program 2 times [2021-08-26 02:26:29,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:29,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052774287] [2021-08-26 02:26:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:29,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:29,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:29,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052774287] [2021-08-26 02:26:29,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052774287] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:29,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181160315] [2021-08-26 02:26:29,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:26:29,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:29,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:29,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:29,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 02:26:29,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:26:29,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:26:29,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-26 02:26:29,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:29,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:29,913 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:29,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:29,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:29,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:29,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-26 02:26:30,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:30,088 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:26:30,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 220 treesize of output 138 [2021-08-26 02:26:30,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:30,111 INFO L354 Elim1Store]: treesize reduction 78, result has 19.6 percent of original size [2021-08-26 02:26:30,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 190 treesize of output 153 [2021-08-26 02:26:30,142 INFO L354 Elim1Store]: treesize reduction 126, result has 16.6 percent of original size [2021-08-26 02:26:30,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 119 [2021-08-26 02:26:30,165 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:26:30,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 120 [2021-08-26 02:26:30,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:30,574 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-08-26 02:26:30,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 372 treesize of output 204 [2021-08-26 02:26:30,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:30,617 INFO L354 Elim1Store]: treesize reduction 86, result has 14.9 percent of original size [2021-08-26 02:26:30,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 333 treesize of output 169 [2021-08-26 02:26:30,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:30,637 INFO L354 Elim1Store]: treesize reduction 81, result has 12.0 percent of original size [2021-08-26 02:26:30,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 309 [2021-08-26 02:26:30,656 INFO L354 Elim1Store]: treesize reduction 175, result has 6.9 percent of original size [2021-08-26 02:26:30,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 303 treesize of output 267 [2021-08-26 02:26:30,680 INFO L354 Elim1Store]: treesize reduction 156, result has 15.7 percent of original size [2021-08-26 02:26:30,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 251 [2021-08-26 02:26:30,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:30,705 INFO L354 Elim1Store]: treesize reduction 198, result has 8.8 percent of original size [2021-08-26 02:26:30,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 245 treesize of output 167 [2021-08-26 02:26:30,716 INFO L354 Elim1Store]: treesize reduction 105, result has 13.2 percent of original size [2021-08-26 02:26:30,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 145 [2021-08-26 02:26:31,152 INFO L354 Elim1Store]: treesize reduction 33, result has 10.8 percent of original size [2021-08-26 02:26:31,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 88 [2021-08-26 02:26:31,158 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:26:31,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 63 [2021-08-26 02:26:31,370 INFO L354 Elim1Store]: treesize reduction 97, result has 19.8 percent of original size [2021-08-26 02:26:31,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 57 [2021-08-26 02:26:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:31,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181160315] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:31,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:31,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-08-26 02:26:31,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258248734] [2021-08-26 02:26:31,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 02:26:31,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 02:26:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-08-26 02:26:31,384 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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) [2021-08-26 02:26:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:31,782 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2021-08-26 02:26:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 02:26:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 26 [2021-08-26 02:26:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:31,783 INFO L225 Difference]: With dead ends: 72 [2021-08-26 02:26:31,783 INFO L226 Difference]: Without dead ends: 70 [2021-08-26 02:26:31,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 457.0ms TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-08-26 02:26:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-26 02:26:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 41. [2021-08-26 02:26:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 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) [2021-08-26 02:26:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-08-26 02:26:31,791 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 26 [2021-08-26 02:26:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:31,791 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-08-26 02:26:31,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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) [2021-08-26 02:26:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-08-26 02:26:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 02:26:31,792 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:31,792 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:31,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:32,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 02:26:32,006 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:32,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:32,006 INFO L82 PathProgramCache]: Analyzing trace with hash -866838114, now seen corresponding path program 2 times [2021-08-26 02:26:32,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:32,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304158394] [2021-08-26 02:26:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:32,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:32,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:32,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304158394] [2021-08-26 02:26:32,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304158394] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:32,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558146829] [2021-08-26 02:26:32,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:26:32,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:32,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:32,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 02:26:32,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:26:32,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:26:32,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 51 conjunts are in the unsatisfiable core [2021-08-26 02:26:32,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:32,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:32,631 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:32,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:32,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-26 02:26:32,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:32,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:32,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:32,805 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:26:32,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 220 treesize of output 138 [2021-08-26 02:26:32,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:32,834 INFO L354 Elim1Store]: treesize reduction 78, result has 19.6 percent of original size [2021-08-26 02:26:32,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 190 treesize of output 153 [2021-08-26 02:26:32,863 INFO L354 Elim1Store]: treesize reduction 126, result has 16.6 percent of original size [2021-08-26 02:26:32,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 119 [2021-08-26 02:26:32,886 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:26:32,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 120 [2021-08-26 02:26:33,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:33,291 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-08-26 02:26:33,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 372 treesize of output 204 [2021-08-26 02:26:33,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:33,328 INFO L354 Elim1Store]: treesize reduction 86, result has 14.9 percent of original size [2021-08-26 02:26:33,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 333 treesize of output 169 [2021-08-26 02:26:33,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:33,349 INFO L354 Elim1Store]: treesize reduction 81, result has 12.0 percent of original size [2021-08-26 02:26:33,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 309 [2021-08-26 02:26:33,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:33,380 INFO L354 Elim1Store]: treesize reduction 198, result has 8.8 percent of original size [2021-08-26 02:26:33,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 303 treesize of output 225 [2021-08-26 02:26:33,412 INFO L354 Elim1Store]: treesize reduction 341, result has 7.8 percent of original size [2021-08-26 02:26:33,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 182 [2021-08-26 02:26:33,425 INFO L354 Elim1Store]: treesize reduction 105, result has 13.2 percent of original size [2021-08-26 02:26:33,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 145 [2021-08-26 02:26:33,944 INFO L354 Elim1Store]: treesize reduction 33, result has 10.8 percent of original size [2021-08-26 02:26:33,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 88 [2021-08-26 02:26:33,958 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:26:33,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 63 [2021-08-26 02:26:34,081 INFO L354 Elim1Store]: treesize reduction 97, result has 19.8 percent of original size [2021-08-26 02:26:34,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 57 [2021-08-26 02:26:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:34,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558146829] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:34,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:34,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-08-26 02:26:34,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554320689] [2021-08-26 02:26:34,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 02:26:34,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 02:26:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-08-26 02:26:34,114 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 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) [2021-08-26 02:26:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:34,697 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2021-08-26 02:26:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-26 02:26:34,697 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 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) Word has length 30 [2021-08-26 02:26:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:34,698 INFO L225 Difference]: With dead ends: 70 [2021-08-26 02:26:34,698 INFO L226 Difference]: Without dead ends: 62 [2021-08-26 02:26:34,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 642.4ms TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2021-08-26 02:26:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-26 02:26:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 41. [2021-08-26 02:26:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 40 states have internal predecessors, (42), 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) [2021-08-26 02:26:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-08-26 02:26:34,701 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 30 [2021-08-26 02:26:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:34,701 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-08-26 02:26:34,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 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) [2021-08-26 02:26:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-08-26 02:26:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 02:26:34,702 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:34,702 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:34,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:34,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:34,905 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1802282803, now seen corresponding path program 3 times [2021-08-26 02:26:34,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:34,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140790607] [2021-08-26 02:26:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:34,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:35,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:35,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140790607] [2021-08-26 02:26:35,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140790607] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:35,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57270226] [2021-08-26 02:26:35,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:26:35,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:35,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:35,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:35,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 02:26:35,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 02:26:35,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:26:35,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 54 conjunts are in the unsatisfiable core [2021-08-26 02:26:35,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:35,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:35,612 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:35,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:35,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:35,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:35,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:35,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:35,763 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:26:35,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:26:35,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:35,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:35,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:35,776 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:26:35,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:26:35,803 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:26:35,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:26:36,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:36,062 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-08-26 02:26:36,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 354 treesize of output 198 [2021-08-26 02:26:36,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:36,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:36,113 INFO L354 Elim1Store]: treesize reduction 84, result has 20.8 percent of original size [2021-08-26 02:26:36,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 311 treesize of output 159 [2021-08-26 02:26:36,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:36,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:36,178 INFO L354 Elim1Store]: treesize reduction 476, result has 9.7 percent of original size [2021-08-26 02:26:36,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 287 treesize of output 216 [2021-08-26 02:26:36,204 INFO L354 Elim1Store]: treesize reduction 208, result has 13.7 percent of original size [2021-08-26 02:26:36,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 165 [2021-08-26 02:26:36,220 INFO L354 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2021-08-26 02:26:36,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 154 [2021-08-26 02:26:37,246 INFO L354 Elim1Store]: treesize reduction 73, result has 9.9 percent of original size [2021-08-26 02:26:37,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 101 [2021-08-26 02:26:37,259 INFO L354 Elim1Store]: treesize reduction 66, result has 4.3 percent of original size [2021-08-26 02:26:37,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 71 [2021-08-26 02:26:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:37,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57270226] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:37,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:37,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 19 [2021-08-26 02:26:37,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699039872] [2021-08-26 02:26:37,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:26:37,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:37,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:26:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:26:37,460 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 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) [2021-08-26 02:26:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:37,884 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2021-08-26 02:26:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 02:26:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 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 32 [2021-08-26 02:26:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:37,885 INFO L225 Difference]: With dead ends: 82 [2021-08-26 02:26:37,885 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 02:26:37,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 468.8ms TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-08-26 02:26:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 02:26:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-08-26 02:26:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 61 states have internal predecessors, (64), 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) [2021-08-26 02:26:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2021-08-26 02:26:37,890 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 32 [2021-08-26 02:26:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:37,891 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2021-08-26 02:26:37,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 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) [2021-08-26 02:26:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2021-08-26 02:26:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 02:26:37,891 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:37,891 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:37,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:38,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:38,097 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:38,097 INFO L82 PathProgramCache]: Analyzing trace with hash -526515315, now seen corresponding path program 3 times [2021-08-26 02:26:38,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:38,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808476811] [2021-08-26 02:26:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:38,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:38,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:38,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808476811] [2021-08-26 02:26:38,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808476811] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:38,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196345840] [2021-08-26 02:26:38,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:26:38,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:38,337 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:38,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 02:26:38,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 02:26:38,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:26:38,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 59 conjunts are in the unsatisfiable core [2021-08-26 02:26:38,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:38,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:38,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:38,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:38,928 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:38,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:38,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:39,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:39,031 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:26:39,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:26:39,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:39,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:39,042 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:26:39,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:26:39,063 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:26:39,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:26:39,242 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:26:39,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 162 [2021-08-26 02:26:39,266 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:26:39,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 255 treesize of output 127 [2021-08-26 02:26:39,292 INFO L354 Elim1Store]: treesize reduction 168, result has 16.8 percent of original size [2021-08-26 02:26:39,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 162 [2021-08-26 02:26:39,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 141 treesize of output 125 [2021-08-26 02:26:39,317 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-08-26 02:26:39,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 153 [2021-08-26 02:26:40,109 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-08-26 02:26:40,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 100 [2021-08-26 02:26:40,131 INFO L354 Elim1Store]: treesize reduction 94, result has 6.9 percent of original size [2021-08-26 02:26:40,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 59 [2021-08-26 02:26:40,167 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:26:40,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 14 [2021-08-26 02:26:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:40,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196345840] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:40,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:40,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20 [2021-08-26 02:26:40,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522513819] [2021-08-26 02:26:40,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 02:26:40,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:40,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 02:26:40,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-08-26 02:26:40,173 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2021-08-26 02:26:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:40,594 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-08-26 02:26:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 02:26:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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 36 [2021-08-26 02:26:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:40,596 INFO L225 Difference]: With dead ends: 70 [2021-08-26 02:26:40,596 INFO L226 Difference]: Without dead ends: 45 [2021-08-26 02:26:40,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 546.8ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-08-26 02:26:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-26 02:26:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-08-26 02:26:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 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) [2021-08-26 02:26:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-08-26 02:26:40,600 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 36 [2021-08-26 02:26:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:40,600 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-08-26 02:26:40,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2021-08-26 02:26:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-08-26 02:26:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 02:26:40,601 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:40,601 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:40,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:40,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 02:26:40,817 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash 872964086, now seen corresponding path program 4 times [2021-08-26 02:26:40,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:40,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790415487] [2021-08-26 02:26:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:40,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:41,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:41,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790415487] [2021-08-26 02:26:41,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790415487] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:41,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129486475] [2021-08-26 02:26:41,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 02:26:41,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:41,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:41,167 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:41,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 02:26:41,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 02:26:41,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:26:41,743 WARN L261 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 60 conjunts are in the unsatisfiable core [2021-08-26 02:26:41,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:41,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:41,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:41,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:41,798 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:41,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:41,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:41,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:41,900 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:26:41,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:26:41,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:41,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:41,913 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:26:41,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:26:41,934 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:26:41,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:26:41,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-08-26 02:26:42,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:42,169 INFO L354 Elim1Store]: treesize reduction 232, result has 11.1 percent of original size [2021-08-26 02:26:42,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 331 treesize of output 291 [2021-08-26 02:26:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:42,227 INFO L354 Elim1Store]: treesize reduction 220, result has 10.2 percent of original size [2021-08-26 02:26:42,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 257 treesize of output 205 [2021-08-26 02:26:42,254 INFO L354 Elim1Store]: treesize reduction 94, result has 15.3 percent of original size [2021-08-26 02:26:42,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 226 treesize of output 216 [2021-08-26 02:26:42,298 INFO L354 Elim1Store]: treesize reduction 98, result has 26.9 percent of original size [2021-08-26 02:26:42,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 206 treesize of output 228 [2021-08-26 02:26:42,900 INFO L354 Elim1Store]: treesize reduction 61, result has 10.3 percent of original size [2021-08-26 02:26:42,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 512 treesize of output 230 [2021-08-26 02:26:42,960 INFO L354 Elim1Store]: treesize reduction 122, result has 15.3 percent of original size [2021-08-26 02:26:42,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 461 treesize of output 195 [2021-08-26 02:26:42,981 INFO L354 Elim1Store]: treesize reduction 145, result has 9.4 percent of original size [2021-08-26 02:26:42,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 478 treesize of output 436 [2021-08-26 02:26:43,004 INFO L354 Elim1Store]: treesize reduction 235, result has 6.7 percent of original size [2021-08-26 02:26:43,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 427 treesize of output 379 [2021-08-26 02:26:43,029 INFO L354 Elim1Store]: treesize reduction 204, result has 15.4 percent of original size [2021-08-26 02:26:43,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 373 treesize of output 359 [2021-08-26 02:26:43,061 INFO L354 Elim1Store]: treesize reduction 350, result has 8.9 percent of original size [2021-08-26 02:26:43,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 353 treesize of output 254 [2021-08-26 02:26:43,080 INFO L354 Elim1Store]: treesize reduction 196, result has 18.7 percent of original size [2021-08-26 02:26:43,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 245 treesize of output 239 [2021-08-26 02:26:44,123 INFO L354 Elim1Store]: treesize reduction 101, result has 16.5 percent of original size [2021-08-26 02:26:44,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 179 treesize of output 111 [2021-08-26 02:26:44,142 INFO L354 Elim1Store]: treesize reduction 102, result has 2.9 percent of original size [2021-08-26 02:26:44,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 78 [2021-08-26 02:26:44,296 INFO L354 Elim1Store]: treesize reduction 77, result has 23.8 percent of original size [2021-08-26 02:26:44,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 49 [2021-08-26 02:26:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:44,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129486475] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:44,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:44,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2021-08-26 02:26:44,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6278715] [2021-08-26 02:26:44,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 02:26:44,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 02:26:44,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-08-26 02:26:44,307 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 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) [2021-08-26 02:26:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:26:47,114 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2021-08-26 02:26:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 02:26:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 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 36 [2021-08-26 02:26:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:26:47,115 INFO L225 Difference]: With dead ends: 105 [2021-08-26 02:26:47,115 INFO L226 Difference]: Without dead ends: 103 [2021-08-26 02:26:47,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 606.8ms TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2021-08-26 02:26:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-26 02:26:47,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 70. [2021-08-26 02:26:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 1.088235294117647) internal successors, (74), 69 states have internal predecessors, (74), 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) [2021-08-26 02:26:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-08-26 02:26:47,130 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 36 [2021-08-26 02:26:47,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:26:47,131 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-08-26 02:26:47,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 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) [2021-08-26 02:26:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-08-26 02:26:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 02:26:47,131 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:26:47,131 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:26:47,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:47,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-26 02:26:47,345 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:26:47,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:26:47,345 INFO L82 PathProgramCache]: Analyzing trace with hash 578375222, now seen corresponding path program 4 times [2021-08-26 02:26:47,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:26:47,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342378908] [2021-08-26 02:26:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:26:47,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:26:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:26:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:47,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:26:47,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342378908] [2021-08-26 02:26:47,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342378908] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:47,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682988089] [2021-08-26 02:26:47,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 02:26:47,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:26:47,644 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:26:47,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 02:26:48,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 02:26:48,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:26:48,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 60 conjunts are in the unsatisfiable core [2021-08-26 02:26:48,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:26:48,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:48,448 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:26:48,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:26:48,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:48,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:26:48,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:26:48,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:48,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:48,580 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:26:48,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:26:48,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:48,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:48,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:48,592 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:26:48,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:26:48,617 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:26:48,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:26:48,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:48,868 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-08-26 02:26:48,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 286 treesize of output 146 [2021-08-26 02:26:48,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:48,904 INFO L354 Elim1Store]: treesize reduction 246, result has 12.1 percent of original size [2021-08-26 02:26:48,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 234 treesize of output 188 [2021-08-26 02:26:48,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 182 treesize of output 146 [2021-08-26 02:26:48,943 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:26:48,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 143 treesize of output 173 [2021-08-26 02:26:48,953 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-08-26 02:26:48,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 160 [2021-08-26 02:26:49,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:49,357 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-08-26 02:26:49,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 514 treesize of output 232 [2021-08-26 02:26:49,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:49,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:49,436 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-08-26 02:26:49,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 459 treesize of output 193 [2021-08-26 02:26:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:26:49,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:26:49,524 INFO L354 Elim1Store]: treesize reduction 786, result has 8.6 percent of original size [2021-08-26 02:26:49,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 431 treesize of output 343 [2021-08-26 02:26:49,562 INFO L354 Elim1Store]: treesize reduction 593, result has 8.6 percent of original size [2021-08-26 02:26:49,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 331 treesize of output 262 [2021-08-26 02:26:49,584 INFO L354 Elim1Store]: treesize reduction 164, result has 32.0 percent of original size [2021-08-26 02:26:49,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 237 treesize of output 263 [2021-08-26 02:26:53,186 INFO L354 Elim1Store]: treesize reduction 113, result has 12.4 percent of original size [2021-08-26 02:26:53,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 273 treesize of output 125 [2021-08-26 02:26:53,206 INFO L354 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2021-08-26 02:26:53,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 110 treesize of output 92 [2021-08-26 02:26:53,328 INFO L354 Elim1Store]: treesize reduction 72, result has 11.1 percent of original size [2021-08-26 02:26:53,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 46 [2021-08-26 02:26:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:26:53,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682988089] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:26:53,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:26:53,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-08-26 02:26:53,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595895846] [2021-08-26 02:26:53,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-26 02:26:53,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:26:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-26 02:26:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=462, Unknown=1, NotChecked=0, Total=552 [2021-08-26 02:26:53,365 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 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) [2021-08-26 02:27:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:27:00,584 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-08-26 02:27:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-26 02:27:00,585 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 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 40 [2021-08-26 02:27:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:27:00,585 INFO L225 Difference]: With dead ends: 111 [2021-08-26 02:27:00,585 INFO L226 Difference]: Without dead ends: 103 [2021-08-26 02:27:00,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3415.3ms TimeCoverageRelationStatistics Valid=213, Invalid=1192, Unknown=1, NotChecked=0, Total=1406 [2021-08-26 02:27:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-26 02:27:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 76. [2021-08-26 02:27:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 75 states have internal predecessors, (79), 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) [2021-08-26 02:27:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-08-26 02:27:00,591 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 40 [2021-08-26 02:27:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:27:00,591 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-08-26 02:27:00,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 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) [2021-08-26 02:27:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-08-26 02:27:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-26 02:27:00,591 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:27:00,592 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:27:00,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 02:27:00,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-26 02:27:00,797 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:27:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:27:00,798 INFO L82 PathProgramCache]: Analyzing trace with hash -226703515, now seen corresponding path program 5 times [2021-08-26 02:27:00,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:27:00,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080513442] [2021-08-26 02:27:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:27:00,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:27:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:27:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:27:01,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:27:01,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080513442] [2021-08-26 02:27:01,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080513442] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:27:01,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464835186] [2021-08-26 02:27:01,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 02:27:01,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:27:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:27:01,211 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:27:01,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 02:27:02,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-26 02:27:02,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:27:02,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 62 conjunts are in the unsatisfiable core [2021-08-26 02:27:02,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:27:02,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:27:02,159 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:27:02,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:27:02,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:27:02,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:27:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:02,263 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:27:02,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:27:02,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:27:02,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:02,276 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:27:02,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:27:02,304 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:27:02,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:27:02,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:27:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:02,485 INFO L354 Elim1Store]: treesize reduction 182, result has 10.8 percent of original size [2021-08-26 02:27:02,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 252 treesize of output 212 [2021-08-26 02:27:02,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:02,502 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:27:02,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 121 [2021-08-26 02:27:02,535 INFO L354 Elim1Store]: treesize reduction 98, result has 26.9 percent of original size [2021-08-26 02:27:02,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 144 treesize of output 166 [2021-08-26 02:27:02,802 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:27:02,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 468 treesize of output 206 [2021-08-26 02:27:02,848 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:27:02,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 417 treesize of output 171 [2021-08-26 02:27:02,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 434 treesize of output 399 [2021-08-26 02:27:02,887 INFO L354 Elim1Store]: treesize reduction 308, result has 14.7 percent of original size [2021-08-26 02:27:02,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 354 treesize of output 268 [2021-08-26 02:27:02,896 INFO L354 Elim1Store]: treesize reduction 85, result has 18.3 percent of original size [2021-08-26 02:27:02,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 223 [2021-08-26 02:27:02,917 INFO L354 Elim1Store]: treesize reduction 168, result has 30.3 percent of original size [2021-08-26 02:27:02,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 242 [2021-08-26 02:27:03,951 INFO L354 Elim1Store]: treesize reduction 146, result has 15.6 percent of original size [2021-08-26 02:27:03,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 125 [2021-08-26 02:27:03,979 INFO L354 Elim1Store]: treesize reduction 142, result has 4.7 percent of original size [2021-08-26 02:27:03,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 77 [2021-08-26 02:27:04,033 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-08-26 02:27:04,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 25 [2021-08-26 02:27:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:27:04,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464835186] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:27:04,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:27:04,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2021-08-26 02:27:04,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447831423] [2021-08-26 02:27:04,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-26 02:27:04,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:27:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-26 02:27:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2021-08-26 02:27:04,060 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 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) [2021-08-26 02:27:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:27:06,788 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2021-08-26 02:27:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 02:27:06,788 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 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 42 [2021-08-26 02:27:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:27:06,789 INFO L225 Difference]: With dead ends: 123 [2021-08-26 02:27:06,789 INFO L226 Difference]: Without dead ends: 107 [2021-08-26 02:27:06,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 855.0ms TimeCoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2021-08-26 02:27:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-08-26 02:27:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2021-08-26 02:27:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 98 states have internal predecessors, (102), 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) [2021-08-26 02:27:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2021-08-26 02:27:06,796 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 42 [2021-08-26 02:27:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:27:06,796 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2021-08-26 02:27:06,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 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) [2021-08-26 02:27:06,797 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2021-08-26 02:27:06,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 02:27:06,797 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:27:06,797 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:27:06,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 02:27:07,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:27:07,011 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:27:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:27:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1851226312, now seen corresponding path program 6 times [2021-08-26 02:27:07,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:27:07,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353254265] [2021-08-26 02:27:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:27:07,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:27:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:27:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 02:27:07,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:27:07,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353254265] [2021-08-26 02:27:07,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353254265] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:27:07,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031725716] [2021-08-26 02:27:07,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 02:27:07,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:27:07,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:27:07,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:27:07,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 02:27:08,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-08-26 02:27:08,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:27:08,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 81 conjunts are in the unsatisfiable core [2021-08-26 02:27:08,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:27:08,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:27:08,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:08,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:27:08,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:08,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:27:08,697 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:27:08,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:27:08,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:08,798 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:27:08,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:27:08,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:27:08,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:08,810 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:27:08,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:27:08,833 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:27:08,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:27:08,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-08-26 02:27:09,053 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-08-26 02:27:09,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 286 treesize of output 146 [2021-08-26 02:27:09,090 INFO L354 Elim1Store]: treesize reduction 246, result has 12.1 percent of original size [2021-08-26 02:27:09,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 234 treesize of output 188 [2021-08-26 02:27:09,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 182 treesize of output 146 [2021-08-26 02:27:09,135 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:27:09,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 143 treesize of output 173 [2021-08-26 02:27:09,145 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-08-26 02:27:09,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 160 [2021-08-26 02:27:09,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:09,448 INFO L354 Elim1Store]: treesize reduction 130, result has 18.2 percent of original size [2021-08-26 02:27:09,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 415 treesize of output 181 [2021-08-26 02:27:09,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:09,492 INFO L354 Elim1Store]: treesize reduction 298, result has 15.1 percent of original size [2021-08-26 02:27:09,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 351 treesize of output 296 [2021-08-26 02:27:09,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:27:09,539 INFO L354 Elim1Store]: treesize reduction 346, result has 13.9 percent of original size [2021-08-26 02:27:09,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 300 treesize of output 257 [2021-08-26 02:27:09,593 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:27:09,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 232 treesize of output 281 [2021-08-26 02:27:10,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:10,095 INFO L354 Elim1Store]: treesize reduction 164, result has 19.2 percent of original size [2021-08-26 02:27:10,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 621 treesize of output 231 [2021-08-26 02:27:10,115 INFO L354 Elim1Store]: treesize reduction 147, result has 12.5 percent of original size [2021-08-26 02:27:10,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 362 treesize of output 356 [2021-08-26 02:27:10,181 INFO L354 Elim1Store]: treesize reduction 318, result has 13.6 percent of original size [2021-08-26 02:27:10,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 347 treesize of output 361 [2021-08-26 02:27:10,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:27:10,234 INFO L354 Elim1Store]: treesize reduction 344, result has 17.9 percent of original size [2021-08-26 02:27:10,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 346 treesize of output 352 [2021-08-26 02:27:10,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:27:10,264 INFO L354 Elim1Store]: treesize reduction 202, result has 17.9 percent of original size [2021-08-26 02:27:10,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 340 treesize of output 345 [2021-08-26 02:27:13,266 INFO L354 Elim1Store]: treesize reduction 117, result has 11.4 percent of original size [2021-08-26 02:27:13,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 533 treesize of output 320 [2021-08-26 02:27:13,482 INFO L354 Elim1Store]: treesize reduction 182, result has 28.3 percent of original size [2021-08-26 02:27:13,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 533 treesize of output 324 [2021-08-26 02:27:13,559 INFO L354 Elim1Store]: treesize reduction 144, result has 25.4 percent of original size [2021-08-26 02:27:13,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 333 treesize of output 363 [2021-08-26 02:27:13,664 INFO L354 Elim1Store]: treesize reduction 288, result has 16.3 percent of original size [2021-08-26 02:27:13,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 342 treesize of output 356 [2021-08-26 02:27:13,773 INFO L354 Elim1Store]: treesize reduction 299, result has 14.6 percent of original size [2021-08-26 02:27:13,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 328 treesize of output 316 [2021-08-26 02:31:49,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:31:49,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 02:31:49,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-08-26 02:31:49,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903450954] [2021-08-26 02:31:49,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 02:31:49,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:31:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 02:31:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=482, Unknown=5, NotChecked=0, Total=552 [2021-08-26 02:31:49,439 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2021-08-26 02:31:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:31:51,719 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2021-08-26 02:31:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 02:31:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 44 [2021-08-26 02:31:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:31:51,720 INFO L225 Difference]: With dead ends: 105 [2021-08-26 02:31:51,720 INFO L226 Difference]: Without dead ends: 103 [2021-08-26 02:31:51,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 13542.7ms TimeCoverageRelationStatistics Valid=90, Invalid=716, Unknown=6, NotChecked=0, Total=812 [2021-08-26 02:31:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-26 02:31:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2021-08-26 02:31:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 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) [2021-08-26 02:31:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2021-08-26 02:31:51,726 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 44 [2021-08-26 02:31:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:31:51,726 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2021-08-26 02:31:51,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2021-08-26 02:31:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2021-08-26 02:31:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 02:31:51,727 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:31:51,727 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:31:51,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 02:31:51,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:31:51,928 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:31:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:31:51,928 INFO L82 PathProgramCache]: Analyzing trace with hash 947807781, now seen corresponding path program 5 times [2021-08-26 02:31:51,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:31:51,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368272102] [2021-08-26 02:31:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:31:51,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:31:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:31:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:31:52,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:31:52,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368272102] [2021-08-26 02:31:52,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368272102] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:31:52,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499208476] [2021-08-26 02:31:52,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 02:31:52,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:31:52,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:31:52,385 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:31:52,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 02:31:53,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-26 02:31:53,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:31:53,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 65 conjunts are in the unsatisfiable core [2021-08-26 02:31:53,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:31:53,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:31:53,839 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:31:53,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:31:53,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:31:53,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:31:53,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:31:53,940 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:31:53,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:31:53,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:31:53,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:31:53,950 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:31:53,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:31:53,971 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:31:53,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:31:54,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:31:54,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:31:54,136 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-08-26 02:31:54,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 252 treesize of output 220 [2021-08-26 02:31:54,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:31:54,171 INFO L354 Elim1Store]: treesize reduction 162, result has 13.8 percent of original size [2021-08-26 02:31:54,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 144 [2021-08-26 02:31:54,206 INFO L354 Elim1Store]: treesize reduction 98, result has 26.9 percent of original size [2021-08-26 02:31:54,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 160 treesize of output 182 [2021-08-26 02:31:54,506 INFO L354 Elim1Store]: treesize reduction 81, result has 12.0 percent of original size [2021-08-26 02:31:54,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 502 treesize of output 196 [2021-08-26 02:31:54,549 INFO L354 Elim1Store]: treesize reduction 158, result has 14.1 percent of original size [2021-08-26 02:31:54,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 439 treesize of output 161 [2021-08-26 02:31:54,565 INFO L354 Elim1Store]: treesize reduction 93, result has 10.6 percent of original size [2021-08-26 02:31:54,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 464 treesize of output 382 [2021-08-26 02:31:54,594 INFO L354 Elim1Store]: treesize reduction 174, result has 13.0 percent of original size [2021-08-26 02:31:54,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 401 treesize of output 285 [2021-08-26 02:31:54,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 221 treesize of output 201 [2021-08-26 02:31:54,620 INFO L354 Elim1Store]: treesize reduction 136, result has 43.6 percent of original size [2021-08-26 02:31:54,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 201 treesize of output 255 [2021-08-26 02:31:55,950 INFO L354 Elim1Store]: treesize reduction 215, result has 13.7 percent of original size [2021-08-26 02:31:55,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 293 treesize of output 151 [2021-08-26 02:31:55,992 INFO L354 Elim1Store]: treesize reduction 207, result has 4.6 percent of original size [2021-08-26 02:31:55,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 98 treesize of output 84 [2021-08-26 02:31:56,036 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:31:56,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 14 [2021-08-26 02:31:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:31:56,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499208476] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:31:56,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:31:56,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 26 [2021-08-26 02:31:56,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431979445] [2021-08-26 02:31:56,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-26 02:31:56,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:31:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-26 02:31:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2021-08-26 02:31:56,042 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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) [2021-08-26 02:31:58,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:31:58,661 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2021-08-26 02:31:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 02:31:58,662 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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 46 [2021-08-26 02:31:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:31:58,662 INFO L225 Difference]: With dead ends: 86 [2021-08-26 02:31:58,662 INFO L226 Difference]: Without dead ends: 55 [2021-08-26 02:31:58,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 909.5ms TimeCoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2021-08-26 02:31:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-26 02:31:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-08-26 02:31:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 54 states have internal predecessors, (56), 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) [2021-08-26 02:31:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2021-08-26 02:31:58,666 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 46 [2021-08-26 02:31:58,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:31:58,666 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2021-08-26 02:31:58,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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) [2021-08-26 02:31:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2021-08-26 02:31:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 02:31:58,667 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:31:58,667 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:31:58,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 02:31:58,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-08-26 02:31:58,867 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:31:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:31:58,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1657426098, now seen corresponding path program 7 times [2021-08-26 02:31:58,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:31:58,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586604702] [2021-08-26 02:31:58,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:31:58,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:31:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:31:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:31:59,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:31:59,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586604702] [2021-08-26 02:31:59,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586604702] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:31:59,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4681320] [2021-08-26 02:31:59,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 02:31:59,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:31:59,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:31:59,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:31:59,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 02:32:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:32:00,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 72 conjunts are in the unsatisfiable core [2021-08-26 02:32:00,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:32:00,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:32:00,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:00,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:00,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:00,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:00,880 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:32:00,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:32:00,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:00,987 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:32:00,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:32:00,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:00,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:00,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:00,998 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:32:00,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:32:01,019 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:32:01,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:32:01,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:01,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:01,211 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:32:01,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:32:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:01,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:01,227 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:32:01,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:32:01,263 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:32:01,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:32:01,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-08-26 02:32:01,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:01,585 INFO L354 Elim1Store]: treesize reduction 232, result has 11.1 percent of original size [2021-08-26 02:32:01,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 398 treesize of output 172 [2021-08-26 02:32:01,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:01,645 INFO L354 Elim1Store]: treesize reduction 448, result has 10.6 percent of original size [2021-08-26 02:32:01,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 334 treesize of output 279 [2021-08-26 02:32:01,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 270 treesize of output 222 [2021-08-26 02:32:01,660 INFO L354 Elim1Store]: treesize reduction 65, result has 22.6 percent of original size [2021-08-26 02:32:01,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 218 [2021-08-26 02:32:01,722 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:32:01,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 215 treesize of output 264 [2021-08-26 02:32:02,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:02,258 INFO L354 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2021-08-26 02:32:02,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 674 treesize of output 258 [2021-08-26 02:32:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:02,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:02,391 INFO L354 Elim1Store]: treesize reduction 172, result has 17.3 percent of original size [2021-08-26 02:32:02,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 607 treesize of output 219 [2021-08-26 02:32:02,445 INFO L354 Elim1Store]: treesize reduction 342, result has 11.6 percent of original size [2021-08-26 02:32:02,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 632 treesize of output 570 [2021-08-26 02:32:02,482 INFO L354 Elim1Store]: treesize reduction 252, result has 15.2 percent of original size [2021-08-26 02:32:02,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 564 treesize of output 546 [2021-08-26 02:32:02,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:02,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:02,569 INFO L354 Elim1Store]: treesize reduction 1200, result has 7.8 percent of original size [2021-08-26 02:32:02,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 483 treesize of output 378 [2021-08-26 02:32:02,602 INFO L354 Elim1Store]: treesize reduction 296, result has 29.7 percent of original size [2021-08-26 02:32:02,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 341 treesize of output 393 [2021-08-26 02:32:11,707 INFO L354 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2021-08-26 02:32:11,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 428 treesize of output 176 [2021-08-26 02:32:11,755 INFO L354 Elim1Store]: treesize reduction 226, result has 3.0 percent of original size [2021-08-26 02:32:11,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 141 treesize of output 121 [2021-08-26 02:32:12,004 INFO L354 Elim1Store]: treesize reduction 72, result has 11.1 percent of original size [2021-08-26 02:32:12,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 46 [2021-08-26 02:32:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:32:12,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4681320] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:32:12,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:32:12,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 25 [2021-08-26 02:32:12,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115558942] [2021-08-26 02:32:12,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-26 02:32:12,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:32:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-26 02:32:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=519, Unknown=1, NotChecked=0, Total=600 [2021-08-26 02:32:12,012 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 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) [2021-08-26 02:32:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:32:31,300 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-08-26 02:32:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 02:32:31,301 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 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 46 [2021-08-26 02:32:31,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:32:31,301 INFO L225 Difference]: With dead ends: 104 [2021-08-26 02:32:31,301 INFO L226 Difference]: Without dead ends: 102 [2021-08-26 02:32:31,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 7511.7ms TimeCoverageRelationStatistics Valid=174, Invalid=1231, Unknown=1, NotChecked=0, Total=1406 [2021-08-26 02:32:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-26 02:32:31,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 61. [2021-08-26 02:32:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 60 states have internal predecessors, (63), 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) [2021-08-26 02:32:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-08-26 02:32:31,306 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 46 [2021-08-26 02:32:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:32:31,306 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-08-26 02:32:31,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 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) [2021-08-26 02:32:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-08-26 02:32:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-26 02:32:31,307 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:32:31,307 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:32:31,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 02:32:31,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:32:31,508 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:32:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:32:31,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1958792818, now seen corresponding path program 6 times [2021-08-26 02:32:31,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:32:31,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651810214] [2021-08-26 02:32:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:32:31,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:32:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:32:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:32:32,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:32:32,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651810214] [2021-08-26 02:32:32,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651810214] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:32:32,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807794781] [2021-08-26 02:32:32,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 02:32:32,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:32:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:32:32,003 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:32:32,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 02:32:33,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-26 02:32:33,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:32:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 73 conjunts are in the unsatisfiable core [2021-08-26 02:32:33,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:32:33,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:32:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:33,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:33,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:33,893 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:32:33,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:32:33,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:33,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:33,999 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:32:33,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:32:34,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:34,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:34,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:34,011 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:32:34,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:32:34,032 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:32:34,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:32:34,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:34,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:34,228 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:32:34,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:32:34,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:34,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:34,244 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:32:34,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:32:34,279 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:32:34,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:32:34,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-08-26 02:32:34,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:34,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:34,588 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:32:34,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 398 treesize of output 172 [2021-08-26 02:32:34,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:34,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:34,617 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:32:34,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 334 treesize of output 279 [2021-08-26 02:32:34,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 270 treesize of output 222 [2021-08-26 02:32:34,673 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:32:34,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 219 treesize of output 268 [2021-08-26 02:32:34,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:34,683 INFO L354 Elim1Store]: treesize reduction 53, result has 26.4 percent of original size [2021-08-26 02:32:34,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 252 [2021-08-26 02:32:35,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:35,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:35,109 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-26 02:32:35,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 662 treesize of output 246 [2021-08-26 02:32:35,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:35,198 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:32:35,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 599 treesize of output 211 [2021-08-26 02:32:35,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:35,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:35,252 INFO L354 Elim1Store]: treesize reduction 512, result has 12.9 percent of original size [2021-08-26 02:32:35,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 567 treesize of output 464 [2021-08-26 02:32:35,275 INFO L354 Elim1Store]: treesize reduction 350, result has 10.9 percent of original size [2021-08-26 02:32:35,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 449 treesize of output 368 [2021-08-26 02:32:35,303 INFO L354 Elim1Store]: treesize reduction 336, result has 20.2 percent of original size [2021-08-26 02:32:35,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 339 treesize of output 351 [2021-08-26 02:32:37,070 INFO L354 Elim1Store]: treesize reduction 210, result has 15.7 percent of original size [2021-08-26 02:32:37,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 298 treesize of output 170 [2021-08-26 02:32:37,113 INFO L354 Elim1Store]: treesize reduction 214, result has 3.2 percent of original size [2021-08-26 02:32:37,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 135 treesize of output 107 [2021-08-26 02:32:37,190 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-08-26 02:32:37,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 40 [2021-08-26 02:32:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:32:37,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807794781] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:32:37,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:32:37,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2021-08-26 02:32:37,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884070694] [2021-08-26 02:32:37,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-26 02:32:37,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:32:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-26 02:32:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2021-08-26 02:32:37,228 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 28 states have internal predecessors, (86), 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) [2021-08-26 02:32:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:32:40,202 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2021-08-26 02:32:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-26 02:32:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 28 states have internal predecessors, (86), 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 50 [2021-08-26 02:32:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:32:40,203 INFO L225 Difference]: With dead ends: 124 [2021-08-26 02:32:40,203 INFO L226 Difference]: Without dead ends: 116 [2021-08-26 02:32:40,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1193.7ms TimeCoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2021-08-26 02:32:40,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-26 02:32:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2021-08-26 02:32:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 99 states have internal predecessors, (104), 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) [2021-08-26 02:32:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2021-08-26 02:32:40,210 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 50 [2021-08-26 02:32:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:32:40,210 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2021-08-26 02:32:40,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 28 states have internal predecessors, (86), 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) [2021-08-26 02:32:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2021-08-26 02:32:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-26 02:32:40,211 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:32:40,211 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:32:40,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 02:32:40,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:32:40,413 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:32:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:32:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1096234173, now seen corresponding path program 8 times [2021-08-26 02:32:40,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:32:40,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157050674] [2021-08-26 02:32:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:32:40,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:32:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:32:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:32:40,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:32:40,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157050674] [2021-08-26 02:32:40,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157050674] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:32:40,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966990214] [2021-08-26 02:32:40,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:32:40,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:32:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:32:40,846 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:32:40,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 02:32:42,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:32:42,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:32:42,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 79 conjunts are in the unsatisfiable core [2021-08-26 02:32:42,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:32:42,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:32:42,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:42,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:42,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:42,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:42,869 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:32:42,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:32:42,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:42,976 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:32:42,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:32:42,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:42,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:42,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:42,986 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:32:42,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:32:43,008 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:32:43,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:32:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:43,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:43,203 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:32:43,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:32:43,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:43,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:43,220 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:32:43,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:32:43,255 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:32:43,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:32:43,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:43,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:43,527 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:32:43,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:32:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:43,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:43,553 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:32:43,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:32:43,604 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:32:43,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:32:43,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:43,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:43,957 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-26 02:32:43,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 232 [2021-08-26 02:32:43,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:44,037 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:32:44,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 557 treesize of output 197 [2021-08-26 02:32:44,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:44,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:44,046 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:32:44,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 582 treesize of output 531 [2021-08-26 02:32:44,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 519 treesize of output 476 [2021-08-26 02:32:44,063 INFO L354 Elim1Store]: treesize reduction 105, result has 18.0 percent of original size [2021-08-26 02:32:44,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 476 treesize of output 455 [2021-08-26 02:32:44,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:44,101 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:32:44,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 452 treesize of output 332 [2021-08-26 02:32:44,133 INFO L354 Elim1Store]: treesize reduction 300, result has 28.7 percent of original size [2021-08-26 02:32:44,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 320 treesize of output 368 [2021-08-26 02:32:46,685 INFO L354 Elim1Store]: treesize reduction 295, result has 12.5 percent of original size [2021-08-26 02:32:46,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 16 new quantified variables, introduced 28 case distinctions, treesize of input 352 treesize of output 193 [2021-08-26 02:32:46,746 INFO L354 Elim1Store]: treesize reduction 291, result has 3.3 percent of original size [2021-08-26 02:32:46,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 137 treesize of output 115 [2021-08-26 02:32:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:32:46,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966990214] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:32:46,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:32:46,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 30 [2021-08-26 02:32:46,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499647138] [2021-08-26 02:32:46,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-26 02:32:46,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:32:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-26 02:32:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2021-08-26 02:32:46,919 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 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) [2021-08-26 02:32:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:32:47,947 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2021-08-26 02:32:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 02:32:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 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 52 [2021-08-26 02:32:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:32:47,948 INFO L225 Difference]: With dead ends: 120 [2021-08-26 02:32:47,948 INFO L226 Difference]: Without dead ends: 98 [2021-08-26 02:32:47,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1327.4ms TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 02:32:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-26 02:32:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-08-26 02:32:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 93 states have internal predecessors, (96), 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) [2021-08-26 02:32:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2021-08-26 02:32:47,956 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 52 [2021-08-26 02:32:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:32:47,956 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2021-08-26 02:32:47,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 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) [2021-08-26 02:32:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2021-08-26 02:32:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:32:47,956 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:32:47,956 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:32:47,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 02:32:48,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-26 02:32:48,169 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:32:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:32:48,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1892522115, now seen corresponding path program 7 times [2021-08-26 02:32:48,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:32:48,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241505018] [2021-08-26 02:32:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:32:48,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:32:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:32:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:32:48,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:32:48,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241505018] [2021-08-26 02:32:48,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241505018] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:32:48,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330331073] [2021-08-26 02:32:48,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 02:32:48,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:32:48,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:32:48,584 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:32:48,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 02:32:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:32:50,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 85 conjunts are in the unsatisfiable core [2021-08-26 02:32:50,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:32:50,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:32:50,845 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:32:50,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:32:50,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:50,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:32:50,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:50,952 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:32:50,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:32:50,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:32:50,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:50,961 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:32:50,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:32:50,983 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:32:50,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:32:51,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:51,157 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:32:51,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:32:51,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:51,174 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:32:51,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:32:51,208 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:32:51,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:32:51,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:51,461 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:32:51,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:32:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:32:51,489 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:32:51,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:32:51,545 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:32:51,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:32:51,905 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-26 02:32:51,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 232 [2021-08-26 02:32:51,970 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:32:51,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 557 treesize of output 197 [2021-08-26 02:32:52,019 INFO L354 Elim1Store]: treesize reduction 512, result has 12.9 percent of original size [2021-08-26 02:32:52,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 525 treesize of output 422 [2021-08-26 02:32:52,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 387 treesize of output 344 [2021-08-26 02:32:52,032 INFO L354 Elim1Store]: treesize reduction 105, result has 18.0 percent of original size [2021-08-26 02:32:52,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 344 treesize of output 323 [2021-08-26 02:32:52,065 INFO L354 Elim1Store]: treesize reduction 300, result has 28.7 percent of original size [2021-08-26 02:32:52,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 320 treesize of output 368 [2021-08-26 02:32:54,410 INFO L354 Elim1Store]: treesize reduction 380, result has 9.7 percent of original size [2021-08-26 02:32:54,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 19 new quantified variables, introduced 36 case distinctions, treesize of input 473 treesize of output 223 [2021-08-26 02:32:54,494 INFO L354 Elim1Store]: treesize reduction 364, result has 3.4 percent of original size [2021-08-26 02:32:54,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 142 treesize of output 114 [2021-08-26 02:32:54,620 INFO L354 Elim1Store]: treesize reduction 52, result has 35.8 percent of original size [2021-08-26 02:32:54,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 59 [2021-08-26 02:32:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:32:54,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330331073] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:32:54,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:32:54,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 33 [2021-08-26 02:32:54,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203694228] [2021-08-26 02:32:54,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-08-26 02:32:54,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:32:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-08-26 02:32:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2021-08-26 02:32:54,628 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 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) [2021-08-26 02:33:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:33:03,622 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-08-26 02:33:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 02:33:03,623 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 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 56 [2021-08-26 02:33:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:33:03,623 INFO L225 Difference]: With dead ends: 102 [2021-08-26 02:33:03,623 INFO L226 Difference]: Without dead ends: 65 [2021-08-26 02:33:03,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1451.6ms TimeCoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 02:33:03,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-26 02:33:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-08-26 02:33:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 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) [2021-08-26 02:33:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-08-26 02:33:03,628 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 56 [2021-08-26 02:33:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:33:03,629 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-08-26 02:33:03,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 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) [2021-08-26 02:33:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-08-26 02:33:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:33:03,629 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:33:03,629 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:33:03,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 02:33:03,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:33:03,837 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:33:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:33:03,837 INFO L82 PathProgramCache]: Analyzing trace with hash -947778202, now seen corresponding path program 9 times [2021-08-26 02:33:03,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:33:03,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626403822] [2021-08-26 02:33:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:33:03,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:33:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:33:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:33:04,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:33:04,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626403822] [2021-08-26 02:33:04,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626403822] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:33:04,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125836281] [2021-08-26 02:33:04,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:33:04,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:33:04,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:33:04,420 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:33:04,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 02:33:07,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-26 02:33:07,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:33:07,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 94 conjunts are in the unsatisfiable core [2021-08-26 02:33:07,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:33:07,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:33:07,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:07,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:33:07,111 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:33:07,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:33:07,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:33:07,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:07,215 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:33:07,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:33:07,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:33:07,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:07,224 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:33:07,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:33:07,246 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:33:07,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:33:07,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:07,424 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:33:07,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:33:07,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:07,454 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:33:07,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:33:07,489 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:33:07,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:33:07,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:33:07,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:07,769 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:33:07,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:33:07,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:07,795 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:33:07,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:33:07,852 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:33:07,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:33:08,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:08,205 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:33:08,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 530 treesize of output 198 [2021-08-26 02:33:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:08,245 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:33:08,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 454 treesize of output 390 [2021-08-26 02:33:08,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 378 treesize of output 318 [2021-08-26 02:33:08,327 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:33:08,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 315 treesize of output 387 [2021-08-26 02:33:08,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:33:08,338 INFO L354 Elim1Store]: treesize reduction 65, result has 26.1 percent of original size [2021-08-26 02:33:08,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 369 treesize of output 368 [2021-08-26 02:33:08,867 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-08-26 02:33:08,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 842 treesize of output 272 [2021-08-26 02:33:08,979 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:33:08,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 767 treesize of output 237 [2021-08-26 02:33:09,025 INFO L354 Elim1Store]: treesize reduction 426, result has 10.7 percent of original size [2021-08-26 02:33:09,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 824 treesize of output 727 [2021-08-26 02:33:09,035 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:33:09,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 694 treesize of output 634 [2021-08-26 02:33:09,086 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:33:09,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 619 treesize of output 478 [2021-08-26 02:33:09,127 INFO L354 Elim1Store]: treesize reduction 536, result has 20.4 percent of original size [2021-08-26 02:33:09,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 463 treesize of output 501 [2021-08-26 02:33:11,525 INFO L354 Elim1Store]: treesize reduction 347, result has 13.5 percent of original size [2021-08-26 02:33:11,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 18 new quantified variables, introduced 36 case distinctions, treesize of input 435 treesize of output 231 [2021-08-26 02:33:11,611 INFO L354 Elim1Store]: treesize reduction 351, result has 2.8 percent of original size [2021-08-26 02:33:11,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 172 treesize of output 134 [2021-08-26 02:33:11,965 INFO L354 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2021-08-26 02:33:11,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 82 [2021-08-26 02:33:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:33:11,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125836281] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:33:11,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:33:11,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 35 [2021-08-26 02:33:11,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506979522] [2021-08-26 02:33:11,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-26 02:33:11,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:33:11,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-26 02:33:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 02:33:11,978 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 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) [2021-08-26 02:33:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:33:25,289 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2021-08-26 02:33:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-26 02:33:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 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 56 [2021-08-26 02:33:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:33:25,290 INFO L225 Difference]: With dead ends: 153 [2021-08-26 02:33:25,290 INFO L226 Difference]: Without dead ends: 143 [2021-08-26 02:33:25,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1808.3ms TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2021-08-26 02:33:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-08-26 02:33:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2021-08-26 02:33:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.055045871559633) internal successors, (115), 110 states have internal predecessors, (115), 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) [2021-08-26 02:33:25,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-08-26 02:33:25,300 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 56 [2021-08-26 02:33:25,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:33:25,300 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-08-26 02:33:25,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 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) [2021-08-26 02:33:25,301 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-08-26 02:33:25,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-26 02:33:25,301 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:33:25,301 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:33:25,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 02:33:25,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:33:25,504 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:33:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:33:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash 33202389, now seen corresponding path program 10 times [2021-08-26 02:33:25,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:33:25,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654483081] [2021-08-26 02:33:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:33:25,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:33:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:33:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:33:26,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:33:26,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654483081] [2021-08-26 02:33:26,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654483081] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:33:26,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112457574] [2021-08-26 02:33:26,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 02:33:26,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:33:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:33:26,242 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:33:26,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 02:33:28,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 02:33:28,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:33:28,962 WARN L261 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-26 02:33:28,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:33:28,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:33:29,009 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:33:29,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:33:29,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:33:29,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:33:29,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:29,115 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:33:29,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:33:29,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:33:29,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:29,124 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:33:29,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:33:29,146 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:33:29,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:33:29,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:29,326 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:33:29,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:33:29,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:29,342 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:33:29,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:33:29,376 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:33:29,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:33:29,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:29,635 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:33:29,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:33:29,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:29,663 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:33:29,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:33:29,716 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:33:29,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:33:30,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:30,050 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:33:30,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 431 treesize of output 163 [2021-08-26 02:33:30,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:30,087 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:33:30,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 291 [2021-08-26 02:33:30,165 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:33:30,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 279 treesize of output 351 [2021-08-26 02:33:30,660 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-08-26 02:33:30,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 792 treesize of output 258 [2021-08-26 02:33:30,768 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:33:30,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 717 treesize of output 223 [2021-08-26 02:33:30,776 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:33:30,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 750 treesize of output 690 [2021-08-26 02:33:30,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 675 treesize of output 624 [2021-08-26 02:33:30,794 INFO L354 Elim1Store]: treesize reduction 125, result has 17.8 percent of original size [2021-08-26 02:33:30,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 624 treesize of output 599 [2021-08-26 02:33:30,848 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:33:30,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 596 treesize of output 455 [2021-08-26 02:33:30,894 INFO L354 Elim1Store]: treesize reduction 492, result has 26.9 percent of original size [2021-08-26 02:33:30,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 440 treesize of output 522 [2021-08-26 02:33:33,910 INFO L354 Elim1Store]: treesize reduction 452, result has 11.9 percent of original size [2021-08-26 02:33:33,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 21 new quantified variables, introduced 45 case distinctions, treesize of input 584 treesize of output 261 [2021-08-26 02:33:34,029 INFO L354 Elim1Store]: treesize reduction 452, result has 2.8 percent of original size [2021-08-26 02:33:34,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 177 treesize of output 141 [2021-08-26 02:33:34,174 INFO L354 Elim1Store]: treesize reduction 52, result has 35.8 percent of original size [2021-08-26 02:33:34,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 59 [2021-08-26 02:33:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:33:34,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112457574] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:33:34,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:33:34,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 39 [2021-08-26 02:33:34,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239894763] [2021-08-26 02:33:34,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-26 02:33:34,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:33:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-26 02:33:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 02:33:34,218 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 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) [2021-08-26 02:33:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:33:35,988 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2021-08-26 02:33:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-26 02:33:35,988 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 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 62 [2021-08-26 02:33:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:33:35,989 INFO L225 Difference]: With dead ends: 157 [2021-08-26 02:33:35,989 INFO L226 Difference]: Without dead ends: 141 [2021-08-26 02:33:35,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2111.9ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-08-26 02:33:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-08-26 02:33:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2021-08-26 02:33:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 135 states have (on average 1.0444444444444445) internal successors, (141), 136 states have internal predecessors, (141), 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) [2021-08-26 02:33:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-08-26 02:33:36,001 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 62 [2021-08-26 02:33:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:33:36,002 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-08-26 02:33:36,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 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) [2021-08-26 02:33:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-08-26 02:33:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-26 02:33:36,003 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:33:36,003 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:33:36,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-08-26 02:33:36,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:33:36,213 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:33:36,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:33:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash 947839823, now seen corresponding path program 8 times [2021-08-26 02:33:36,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:33:36,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780163496] [2021-08-26 02:33:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:33:36,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:33:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:33:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 02:33:37,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:33:37,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780163496] [2021-08-26 02:33:37,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780163496] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:33:37,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428073965] [2021-08-26 02:33:37,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:33:37,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:33:37,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:33:37,027 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:33:37,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 02:33:40,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:33:40,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:33:40,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 91 conjunts are in the unsatisfiable core [2021-08-26 02:33:40,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:33:40,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:33:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:33:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:33:40,094 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:33:40,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:33:40,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,192 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:33:40,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:33:40,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:33:40,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,201 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:33:40,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:33:40,223 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:33:40,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:33:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,407 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:33:40,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:33:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,423 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:33:40,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:33:40,457 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:33:40,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:33:40,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,705 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:33:40,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:33:40,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:40,730 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:33:40,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:33:40,781 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:33:40,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:33:40,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2021-08-26 02:33:41,190 INFO L354 Elim1Store]: treesize reduction 314, result has 10.3 percent of original size [2021-08-26 02:33:41,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 530 treesize of output 198 [2021-08-26 02:33:41,277 INFO L354 Elim1Store]: treesize reduction 730, result has 9.4 percent of original size [2021-08-26 02:33:41,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 454 treesize of output 390 [2021-08-26 02:33:41,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 378 treesize of output 318 [2021-08-26 02:33:41,356 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:33:41,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 315 treesize of output 387 [2021-08-26 02:33:41,367 INFO L354 Elim1Store]: treesize reduction 77, result has 23.0 percent of original size [2021-08-26 02:33:41,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 369 treesize of output 368 [2021-08-26 02:33:41,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:41,847 INFO L354 Elim1Store]: treesize reduction 234, result has 15.5 percent of original size [2021-08-26 02:33:41,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 707 treesize of output 233 [2021-08-26 02:33:41,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:33:41,920 INFO L354 Elim1Store]: treesize reduction 774, result has 11.7 percent of original size [2021-08-26 02:33:41,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 619 treesize of output 546 [2021-08-26 02:33:41,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:33:41,960 INFO L354 Elim1Store]: treesize reduction 498, result has 13.8 percent of original size [2021-08-26 02:33:41,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 552 treesize of output 485 [2021-08-26 02:33:42,078 INFO L354 Elim1Store]: treesize reduction 708, result has 19.8 percent of original size [2021-08-26 02:33:42,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 452 treesize of output 551 [2021-08-26 02:33:42,885 INFO L354 Elim1Store]: treesize reduction 169, result has 4.0 percent of original size [2021-08-26 02:33:42,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 16 case distinctions, treesize of input 1227 treesize of output 327 [2021-08-26 02:33:43,058 INFO L354 Elim1Store]: treesize reduction 278, result has 13.4 percent of original size [2021-08-26 02:33:43,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 1140 treesize of output 292 [2021-08-26 02:33:43,107 INFO L354 Elim1Store]: treesize reduction 601, result has 4.3 percent of original size [2021-08-26 02:33:43,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 1181 treesize of output 1112 [2021-08-26 02:33:43,199 INFO L354 Elim1Store]: treesize reduction 1238, result has 7.7 percent of original size [2021-08-26 02:33:43,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 1094 treesize of output 932 [2021-08-26 02:33:43,228 INFO L354 Elim1Store]: treesize reduction 624, result has 7.8 percent of original size [2021-08-26 02:33:43,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 914 treesize of output 833 [2021-08-26 02:33:43,258 INFO L354 Elim1Store]: treesize reduction 566, result has 12.9 percent of original size [2021-08-26 02:33:43,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 824 treesize of output 801 [2021-08-26 02:33:43,316 INFO L354 Elim1Store]: treesize reduction 804, result has 20.3 percent of original size [2021-08-26 02:33:43,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 792 treesize of output 868 [2021-08-26 02:33:47,067 INFO L354 Elim1Store]: treesize reduction 451, result has 12.1 percent of original size [2021-08-26 02:33:47,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 20 new quantified variables, introduced 45 case distinctions, treesize of input 765 treesize of output 260 [2021-08-26 02:33:47,181 INFO L354 Elim1Store]: treesize reduction 459, result has 2.1 percent of original size [2021-08-26 02:33:47,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 198 treesize of output 172 [2021-08-26 02:33:47,345 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-08-26 02:33:47,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 59 [2021-08-26 02:33:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:33:47,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428073965] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:33:47,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:33:47,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35 [2021-08-26 02:33:47,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572939195] [2021-08-26 02:33:47,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-26 02:33:47,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:33:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-26 02:33:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 02:33:47,397 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 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) [2021-08-26 02:34:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:34:01,606 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2021-08-26 02:34:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-26 02:34:01,607 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 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 64 [2021-08-26 02:34:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:34:01,607 INFO L225 Difference]: With dead ends: 159 [2021-08-26 02:34:01,607 INFO L226 Difference]: Without dead ends: 151 [2021-08-26 02:34:01,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 2179.1ms TimeCoverageRelationStatistics Valid=246, Invalid=2204, Unknown=0, NotChecked=0, Total=2450 [2021-08-26 02:34:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-26 02:34:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2021-08-26 02:34:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 142 states have internal predecessors, (146), 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) [2021-08-26 02:34:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2021-08-26 02:34:01,620 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 64 [2021-08-26 02:34:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:34:01,620 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2021-08-26 02:34:01,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 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) [2021-08-26 02:34:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2021-08-26 02:34:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-26 02:34:01,620 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:34:01,621 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:34:01,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 02:34:01,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-26 02:34:01,830 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:34:01,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:34:01,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1892583736, now seen corresponding path program 11 times [2021-08-26 02:34:01,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:34:01,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841071972] [2021-08-26 02:34:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:34:01,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:34:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:34:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 02:34:02,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:34:02,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841071972] [2021-08-26 02:34:02,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841071972] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:34:02,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26155018] [2021-08-26 02:34:02,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 02:34:02,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:34:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:34:02,893 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:34:02,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 02:34:06,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-08-26 02:34:06,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:34:06,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 115 conjunts are in the unsatisfiable core [2021-08-26 02:34:06,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:34:06,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:34:06,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:06,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:34:06,461 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:34:06,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:34:06,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:34:06,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:06,560 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:34:06,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:34:06,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:34:06,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:06,569 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:34:06,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:34:06,590 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:34:06,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:34:06,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:06,779 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:34:06,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:34:06,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:06,795 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:34:06,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:34:06,828 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:34:06,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:34:07,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:07,087 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:34:07,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:34:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:07,111 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:34:07,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:34:07,161 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:34:07,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:34:07,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2021-08-26 02:34:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:07,534 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:34:07,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 530 treesize of output 198 [2021-08-26 02:34:07,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:07,573 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:34:07,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 454 treesize of output 390 [2021-08-26 02:34:07,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 378 treesize of output 318 [2021-08-26 02:34:07,655 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:34:07,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 315 treesize of output 387 [2021-08-26 02:34:07,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:34:07,666 INFO L354 Elim1Store]: treesize reduction 65, result has 26.1 percent of original size [2021-08-26 02:34:07,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 369 treesize of output 368 [2021-08-26 02:34:08,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:08,178 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:34:08,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 705 treesize of output 231 [2021-08-26 02:34:08,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:08,234 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:34:08,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 617 treesize of output 544 [2021-08-26 02:34:08,241 INFO L354 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2021-08-26 02:34:08,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 529 treesize of output 460 [2021-08-26 02:34:08,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:34:08,259 INFO L354 Elim1Store]: treesize reduction 184, result has 21.7 percent of original size [2021-08-26 02:34:08,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 454 treesize of output 456 [2021-08-26 02:34:08,360 INFO L354 Elim1Store]: treesize reduction 708, result has 19.8 percent of original size [2021-08-26 02:34:08,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 450 treesize of output 549 [2021-08-26 02:34:08,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:08,967 INFO L354 Elim1Store]: treesize reduction 216, result has 16.6 percent of original size [2021-08-26 02:34:08,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 904 treesize of output 264 [2021-08-26 02:34:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:09,059 INFO L354 Elim1Store]: treesize reduction 984, result has 9.5 percent of original size [2021-08-26 02:34:09,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 804 treesize of output 722 [2021-08-26 02:34:09,066 INFO L354 Elim1Store]: treesize reduction 144, result has 0.7 percent of original size [2021-08-26 02:34:09,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 704 treesize of output 626 [2021-08-26 02:34:09,211 INFO L354 Elim1Store]: treesize reduction 1050, result has 18.1 percent of original size [2021-08-26 02:34:09,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 617 treesize of output 747 [2021-08-26 02:34:09,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:34:09,239 INFO L354 Elim1Store]: treesize reduction 372, result has 18.1 percent of original size [2021-08-26 02:34:09,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 723 treesize of output 728 [2021-08-26 02:34:09,990 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-08-26 02:34:09,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 1312 treesize of output 338 [2021-08-26 02:34:10,208 INFO L354 Elim1Store]: treesize reduction 280, result has 15.2 percent of original size [2021-08-26 02:34:10,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 1213 treesize of output 303 [2021-08-26 02:34:10,332 INFO L354 Elim1Store]: treesize reduction 1628, result has 9.4 percent of original size [2021-08-26 02:34:10,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 29 case distinctions, treesize of input 1169 treesize of output 1015 [2021-08-26 02:34:10,388 INFO L354 Elim1Store]: treesize reduction 1454, result has 7.4 percent of original size [2021-08-26 02:34:10,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 991 treesize of output 868 [2021-08-26 02:34:10,461 INFO L354 Elim1Store]: treesize reduction 1272, result has 11.7 percent of original size [2021-08-26 02:34:10,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 821 treesize of output 827 [2021-08-26 02:34:14,217 INFO L354 Elim1Store]: treesize reduction 491, result has 16.1 percent of original size [2021-08-26 02:34:14,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 22 new quantified variables, introduced 55 case distinctions, treesize of input 572 treesize of output 318 [2021-08-26 02:34:14,373 INFO L354 Elim1Store]: treesize reduction 527, result has 1.9 percent of original size [2021-08-26 02:34:14,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 14 new quantified variables, introduced 55 case distinctions, treesize of input 253 treesize of output 199 [2021-08-26 02:34:19,029 INFO L354 Elim1Store]: treesize reduction 228, result has 21.1 percent of original size [2021-08-26 02:34:19,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 155 treesize of output 175 [2021-08-26 02:34:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:34:19,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26155018] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:34:19,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:34:19,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 43 [2021-08-26 02:34:19,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200421555] [2021-08-26 02:34:19,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-08-26 02:34:19,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:34:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-08-26 02:34:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1602, Unknown=0, NotChecked=0, Total=1806 [2021-08-26 02:34:19,044 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 43 states, 43 states have (on average 2.697674418604651) internal successors, (116), 43 states have internal predecessors, (116), 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) [2021-08-26 02:34:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:34:36,678 INFO L93 Difference]: Finished difference Result 206 states and 213 transitions. [2021-08-26 02:34:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-26 02:34:36,678 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.697674418604651) internal successors, (116), 43 states have internal predecessors, (116), 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 64 [2021-08-26 02:34:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:34:36,679 INFO L225 Difference]: With dead ends: 206 [2021-08-26 02:34:36,679 INFO L226 Difference]: Without dead ends: 204 [2021-08-26 02:34:36,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 10327.4ms TimeCoverageRelationStatistics Valid=367, Invalid=3292, Unknown=1, NotChecked=0, Total=3660 [2021-08-26 02:34:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-08-26 02:34:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 159. [2021-08-26 02:34:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.0509554140127388) internal successors, (165), 158 states have internal predecessors, (165), 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) [2021-08-26 02:34:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2021-08-26 02:34:36,695 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 64 [2021-08-26 02:34:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:34:36,695 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2021-08-26 02:34:36,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.697674418604651) internal successors, (116), 43 states have internal predecessors, (116), 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) [2021-08-26 02:34:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2021-08-26 02:34:36,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-26 02:34:36,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:34:36,696 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:34:36,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-08-26 02:34:36,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-26 02:34:36,896 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:34:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:34:36,897 INFO L82 PathProgramCache]: Analyzing trace with hash 965871509, now seen corresponding path program 9 times [2021-08-26 02:34:36,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:34:36,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86642380] [2021-08-26 02:34:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:34:36,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:34:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:34:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:34:37,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:34:37,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86642380] [2021-08-26 02:34:37,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86642380] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:34:37,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960280493] [2021-08-26 02:34:37,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:34:37,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:34:37,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:34:37,699 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:34:37,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 02:34:41,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-26 02:34:41,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:34:41,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 108 conjunts are in the unsatisfiable core [2021-08-26 02:34:41,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:34:41,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:34:41,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:41,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:34:41,598 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:34:41,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:34:41,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:34:41,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:41,699 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:34:41,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:34:41,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:34:41,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:41,715 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:34:41,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:34:41,736 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:34:41,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:34:41,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:41,920 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:34:41,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:34:41,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:41,935 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:34:41,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:34:41,970 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:34:41,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:34:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:42,216 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:34:42,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:34:42,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:42,240 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:34:42,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:34:42,291 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:34:42,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:34:42,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:42,635 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:34:42,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 431 treesize of output 163 [2021-08-26 02:34:42,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:42,673 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:34:42,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 291 [2021-08-26 02:34:42,748 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:34:42,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 279 treesize of output 351 [2021-08-26 02:34:43,182 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-08-26 02:34:43,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 792 treesize of output 258 [2021-08-26 02:34:43,286 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:34:43,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 717 treesize of output 223 [2021-08-26 02:34:43,295 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:34:43,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 750 treesize of output 690 [2021-08-26 02:34:43,311 INFO L354 Elim1Store]: treesize reduction 125, result has 17.8 percent of original size [2021-08-26 02:34:43,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 699 treesize of output 623 [2021-08-26 02:34:43,362 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:34:43,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 596 treesize of output 455 [2021-08-26 02:34:43,407 INFO L354 Elim1Store]: treesize reduction 492, result has 26.9 percent of original size [2021-08-26 02:34:43,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 440 treesize of output 522 [2021-08-26 02:34:47,429 INFO L354 Elim1Store]: treesize reduction 581, result has 8.8 percent of original size [2021-08-26 02:34:47,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 24 new quantified variables, introduced 55 case distinctions, treesize of input 922 treesize of output 320 [2021-08-26 02:34:47,584 INFO L354 Elim1Store]: treesize reduction 565, result has 2.8 percent of original size [2021-08-26 02:34:47,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 16 new quantified variables, introduced 55 case distinctions, treesize of input 207 treesize of output 149 [2021-08-26 02:34:47,848 INFO L354 Elim1Store]: treesize reduction 124, result has 26.6 percent of original size [2021-08-26 02:34:47,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 109 [2021-08-26 02:34:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:34:47,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960280493] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:34:47,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:34:47,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28] total 44 [2021-08-26 02:34:47,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2995828] [2021-08-26 02:34:47,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-08-26 02:34:47,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:34:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-08-26 02:34:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-08-26 02:34:47,859 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 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) [2021-08-26 02:34:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:34:49,627 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2021-08-26 02:34:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-26 02:34:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 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 66 [2021-08-26 02:34:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:34:49,628 INFO L225 Difference]: With dead ends: 167 [2021-08-26 02:34:49,628 INFO L226 Difference]: Without dead ends: 124 [2021-08-26 02:34:49,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 2636.7ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-08-26 02:34:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-26 02:34:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-08-26 02:34:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.0573770491803278) internal successors, (129), 123 states have internal predecessors, (129), 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) [2021-08-26 02:34:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-08-26 02:34:49,640 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 66 [2021-08-26 02:34:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:34:49,640 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-08-26 02:34:49,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 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) [2021-08-26 02:34:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-08-26 02:34:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-26 02:34:49,641 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:34:49,641 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:34:49,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-26 02:34:49,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:34:49,842 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:34:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:34:49,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1653507522, now seen corresponding path program 12 times [2021-08-26 02:34:49,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:34:49,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562143926] [2021-08-26 02:34:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:34:49,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:34:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:34:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:34:50,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:34:50,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562143926] [2021-08-26 02:34:50,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562143926] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:34:50,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476613166] [2021-08-26 02:34:50,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 02:34:50,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:34:50,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:34:50,653 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:34:50,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 02:34:55,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-26 02:34:55,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:34:55,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 102 conjunts are in the unsatisfiable core [2021-08-26 02:34:55,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:34:55,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:34:55,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:55,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:34:55,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:55,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:34:55,447 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:34:55,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:34:55,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:55,542 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:34:55,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:34:55,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:34:55,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:55,551 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:34:55,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:34:55,573 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:34:55,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:34:55,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:55,760 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:34:55,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:34:55,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:55,776 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:34:55,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:34:55,815 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:34:55,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:34:56,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:56,059 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:34:56,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:34:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:56,095 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:34:56,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:34:56,152 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:34:56,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:34:56,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:34:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:56,495 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:34:56,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 431 treesize of output 163 [2021-08-26 02:34:56,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:56,533 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:34:56,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 291 [2021-08-26 02:34:56,609 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:34:56,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 279 treesize of output 351 [2021-08-26 02:34:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:57,118 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:34:57,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 682 treesize of output 224 [2021-08-26 02:34:57,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:34:57,192 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:34:57,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 594 treesize of output 521 [2021-08-26 02:34:57,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 506 treesize of output 434 [2021-08-26 02:34:57,309 INFO L354 Elim1Store]: treesize reduction 708, result has 19.8 percent of original size [2021-08-26 02:34:57,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 431 treesize of output 530 [2021-08-26 02:34:57,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:34:57,320 INFO L354 Elim1Store]: treesize reduction 77, result has 26.0 percent of original size [2021-08-26 02:34:57,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 509 treesize of output 508 [2021-08-26 02:34:57,883 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:34:57,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 15 case distinctions, treesize of input 1042 treesize of output 298 [2021-08-26 02:34:58,022 INFO L354 Elim1Store]: treesize reduction 216, result has 16.6 percent of original size [2021-08-26 02:34:58,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 955 treesize of output 263 [2021-08-26 02:34:58,126 INFO L354 Elim1Store]: treesize reduction 1160, result has 10.4 percent of original size [2021-08-26 02:34:58,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 915 treesize of output 778 [2021-08-26 02:34:58,139 INFO L354 Elim1Store]: treesize reduction 177, result has 13.2 percent of original size [2021-08-26 02:34:58,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 729 treesize of output 645 [2021-08-26 02:34:58,157 INFO L354 Elim1Store]: treesize reduction 328, result has 15.2 percent of original size [2021-08-26 02:34:58,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 639 treesize of output 613 [2021-08-26 02:34:58,231 INFO L354 Elim1Store]: treesize reduction 808, result has 19.9 percent of original size [2021-08-26 02:34:58,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 607 treesize of output 679 [2021-08-26 02:35:01,757 INFO L354 Elim1Store]: treesize reduction 532, result has 13.2 percent of original size [2021-08-26 02:35:01,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 23 new quantified variables, introduced 55 case distinctions, treesize of input 718 treesize of output 302 [2021-08-26 02:35:01,913 INFO L354 Elim1Store]: treesize reduction 548, result has 2.3 percent of original size [2021-08-26 02:35:01,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 215 treesize of output 171 [2021-08-26 02:35:02,217 INFO L354 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2021-08-26 02:35:02,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 82 [2021-08-26 02:35:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:35:02,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476613166] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:35:02,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:35:02,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 39 [2021-08-26 02:35:02,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276056735] [2021-08-26 02:35:02,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-26 02:35:02,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:35:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-26 02:35:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 02:35:02,226 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 39 states have internal predecessors, (123), 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) [2021-08-26 02:35:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:35:15,064 INFO L93 Difference]: Finished difference Result 245 states and 253 transitions. [2021-08-26 02:35:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-26 02:35:15,065 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 39 states have internal predecessors, (123), 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 66 [2021-08-26 02:35:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:35:15,066 INFO L225 Difference]: With dead ends: 245 [2021-08-26 02:35:15,066 INFO L226 Difference]: Without dead ends: 243 [2021-08-26 02:35:15,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 2836.0ms TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2021-08-26 02:35:15,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-08-26 02:35:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 185. [2021-08-26 02:35:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 183 states have (on average 1.0874316939890711) internal successors, (199), 184 states have internal predecessors, (199), 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) [2021-08-26 02:35:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 199 transitions. [2021-08-26 02:35:15,095 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 199 transitions. Word has length 66 [2021-08-26 02:35:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:35:15,095 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 199 transitions. [2021-08-26 02:35:15,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 39 states have internal predecessors, (123), 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) [2021-08-26 02:35:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 199 transitions. [2021-08-26 02:35:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-26 02:35:15,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:35:15,096 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:35:15,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 02:35:15,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:35:15,303 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:35:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:35:15,303 INFO L82 PathProgramCache]: Analyzing trace with hash 565970046, now seen corresponding path program 10 times [2021-08-26 02:35:15,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:35:15,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726518384] [2021-08-26 02:35:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:35:15,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:35:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:35:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:35:16,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:35:16,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726518384] [2021-08-26 02:35:16,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726518384] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:35:16,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095073849] [2021-08-26 02:35:16,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 02:35:16,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:35:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:35:16,300 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:35:16,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 02:35:20,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 02:35:20,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:35:20,710 WARN L261 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 107 conjunts are in the unsatisfiable core [2021-08-26 02:35:20,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:35:20,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:35:20,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:20,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:35:20,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:20,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:35:20,766 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:35:20,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:35:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:20,865 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:35:20,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:35:20,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:35:20,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:20,875 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:35:20,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:35:20,898 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:35:20,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:35:21,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:21,101 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:35:21,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:35:21,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:21,117 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:35:21,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:35:21,152 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:35:21,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:35:21,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:21,411 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:35:21,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:35:21,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:21,437 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:35:21,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:35:21,490 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:35:21,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:35:21,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:21,821 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:35:21,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 431 treesize of output 163 [2021-08-26 02:35:21,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:21,858 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:35:21,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 291 [2021-08-26 02:35:21,934 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:35:21,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 279 treesize of output 351 [2021-08-26 02:35:21,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 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 [2021-08-26 02:35:22,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:22,405 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:35:22,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 682 treesize of output 224 [2021-08-26 02:35:22,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:22,469 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:35:22,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 594 treesize of output 521 [2021-08-26 02:35:22,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 506 treesize of output 434 [2021-08-26 02:35:22,590 INFO L354 Elim1Store]: treesize reduction 708, result has 19.8 percent of original size [2021-08-26 02:35:22,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 431 treesize of output 530 [2021-08-26 02:35:22,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:35:22,602 INFO L354 Elim1Store]: treesize reduction 77, result has 26.0 percent of original size [2021-08-26 02:35:22,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 509 treesize of output 508 [2021-08-26 02:35:23,232 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:35:23,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 15 case distinctions, treesize of input 1042 treesize of output 298 [2021-08-26 02:35:23,383 INFO L354 Elim1Store]: treesize reduction 216, result has 16.6 percent of original size [2021-08-26 02:35:23,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 955 treesize of output 263 [2021-08-26 02:35:23,392 INFO L354 Elim1Store]: treesize reduction 420, result has 0.2 percent of original size [2021-08-26 02:35:23,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 996 treesize of output 927 [2021-08-26 02:35:23,427 INFO L354 Elim1Store]: treesize reduction 502, result has 10.5 percent of original size [2021-08-26 02:35:23,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 937 treesize of output 824 [2021-08-26 02:35:23,498 INFO L354 Elim1Store]: treesize reduction 984, result has 9.5 percent of original size [2021-08-26 02:35:23,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 787 treesize of output 625 [2021-08-26 02:35:23,556 INFO L354 Elim1Store]: treesize reduction 808, result has 19.9 percent of original size [2021-08-26 02:35:23,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 607 treesize of output 679 [2021-08-26 02:35:27,528 INFO L354 Elim1Store]: treesize reduction 536, result has 12.6 percent of original size [2021-08-26 02:35:27,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 23 new quantified variables, introduced 55 case distinctions, treesize of input 651 treesize of output 307 [2021-08-26 02:35:27,693 INFO L354 Elim1Store]: treesize reduction 548, result has 2.3 percent of original size [2021-08-26 02:35:27,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 220 treesize of output 172 [2021-08-26 02:35:27,956 INFO L354 Elim1Store]: treesize reduction 124, result has 26.6 percent of original size [2021-08-26 02:35:27,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 109 [2021-08-26 02:35:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:35:28,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095073849] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:35:28,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:35:28,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 44 [2021-08-26 02:35:28,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098717994] [2021-08-26 02:35:28,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-08-26 02:35:28,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:35:28,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-08-26 02:35:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1712, Unknown=0, NotChecked=0, Total=1892 [2021-08-26 02:35:28,014 INFO L87 Difference]: Start difference. First operand 185 states and 199 transitions. Second operand has 44 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 44 states have internal predecessors, (126), 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) [2021-08-26 02:35:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:35:30,987 INFO L93 Difference]: Finished difference Result 237 states and 244 transitions. [2021-08-26 02:35:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-26 02:35:30,987 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 44 states have internal predecessors, (126), 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 70 [2021-08-26 02:35:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:35:30,988 INFO L225 Difference]: With dead ends: 237 [2021-08-26 02:35:30,988 INFO L226 Difference]: Without dead ends: 229 [2021-08-26 02:35:30,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 3769.7ms TimeCoverageRelationStatistics Valid=371, Invalid=4051, Unknown=0, NotChecked=0, Total=4422 [2021-08-26 02:35:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-08-26 02:35:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 163. [2021-08-26 02:35:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 1.0807453416149069) internal successors, (174), 162 states have internal predecessors, (174), 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) [2021-08-26 02:35:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2021-08-26 02:35:31,006 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 70 [2021-08-26 02:35:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:35:31,006 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2021-08-26 02:35:31,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 44 states have internal predecessors, (126), 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) [2021-08-26 02:35:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2021-08-26 02:35:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-26 02:35:31,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:35:31,007 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:35:31,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-26 02:35:31,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:35:31,221 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:35:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:35:31,221 INFO L82 PathProgramCache]: Analyzing trace with hash 736824237, now seen corresponding path program 13 times [2021-08-26 02:35:31,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:35:31,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130657780] [2021-08-26 02:35:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:35:31,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:35:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:35:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:35:32,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:35:32,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130657780] [2021-08-26 02:35:32,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130657780] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:35:32,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517123640] [2021-08-26 02:35:32,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 02:35:32,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:35:32,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:35:32,423 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:35:32,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 02:35:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:35:37,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 111 conjunts are in the unsatisfiable core [2021-08-26 02:35:37,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:35:37,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:35:37,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:37,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:35:37,166 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:35:37,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:35:37,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:35:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:37,266 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:35:37,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:35:37,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:35:37,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:37,276 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:35:37,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:35:37,298 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:35:37,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:35:37,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:37,490 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:35:37,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:35:37,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:37,506 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:35:37,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:35:37,540 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:35:37,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:35:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:37,801 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:35:37,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:35:37,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:37,828 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:35:37,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:35:37,888 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:35:37,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:35:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:38,240 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:35:38,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 431 treesize of output 163 [2021-08-26 02:35:38,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:38,275 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:35:38,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 291 [2021-08-26 02:35:38,348 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:35:38,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 279 treesize of output 351 [2021-08-26 02:35:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:38,756 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:35:38,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 567 treesize of output 189 [2021-08-26 02:35:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:38,806 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:35:38,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 479 treesize of output 406 [2021-08-26 02:35:38,912 INFO L354 Elim1Store]: treesize reduction 708, result has 19.8 percent of original size [2021-08-26 02:35:38,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 391 treesize of output 490 [2021-08-26 02:35:39,471 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:35:39,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 15 case distinctions, treesize of input 984 treesize of output 284 [2021-08-26 02:35:39,631 INFO L354 Elim1Store]: treesize reduction 216, result has 16.6 percent of original size [2021-08-26 02:35:39,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 897 treesize of output 249 [2021-08-26 02:35:39,721 INFO L354 Elim1Store]: treesize reduction 1160, result has 10.4 percent of original size [2021-08-26 02:35:39,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 857 treesize of output 720 [2021-08-26 02:35:39,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 671 treesize of output 612 [2021-08-26 02:35:39,735 INFO L354 Elim1Store]: treesize reduction 145, result has 17.6 percent of original size [2021-08-26 02:35:39,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 612 treesize of output 583 [2021-08-26 02:35:39,798 INFO L354 Elim1Store]: treesize reduction 756, result has 25.1 percent of original size [2021-08-26 02:35:39,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 580 treesize of output 704 [2021-08-26 02:35:44,952 INFO L354 Elim1Store]: treesize reduction 669, result has 10.7 percent of original size [2021-08-26 02:35:44,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 26 new quantified variables, introduced 66 case distinctions, treesize of input 1137 treesize of output 362 [2021-08-26 02:35:45,192 INFO L354 Elim1Store]: treesize reduction 673, result has 2.3 percent of original size [2021-08-26 02:35:45,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 17 new quantified variables, introduced 66 case distinctions, treesize of input 246 treesize of output 180 [2021-08-26 02:35:45,457 INFO L354 Elim1Store]: treesize reduction 124, result has 26.6 percent of original size [2021-08-26 02:35:45,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 109 [2021-08-26 02:35:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:35:45,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517123640] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:35:45,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:35:45,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 48 [2021-08-26 02:35:45,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344830726] [2021-08-26 02:35:45,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-08-26 02:35:45,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:35:45,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-08-26 02:35:45,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2067, Unknown=0, NotChecked=0, Total=2256 [2021-08-26 02:35:45,514 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand has 48 states, 48 states have (on average 2.7916666666666665) internal successors, (134), 48 states have internal predecessors, (134), 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) [2021-08-26 02:35:50,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:35:50,045 INFO L93 Difference]: Finished difference Result 189 states and 199 transitions. [2021-08-26 02:35:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-26 02:35:50,046 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7916666666666665) internal successors, (134), 48 states have internal predecessors, (134), 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 72 [2021-08-26 02:35:50,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:35:50,046 INFO L225 Difference]: With dead ends: 189 [2021-08-26 02:35:50,046 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 02:35:50,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 3982.2ms TimeCoverageRelationStatistics Valid=257, Invalid=2823, Unknown=0, NotChecked=0, Total=3080 [2021-08-26 02:35:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 02:35:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2021-08-26 02:35:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 1.0437956204379562) internal successors, (143), 138 states have internal predecessors, (143), 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) [2021-08-26 02:35:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2021-08-26 02:35:50,062 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 72 [2021-08-26 02:35:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:35:50,062 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2021-08-26 02:35:50,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7916666666666665) internal successors, (134), 48 states have internal predecessors, (134), 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) [2021-08-26 02:35:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2021-08-26 02:35:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-08-26 02:35:50,063 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:35:50,063 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:35:50,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-26 02:35:50,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-26 02:35:50,265 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:35:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:35:50,265 INFO L82 PathProgramCache]: Analyzing trace with hash -853457299, now seen corresponding path program 11 times [2021-08-26 02:35:50,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:35:50,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516244020] [2021-08-26 02:35:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:35:50,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:35:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:35:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 8 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:35:51,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:35:51,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516244020] [2021-08-26 02:35:51,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516244020] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:35:51,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475385879] [2021-08-26 02:35:51,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 02:35:51,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:35:51,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:35:51,207 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:35:51,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-26 02:35:56,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-08-26 02:35:56,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:35:56,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 114 conjunts are in the unsatisfiable core [2021-08-26 02:35:56,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:35:56,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:35:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:56,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:35:56,536 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:35:56,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:35:56,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:35:56,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:56,635 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:35:56,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:35:56,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:35:56,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:56,645 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:35:56,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:35:56,666 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:35:56,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:35:56,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:56,851 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:35:56,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:35:56,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:56,867 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:35:56,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:35:56,902 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:35:56,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:35:57,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:57,153 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:35:57,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:35:57,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:57,182 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:35:57,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:35:57,235 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:35:57,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:35:57,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:57,576 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:35:57,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 431 treesize of output 163 [2021-08-26 02:35:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:57,614 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:35:57,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 291 [2021-08-26 02:35:57,688 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:35:57,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 279 treesize of output 351 [2021-08-26 02:35:58,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:58,117 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:35:58,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 567 treesize of output 189 [2021-08-26 02:35:58,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:35:58,170 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:35:58,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 479 treesize of output 406 [2021-08-26 02:35:58,275 INFO L354 Elim1Store]: treesize reduction 708, result has 19.8 percent of original size [2021-08-26 02:35:58,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 391 treesize of output 490 [2021-08-26 02:35:58,819 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:35:58,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 15 case distinctions, treesize of input 894 treesize of output 266 [2021-08-26 02:35:58,944 INFO L354 Elim1Store]: treesize reduction 216, result has 16.6 percent of original size [2021-08-26 02:35:58,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 807 treesize of output 231 [2021-08-26 02:35:58,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 848 treesize of output 816 [2021-08-26 02:35:58,955 INFO L354 Elim1Store]: treesize reduction 420, result has 0.2 percent of original size [2021-08-26 02:35:58,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 816 treesize of output 747 [2021-08-26 02:35:59,028 INFO L354 Elim1Store]: treesize reduction 984, result has 9.5 percent of original size [2021-08-26 02:35:59,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 729 treesize of output 567 [2021-08-26 02:35:59,097 INFO L354 Elim1Store]: treesize reduction 700, result has 30.6 percent of original size [2021-08-26 02:35:59,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 549 treesize of output 729 [2021-08-26 02:36:05,257 INFO L354 Elim1Store]: treesize reduction 794, result has 11.5 percent of original size [2021-08-26 02:36:05,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 29 new quantified variables, introduced 78 case distinctions, treesize of input 1550 treesize of output 412 [2021-08-26 02:36:05,531 INFO L354 Elim1Store]: treesize reduction 810, result has 2.3 percent of original size [2021-08-26 02:36:05,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 19 new quantified variables, introduced 78 case distinctions, treesize of input 263 treesize of output 203 [2021-08-26 02:36:05,773 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-08-26 02:36:05,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 82 [2021-08-26 02:36:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:36:05,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475385879] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:36:05,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:36:05,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30] total 47 [2021-08-26 02:36:05,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850971006] [2021-08-26 02:36:05,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-08-26 02:36:05,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:36:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-08-26 02:36:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2021-08-26 02:36:05,782 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand has 47 states, 47 states have (on average 3.0425531914893615) internal successors, (143), 47 states have internal predecessors, (143), 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) [2021-08-26 02:36:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:36:22,696 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2021-08-26 02:36:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-26 02:36:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.0425531914893615) internal successors, (143), 47 states have internal predecessors, (143), 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 76 [2021-08-26 02:36:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:36:22,697 INFO L225 Difference]: With dead ends: 147 [2021-08-26 02:36:22,697 INFO L226 Difference]: Without dead ends: 98 [2021-08-26 02:36:22,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 3748.7ms TimeCoverageRelationStatistics Valid=190, Invalid=2360, Unknown=0, NotChecked=0, Total=2550 [2021-08-26 02:36:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-26 02:36:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-08-26 02:36:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 97 states have internal predecessors, (101), 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) [2021-08-26 02:36:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2021-08-26 02:36:22,709 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 76 [2021-08-26 02:36:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:36:22,709 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2021-08-26 02:36:22,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.0425531914893615) internal successors, (143), 47 states have internal predecessors, (143), 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) [2021-08-26 02:36:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2021-08-26 02:36:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-26 02:36:22,710 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:36:22,710 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:36:22,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-26 02:36:22,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-08-26 02:36:22,913 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:36:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:36:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1206753072, now seen corresponding path program 12 times [2021-08-26 02:36:22,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:36:22,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307403121] [2021-08-26 02:36:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:36:22,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:36:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:36:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 02:36:24,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:36:24,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307403121] [2021-08-26 02:36:24,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307403121] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:36:24,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749004182] [2021-08-26 02:36:24,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 02:36:24,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:36:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:36:24,170 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:36:24,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-26 02:36:30,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-08-26 02:36:30,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:36:30,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 129 conjunts are in the unsatisfiable core [2021-08-26 02:36:30,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:36:30,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:36:30,549 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:36:30,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 [2021-08-26 02:36:30,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:36:30,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-08-26 02:36:30,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:30,655 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:36:30,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 159 treesize of output 93 [2021-08-26 02:36:30,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:36:30,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:30,665 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:36:30,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 120 treesize of output 83 [2021-08-26 02:36:30,686 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:36:30,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 78 [2021-08-26 02:36:30,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:30,889 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:36:30,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2021-08-26 02:36:30,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:30,905 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:36:30,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 121 [2021-08-26 02:36:30,940 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:36:30,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 145 [2021-08-26 02:36:31,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:31,196 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-08-26 02:36:31,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 137 [2021-08-26 02:36:31,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:31,221 INFO L354 Elim1Store]: treesize reduction 204, result has 14.3 percent of original size [2021-08-26 02:36:31,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 196 [2021-08-26 02:36:31,273 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:36:31,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 236 [2021-08-26 02:36:31,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:36:31,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:31,627 INFO L354 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2021-08-26 02:36:31,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 431 treesize of output 163 [2021-08-26 02:36:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:31,664 INFO L354 Elim1Store]: treesize reduction 384, result has 12.1 percent of original size [2021-08-26 02:36:31,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 291 [2021-08-26 02:36:31,742 INFO L354 Elim1Store]: treesize reduction 450, result has 21.9 percent of original size [2021-08-26 02:36:31,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 279 treesize of output 351 [2021-08-26 02:36:32,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:32,206 INFO L354 Elim1Store]: treesize reduction 160, result has 18.4 percent of original size [2021-08-26 02:36:32,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 682 treesize of output 224 [2021-08-26 02:36:32,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:32,262 INFO L354 Elim1Store]: treesize reduction 640, result has 10.6 percent of original size [2021-08-26 02:36:32,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 594 treesize of output 521 [2021-08-26 02:36:32,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 506 treesize of output 434 [2021-08-26 02:36:32,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:36:32,278 INFO L354 Elim1Store]: treesize reduction 77, result has 26.0 percent of original size [2021-08-26 02:36:32,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 431 treesize of output 430 [2021-08-26 02:36:32,383 INFO L354 Elim1Store]: treesize reduction 708, result has 19.8 percent of original size [2021-08-26 02:36:32,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 427 treesize of output 526 [2021-08-26 02:36:32,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:33,056 INFO L354 Elim1Store]: treesize reduction 216, result has 16.6 percent of original size [2021-08-26 02:36:33,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 881 treesize of output 257 [2021-08-26 02:36:33,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:33,138 INFO L354 Elim1Store]: treesize reduction 984, result has 9.5 percent of original size [2021-08-26 02:36:33,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 781 treesize of output 699 [2021-08-26 02:36:33,147 INFO L354 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2021-08-26 02:36:33,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 681 treesize of output 600 [2021-08-26 02:36:33,312 INFO L354 Elim1Store]: treesize reduction 1050, result has 18.1 percent of original size [2021-08-26 02:36:33,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 594 treesize of output 724 [2021-08-26 02:36:33,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:36:33,332 INFO L354 Elim1Store]: treesize reduction 216, result has 21.5 percent of original size [2021-08-26 02:36:33,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 700 treesize of output 702 [2021-08-26 02:36:33,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:34,081 INFO L354 Elim1Store]: treesize reduction 280, result has 15.2 percent of original size [2021-08-26 02:36:34,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 1104 treesize of output 290 [2021-08-26 02:36:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:36:34,197 INFO L354 Elim1Store]: treesize reduction 1428, result has 8.6 percent of original size [2021-08-26 02:36:34,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 992 treesize of output 901 [2021-08-26 02:36:34,206 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-08-26 02:36:34,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 880 treesize of output 790 [2021-08-26 02:36:34,402 INFO L354 Elim1Store]: treesize reduction 1488, result has 16.6 percent of original size [2021-08-26 02:36:34,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 781 treesize of output 946 [2021-08-26 02:36:34,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:36:34,436 INFO L354 Elim1Store]: treesize reduction 432, result has 17.9 percent of original size [2021-08-26 02:36:34,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 919 treesize of output 924 [2021-08-26 02:36:35,516 INFO L354 Elim1Store]: treesize reduction 224, result has 0.4 percent of original size [2021-08-26 02:36:35,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 16 new quantified variables, introduced 28 case distinctions, treesize of input 1560 treesize of output 364 [2021-08-26 02:36:35,784 INFO L354 Elim1Store]: treesize reduction 352, result has 13.9 percent of original size [2021-08-26 02:36:35,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 1449 treesize of output 329 [2021-08-26 02:36:35,959 INFO L354 Elim1Store]: treesize reduction 2208, result has 8.6 percent of original size [2021-08-26 02:36:35,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 37 case distinctions, treesize of input 1401 treesize of output 1230 [2021-08-26 02:36:36,018 INFO L354 Elim1Store]: treesize reduction 1666, result has 7.4 percent of original size [2021-08-26 02:36:36,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 1203 treesize of output 1064 [2021-08-26 02:36:36,125 INFO L354 Elim1Store]: treesize reduction 1740, result has 12.2 percent of original size [2021-08-26 02:36:36,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1013 treesize of output 1053 [2021-08-26 02:36:42,521 INFO L354 Elim1Store]: treesize reduction 712, result has 14.9 percent of original size [2021-08-26 02:36:42,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 27 new quantified variables, introduced 78 case distinctions, treesize of input 888 treesize of output 410 [2021-08-26 02:36:42,795 INFO L354 Elim1Store]: treesize reduction 764, result has 1.7 percent of original size [2021-08-26 02:36:42,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 17 new quantified variables, introduced 78 case distinctions, treesize of input 317 treesize of output 245 [2021-08-26 02:36:59,336 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-26 02:36:59,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-08-26 02:36:59,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 02:36:59,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-08-26 02:36:59,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325891054] [2021-08-26 02:36:59,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-26 02:36:59,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:36:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-26 02:36:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1922, Unknown=0, NotChecked=0, Total=2162 [2021-08-26 02:36:59,337 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 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) [2021-08-26 02:36:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 02:36:59,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-26 02:36:59,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-08-26 02:36:59,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-08-26 02:36:59,538 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@41bd1f46 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:864) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-26 02:36:59,542 INFO L168 Benchmark]: Toolchain (without parser) took 637512.15 ms. Allocated memory was 48.2 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 23.2 MB in the beginning and 447.5 MB in the end (delta: -424.3 MB). Peak memory consumption was 680.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:36:59,542 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:36:59,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.07 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 35.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-08-26 02:36:59,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.57 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 33.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:36:59,542 INFO L168 Benchmark]: Boogie Preprocessor took 31.26 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 32.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:36:59,542 INFO L168 Benchmark]: RCFGBuilder took 425.70 ms. Allocated memory is still 58.7 MB. Free memory was 32.0 MB in the beginning and 40.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:36:59,542 INFO L168 Benchmark]: TraceAbstraction took 636713.97 ms. Allocated memory was 58.7 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 40.1 MB in the beginning and 447.5 MB in the end (delta: -407.4 MB). Peak memory consumption was 686.5 MB. Max. memory is 16.1 GB. [2021-08-26 02:36:59,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.07 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 35.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.57 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 33.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.26 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 32.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 425.70 ms. Allocated memory is still 58.7 MB. Free memory was 32.0 MB in the beginning and 40.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 636713.97 ms. Allocated memory was 58.7 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 40.1 MB in the beginning and 447.5 MB in the end (delta: -407.4 MB). Peak memory consumption was 686.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@41bd1f46 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@41bd1f46: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 02:37:01,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:37:01,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:37:01,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:37:01,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:37:01,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:37:01,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:37:01,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:37:01,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:37:01,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:37:01,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:37:01,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:37:01,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:37:01,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:37:01,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:37:01,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:37:01,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:37:01,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:37:01,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:37:01,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:37:01,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:37:01,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:37:01,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:37:01,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:37:01,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:37:01,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:37:01,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:37:01,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:37:01,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:37:01,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:37:01,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:37:01,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:37:01,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:37:01,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:37:01,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:37:01,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:37:01,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:37:01,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:37:01,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:37:01,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:37:01,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:37:01,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 02:37:01,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:37:01,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:37:01,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:37:01,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:37:01,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:37:01,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:37:01,116 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:37:01,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:37:01,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:37:01,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:37:01,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:37:01,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:37:01,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:37:01,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:37:01,118 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 02:37:01,119 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 02:37:01,119 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:37:01,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:37:01,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:37:01,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:37:01,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:37:01,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:37:01,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:37:01,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:37:01,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:37:01,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:37:01,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:37:01,121 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 02:37:01,121 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 02:37:01,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:37:01,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:37:01,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 02:37:01,122 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6961864fd80b1152371f3ae9fd5697ae273a1dc [2021-08-26 02:37:01,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:37:01,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:37:01,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:37:01,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:37:01,402 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:37:01,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-2.i [2021-08-26 02:37:01,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/016aaeeae/796746141437489c8601ec2f1a7d76cf/FLAG247435bc3 [2021-08-26 02:37:01,831 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:37:01,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i [2021-08-26 02:37:01,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/016aaeeae/796746141437489c8601ec2f1a7d76cf/FLAG247435bc3 [2021-08-26 02:37:02,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/016aaeeae/796746141437489c8601ec2f1a7d76cf [2021-08-26 02:37:02,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:37:02,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:37:02,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:37:02,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:37:02,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:37:02,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3cb60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02, skipping insertion in model container [2021-08-26 02:37:02,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:37:02,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:37:02,512 WARN L228 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/sll-token-2.i[22162,22175] [2021-08-26 02:37:02,522 WARN L228 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/sll-token-2.i[22311,22324] [2021-08-26 02:37:02,529 WARN L228 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/sll-token-2.i[22402,22415] [2021-08-26 02:37:02,531 WARN L228 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/sll-token-2.i[22484,22497] [2021-08-26 02:37:02,532 WARN L228 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/sll-token-2.i[22562,22575] [2021-08-26 02:37:02,535 WARN L228 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/sll-token-2.i[22708,22721] [2021-08-26 02:37:02,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:37:02,556 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:37:02,586 WARN L228 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/sll-token-2.i[22162,22175] [2021-08-26 02:37:02,587 WARN L228 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/sll-token-2.i[22311,22324] [2021-08-26 02:37:02,588 WARN L228 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/sll-token-2.i[22402,22415] [2021-08-26 02:37:02,589 WARN L228 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/sll-token-2.i[22484,22497] [2021-08-26 02:37:02,589 WARN L228 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/sll-token-2.i[22562,22575] [2021-08-26 02:37:02,590 WARN L228 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/sll-token-2.i[22708,22721] [2021-08-26 02:37:02,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:37:02,611 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:37:02,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02 WrapperNode [2021-08-26 02:37:02,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:37:02,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:37:02,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:37:02,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:37:02,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:37:02,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:37:02,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:37:02,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:37:02,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:37:02,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:37:02,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:37:02,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:37:02,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (1/1) ... [2021-08-26 02:37:02,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:37:02,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:37:02,739 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) [2021-08-26 02:37:02,741 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 [2021-08-26 02:37:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 02:37:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:37:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:37:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:37:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:37:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:37:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 02:37:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 02:37:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:37:02,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:37:03,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:37:03,149 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 02:37:03,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:37:03 BoogieIcfgContainer [2021-08-26 02:37:03,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:37:03,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:37:03,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:37:03,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:37:03,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:37:02" (1/3) ... [2021-08-26 02:37:03,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4307ce1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:37:03, skipping insertion in model container [2021-08-26 02:37:03,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:02" (2/3) ... [2021-08-26 02:37:03,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4307ce1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:37:03, skipping insertion in model container [2021-08-26 02:37:03,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:37:03" (3/3) ... [2021-08-26 02:37:03,170 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2021-08-26 02:37:03,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:37:03,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 02:37:03,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:37:03,214 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:37:03,214 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 02:37:03,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 42 states have internal predecessors, (66), 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) [2021-08-26 02:37:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 02:37:03,229 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:37:03,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 02:37:03,229 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:37:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:37:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash 28699849, now seen corresponding path program 1 times [2021-08-26 02:37:03,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:37:03,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591911540] [2021-08-26 02:37:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:03,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:37:03,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:37:03,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:37:03,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 02:37:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:03,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:37:03,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:03,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:03,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:37:03,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591911540] [2021-08-26 02:37:03,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591911540] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:37:03,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:37:03,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:37:03,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269555015] [2021-08-26 02:37:03,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:37:03,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:37:03,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:37:03,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:37:03,405 INFO L87 Difference]: Start difference. First operand has 43 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 42 states have internal predecessors, (66), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-26 02:37:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:37:03,495 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2021-08-26 02:37:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:37:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-08-26 02:37:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:37:03,501 INFO L225 Difference]: With dead ends: 82 [2021-08-26 02:37:03,501 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 02:37:03,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:37:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 02:37:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-26 02:37:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 35 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) [2021-08-26 02:37:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-08-26 02:37:03,522 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 5 [2021-08-26 02:37:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:37:03,522 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-08-26 02:37:03,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-26 02:37:03,522 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-08-26 02:37:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 02:37:03,523 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:37:03,523 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 02:37:03,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 02:37:03,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:37:03,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:37:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:37:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash 889651804, now seen corresponding path program 1 times [2021-08-26 02:37:03,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:37:03,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369061038] [2021-08-26 02:37:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:03,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:37:03,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:37:03,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:37:03,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 02:37:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:03,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 02:37:03,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:03,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:03,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:37:03,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369061038] [2021-08-26 02:37:03,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369061038] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:37:03,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:37:03,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:37:03,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272464420] [2021-08-26 02:37:03,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:37:03,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:37:03,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:37:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:37:03,867 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-08-26 02:37:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:37:03,943 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2021-08-26 02:37:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:37:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-08-26 02:37:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:37:03,945 INFO L225 Difference]: With dead ends: 62 [2021-08-26 02:37:03,946 INFO L226 Difference]: Without dead ends: 60 [2021-08-26 02:37:03,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:37:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-26 02:37:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2021-08-26 02:37:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 33 states have internal predecessors, (36), 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) [2021-08-26 02:37:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-08-26 02:37:03,952 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 6 [2021-08-26 02:37:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:37:03,952 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-08-26 02:37:03,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-08-26 02:37:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-08-26 02:37:03,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 02:37:03,954 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:37:03,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:37:03,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 02:37:04,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:37:04,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:37:04,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:37:04,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1061836619, now seen corresponding path program 1 times [2021-08-26 02:37:04,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:37:04,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610645768] [2021-08-26 02:37:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:04,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:37:04,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:37:04,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:37:04,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 02:37:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 02:37:04,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:04,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 7 [2021-08-26 02:37:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:04,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:04,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:37:04,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610645768] [2021-08-26 02:37:04,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610645768] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:37:04,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:37:04,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-08-26 02:37:04,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108172148] [2021-08-26 02:37:04,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 02:37:04,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:37:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 02:37:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:37:04,366 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-08-26 02:37:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:37:04,534 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-08-26 02:37:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:37:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 [2021-08-26 02:37:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:37:04,535 INFO L225 Difference]: With dead ends: 34 [2021-08-26 02:37:04,535 INFO L226 Difference]: Without dead ends: 32 [2021-08-26 02:37:04,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:37:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-26 02:37:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-26 02:37:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 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) [2021-08-26 02:37:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-08-26 02:37:04,538 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 11 [2021-08-26 02:37:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:37:04,539 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-08-26 02:37:04,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-08-26 02:37:04,539 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-08-26 02:37:04,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 02:37:04,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:37:04,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:37:04,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-26 02:37:04,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:37:04,747 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:37:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:37:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1061798883, now seen corresponding path program 1 times [2021-08-26 02:37:04,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:37:04,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519483644] [2021-08-26 02:37:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:04,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:37:04,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:37:04,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:37:04,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 02:37:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:04,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 02:37:04,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:04,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:04,975 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-08-26 02:37:04,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 46 treesize of output 35 [2021-08-26 02:37:04,989 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 02:37:04,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-08-26 02:37:05,006 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:37:05,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 31 treesize of output 31 [2021-08-26 02:37:05,111 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-26 02:37:05,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 14 [2021-08-26 02:37:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:05,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:05,210 INFO L354 Elim1Store]: treesize reduction 28, result has 26.3 percent of original size [2021-08-26 02:37:05,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 45 treesize of output 34 [2021-08-26 02:37:05,222 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:37:05,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 41 [2021-08-26 02:37:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:05,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:37:05,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519483644] [2021-08-26 02:37:05,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519483644] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:37:05,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:37:05,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-08-26 02:37:05,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184423334] [2021-08-26 02:37:05,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:37:05,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:37:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:37:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:37:05,379 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-08-26 02:37:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:37:05,758 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2021-08-26 02:37:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:37:05,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 [2021-08-26 02:37:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:37:05,759 INFO L225 Difference]: With dead ends: 66 [2021-08-26 02:37:05,759 INFO L226 Difference]: Without dead ends: 42 [2021-08-26 02:37:05,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 02:37:05,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-26 02:37:05,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-08-26 02:37:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 37 states have internal predecessors, (41), 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) [2021-08-26 02:37:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-08-26 02:37:05,763 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 11 [2021-08-26 02:37:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:37:05,763 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-08-26 02:37:05,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-08-26 02:37:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-08-26 02:37:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 02:37:05,763 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:37:05,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:37:05,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-08-26 02:37:05,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:37:05,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:37:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:37:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1843657908, now seen corresponding path program 1 times [2021-08-26 02:37:05,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:37:05,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537129614] [2021-08-26 02:37:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:05,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:37:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:37:05,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:37:05,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-26 02:37:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:06,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 02:37:06,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:06,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:06,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:06,145 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-26 02:37:06,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 28 [2021-08-26 02:37:06,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:37:06,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2021-08-26 02:37:06,391 INFO L354 Elim1Store]: treesize reduction 118, result has 13.9 percent of original size [2021-08-26 02:37:06,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 69 [2021-08-26 02:37:06,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:37:06,424 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-08-26 02:37:06,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 65 [2021-08-26 02:37:06,441 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-08-26 02:37:06,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 57 [2021-08-26 02:37:06,791 INFO L354 Elim1Store]: treesize reduction 33, result has 10.8 percent of original size [2021-08-26 02:37:06,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-08-26 02:37:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:06,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:08,894 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_2 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_10| (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset) (_ bv1 32)) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_2)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_10| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_10|) (_ bv4 32) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_10|))))) is different from false [2021-08-26 02:37:11,158 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0.offset_35 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.base_35 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_10| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~x~0.base_35))) (= (_ bv0 32) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_3)))) (store .cse1 v_ULTIMATE.start_main_~x~0.base_35 (store (store (select .cse1 v_ULTIMATE.start_main_~x~0.base_35) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_35) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_35 v_DerPreprocessor_2))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_10| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_10|) (_ bv4 32) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~x~0.base_35 (_ bv1 1)) |v_ULTIMATE.start_main_#t~malloc7.base_10|)))))))) is different from false [2021-08-26 02:37:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-08-26 02:37:11,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:37:11,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537129614] [2021-08-26 02:37:11,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537129614] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 02:37:11,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:37:11,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-26 02:37:11,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35775420] [2021-08-26 02:37:11,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 02:37:11,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:37:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 02:37:11,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=30, Unknown=2, NotChecked=22, Total=72 [2021-08-26 02:37:11,180 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-08-26 02:37:13,281 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~head~0.base c_ULTIMATE.start_main_~x~0.base)) (forall ((v_DerPreprocessor_2 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_10| (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset) (_ bv1 32)) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_2)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_10| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_10|) (_ bv4 32) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_10|))))) (exists ((v_arrayElimCell_9 (_ BitVec 1))) (let ((.cse1 (bvneg v_arrayElimCell_9))) (and (= (_ bv0 1) (bvadd (bvneg .cse1) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| c_ULTIMATE.start_main_~head~0.base)))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset)) (_ bv0 32)) (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~x~0.base))) (_ bv1 1)))) is different from false [2021-08-26 02:37:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:37:13,631 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-08-26 02:37:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:37:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 [2021-08-26 02:37:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:37:13,632 INFO L225 Difference]: With dead ends: 60 [2021-08-26 02:37:13,632 INFO L226 Difference]: Without dead ends: 58 [2021-08-26 02:37:13,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6171.7ms TimeCoverageRelationStatistics Valid=25, Invalid=40, Unknown=3, NotChecked=42, Total=110 [2021-08-26 02:37:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-26 02:37:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2021-08-26 02:37:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 47 states have internal predecessors, (53), 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) [2021-08-26 02:37:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-08-26 02:37:13,636 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 14 [2021-08-26 02:37:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:37:13,636 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-08-26 02:37:13,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-08-26 02:37:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-08-26 02:37:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 02:37:13,637 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:37:13,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:37:13,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-26 02:37:13,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:37:13,838 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 02:37:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:37:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1359067491, now seen corresponding path program 1 times [2021-08-26 02:37:13,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:37:13,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553225320] [2021-08-26 02:37:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:13,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:37:13,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:37:13,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:37:13,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-26 02:37:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:13,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 02:37:13,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:13,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:14,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 65 [2021-08-26 02:37:14,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2021-08-26 02:37:14,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 38 [2021-08-26 02:37:14,053 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:37:14,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 38 treesize of output 38 [2021-08-26 02:37:14,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 29 [2021-08-26 02:37:14,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 18 [2021-08-26 02:37:14,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:14,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:14,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 330 treesize of output 322 [2021-08-26 02:37:14,442 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:37:14,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 454 treesize of output 462 [2021-08-26 02:37:14,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2596 treesize of output 2484 [2021-08-26 02:37:14,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:37:14,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553225320] [2021-08-26 02:37:14,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-26 02:37:14,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1286808972] [2021-08-26 02:37:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:14,601 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 02:37:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 02:37:14,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 02:37:14,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-08-26 02:37:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:14,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 02:37:14,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:14,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:14,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 64 [2021-08-26 02:37:14,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 73 [2021-08-26 02:37:14,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 37 [2021-08-26 02:37:14,873 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:37:14,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 37 [2021-08-26 02:37:15,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 29 [2021-08-26 02:37:15,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 18 [2021-08-26 02:37:15,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:15,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:15,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 175 treesize of output 171 [2021-08-26 02:37:15,201 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:37:15,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 253 [2021-08-26 02:37:15,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 629 treesize of output 601 [2021-08-26 02:37:15,444 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:37:15,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 104 treesize of output 1 [2021-08-26 02:37:21,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:37:21,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397038837] [2021-08-26 02:37:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:37:21,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:37:21,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:37:21,988 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:37:21,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 02:37:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:37:22,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 02:37:22,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:37:22,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:22,228 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-26 02:37:22,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 88 treesize of output 64 [2021-08-26 02:37:22,255 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-26 02:37:22,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 64 treesize of output 40 [2021-08-26 02:37:22,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 37 [2021-08-26 02:37:22,273 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:37:22,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 37 [2021-08-26 02:37:22,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 33 [2021-08-26 02:37:22,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 18 [2021-08-26 02:37:22,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-26 02:37:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:37:22,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:37:22,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 175 treesize of output 171 [2021-08-26 02:37:22,595 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:37:22,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 253 [2021-08-26 02:37:22,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1304 treesize of output 1248 [2021-08-26 02:37:22,799 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-08-26 02:37:22,928 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-08-26 02:37:29,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:37:29,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:37:29,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 02:37:29,516 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 02:37:29,516 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 02:37:29,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:37:29,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:37:29,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:37:29,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:37:29,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:37:29,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:37:29,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 02:37:29,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-08-26 02:37:29,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-08-26 02:37:30,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:37:30,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:37:30,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:37:30 BoogieIcfgContainer [2021-08-26 02:37:30,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:37:30,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:37:30,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:37:30,139 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:37:30,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:37:03" (3/4) ... [2021-08-26 02:37:30,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 02:37:30,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:37:30,143 INFO L168 Benchmark]: Toolchain (without parser) took 27919.62 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 30.3 MB in the beginning and 106.2 MB in the end (delta: -75.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-08-26 02:37:30,144 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:37:30,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.39 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 42.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-08-26 02:37:30,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.04 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 40.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:37:30,147 INFO L168 Benchmark]: Boogie Preprocessor took 44.00 ms. Allocated memory is still 67.1 MB. Free memory was 40.3 MB in the beginning and 38.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 02:37:30,148 INFO L168 Benchmark]: RCFGBuilder took 435.86 ms. Allocated memory is still 67.1 MB. Free memory was 38.3 MB in the beginning and 31.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-08-26 02:37:30,148 INFO L168 Benchmark]: TraceAbstraction took 26985.72 ms. Allocated memory was 67.1 MB in the beginning and 144.7 MB in the end (delta: 77.6 MB). Free memory was 31.1 MB in the beginning and 106.2 MB in the end (delta: -75.0 MB). Peak memory consumption was 72.2 MB. Max. memory is 16.1 GB. [2021-08-26 02:37:30,148 INFO L168 Benchmark]: Witness Printer took 3.23 ms. Allocated memory is still 144.7 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:37:30,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.39 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 42.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.04 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 40.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.00 ms. Allocated memory is still 67.1 MB. Free memory was 40.3 MB in the beginning and 38.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 435.86 ms. Allocated memory is still 67.1 MB. Free memory was 38.3 MB in the beginning and 31.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26985.72 ms. Allocated memory was 67.1 MB in the beginning and 144.7 MB in the end (delta: 77.6 MB). Free memory was 31.1 MB in the beginning and 106.2 MB in the end (delta: -75.0 MB). Peak memory consumption was 72.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.23 ms. Allocated memory is still 144.7 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1033]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1026] EXPR x->data [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data [L1031] COND FALSE !(!(1 == x->data)) [L1032] EXPR x->next [L1032] x = x->next [L1033] EXPR x->data [L1033] COND TRUE !(2 == x->data) [L1033] reach_error() - UnprovableResult [Line: 1016]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 26921.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 3189.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 153 SDtfs, 97 SDslu, 337 SDs, 0 SdLazy, 248 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 854.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6332.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.3ms SsaConstructionTime, 132.9ms SatisfiabilityAnalysisTime, 5903.1ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 84 ConstructedInterpolants, 19 QuantifiedInterpolants, 1078 SizeOfPredicates, 16 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 02:37:30,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...