./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c --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/array-cav19/array_init_pair_symmetr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 b3db4dcc40e0d572acd69dedfd6609d286e8c21e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 18:38:09,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 18:38:09,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 18:38:09,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 18:38:09,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 18:38:09,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 18:38:09,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 18:38:09,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 18:38:09,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 18:38:09,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 18:38:09,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 18:38:09,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 18:38:09,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 18:38:09,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 18:38:09,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 18:38:09,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 18:38:09,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 18:38:09,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 18:38:09,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 18:38:09,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 18:38:09,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 18:38:09,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 18:38:09,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 18:38:09,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 18:38:09,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 18:38:09,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 18:38:09,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 18:38:09,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 18:38:09,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 18:38:09,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 18:38:09,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 18:38:09,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 18:38:09,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 18:38:09,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 18:38:09,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 18:38:09,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 18:38:09,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 18:38:09,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 18:38:09,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 18:38:09,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 18:38:09,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 18:38:09,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 18:38:09,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 18:38:09,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 18:38:09,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 18:38:09,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 18:38:09,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 18:38:09,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 18:38:09,938 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 18:38:09,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 18:38:09,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 18:38:09,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 18:38:09,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 18:38:09,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 18:38:09,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 18:38:09,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 18:38:09,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 18:38:09,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 18:38:09,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 18:38:09,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 18:38:09,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 18:38:09,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 18:38:09,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 18:38:09,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 18:38:09,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 18:38:09,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 18:38:09,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 18:38:09,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 18:38:09,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 18:38:09,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 18:38:09,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 18:38:09,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 18:38:09,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3db4dcc40e0d572acd69dedfd6609d286e8c21e [2021-08-25 18:38:10,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 18:38:10,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 18:38:10,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 18:38:10,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 18:38:10,218 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 18:38:10,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c [2021-08-25 18:38:10,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a0b66a94/58a370b02a1d491cb3cbde22d9be83c8/FLAG2d9d14087 [2021-08-25 18:38:10,606 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 18:38:10,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c [2021-08-25 18:38:10,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a0b66a94/58a370b02a1d491cb3cbde22d9be83c8/FLAG2d9d14087 [2021-08-25 18:38:11,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a0b66a94/58a370b02a1d491cb3cbde22d9be83c8 [2021-08-25 18:38:11,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 18:38:11,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 18:38:11,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 18:38:11,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 18:38:11,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 18:38:11,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f6d159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11, skipping insertion in model container [2021-08-25 18:38:11,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 18:38:11,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 18:38:11,185 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/array-cav19/array_init_pair_symmetr.c[414,427] [2021-08-25 18:38:11,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 18:38:11,199 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 18:38:11,206 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/array-cav19/array_init_pair_symmetr.c[414,427] [2021-08-25 18:38:11,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 18:38:11,223 INFO L208 MainTranslator]: Completed translation [2021-08-25 18:38:11,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11 WrapperNode [2021-08-25 18:38:11,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 18:38:11,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 18:38:11,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 18:38:11,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 18:38:11,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 18:38:11,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 18:38:11,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 18:38:11,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 18:38:11,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 18:38:11,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 18:38:11,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 18:38:11,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 18:38:11,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (1/1) ... [2021-08-25 18:38:11,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 18:38:11,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 18:38:11,305 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) [2021-08-25 18:38:11,330 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 [2021-08-25 18:38:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 18:38:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 18:38:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-25 18:38:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 18:38:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 18:38:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-25 18:38:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-25 18:38:11,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 18:38:11,546 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-08-25 18:38:11,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:38:11 BoogieIcfgContainer [2021-08-25 18:38:11,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 18:38:11,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 18:38:11,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 18:38:11,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 18:38:11,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:38:11" (1/3) ... [2021-08-25 18:38:11,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f85c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:38:11, skipping insertion in model container [2021-08-25 18:38:11,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:38:11" (2/3) ... [2021-08-25 18:38:11,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f85c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:38:11, skipping insertion in model container [2021-08-25 18:38:11,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:38:11" (3/3) ... [2021-08-25 18:38:11,552 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr.c [2021-08-25 18:38:11,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 18:38:11,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 18:38:11,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 18:38:11,604 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 [2021-08-25 18:38:11,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 18:38:11,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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) [2021-08-25 18:38:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-25 18:38:11,615 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 18:38:11,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 18:38:11,616 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 18:38:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 18:38:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1143788744, now seen corresponding path program 1 times [2021-08-25 18:38:11,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 18:38:11,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021057934] [2021-08-25 18:38:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 18:38:11,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 18:38:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 18:38:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 18:38:11,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 18:38:11,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021057934] [2021-08-25 18:38:11,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021057934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 18:38:11,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 18:38:11,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 18:38:11,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3100304] [2021-08-25 18:38:11,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 18:38:11,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 18:38:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 18:38:11,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 18:38:11,729 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-25 18:38:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 18:38:11,737 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-08-25 18:38:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 18:38:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-08-25 18:38:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 18:38:11,743 INFO L225 Difference]: With dead ends: 38 [2021-08-25 18:38:11,743 INFO L226 Difference]: Without dead ends: 16 [2021-08-25 18:38:11,746 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 [2021-08-25 18:38:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-25 18:38:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-25 18:38:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2021-08-25 18:38:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-08-25 18:38:11,764 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2021-08-25 18:38:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 18:38:11,765 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-08-25 18:38:11,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-25 18:38:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-08-25 18:38:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-25 18:38:11,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 18:38:11,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 18:38:11,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 18:38:11,766 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 18:38:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 18:38:11,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1809365643, now seen corresponding path program 1 times [2021-08-25 18:38:11,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 18:38:11,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596895730] [2021-08-25 18:38:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 18:38:11,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 18:38:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 18:38:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 18:38:11,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 18:38:11,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596895730] [2021-08-25 18:38:11,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596895730] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 18:38:11,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 18:38:11,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 18:38:11,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812191504] [2021-08-25 18:38:11,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 18:38:11,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 18:38:11,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 18:38:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 18:38:11,830 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-08-25 18:38:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 18:38:11,860 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-08-25 18:38:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 18:38:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-08-25 18:38:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 18:38:11,861 INFO L225 Difference]: With dead ends: 32 [2021-08-25 18:38:11,862 INFO L226 Difference]: Without dead ends: 22 [2021-08-25 18:38:11,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 18:38:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-25 18:38:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-08-25 18:38:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-08-25 18:38:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-08-25 18:38:11,866 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2021-08-25 18:38:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 18:38:11,866 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-08-25 18:38:11,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-08-25 18:38:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-08-25 18:38:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-25 18:38:11,867 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 18:38:11,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 18:38:11,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 18:38:11,867 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 18:38:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 18:38:11,868 INFO L82 PathProgramCache]: Analyzing trace with hash 129067660, now seen corresponding path program 1 times [2021-08-25 18:38:11,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 18:38:11,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874423976] [2021-08-25 18:38:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 18:38:11,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 18:38:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 18:38:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-25 18:38:11,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 18:38:11,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874423976] [2021-08-25 18:38:11,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874423976] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:11,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441230990] [2021-08-25 18:38:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 18:38:11,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 18:38:11,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 18:38:11,928 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) [2021-08-25 18:38:11,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-25 18:38:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 18:38:11,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-25 18:38:11,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 18:38:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-25 18:38:12,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441230990] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:12,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 18:38:12,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-08-25 18:38:12,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541442074] [2021-08-25 18:38:12,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 18:38:12,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 18:38:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 18:38:12,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-25 18:38:12,144 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-08-25 18:38:12,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 18:38:12,198 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-08-25 18:38:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-25 18:38:12,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 15 [2021-08-25 18:38:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 18:38:12,199 INFO L225 Difference]: With dead ends: 45 [2021-08-25 18:38:12,199 INFO L226 Difference]: Without dead ends: 34 [2021-08-25 18:38:12,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-25 18:38:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-25 18:38:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2021-08-25 18:38:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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) [2021-08-25 18:38:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-08-25 18:38:12,203 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2021-08-25 18:38:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 18:38:12,203 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-08-25 18:38:12,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-08-25 18:38:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-08-25 18:38:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-25 18:38:12,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 18:38:12,204 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 18:38:12,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-25 18:38:12,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 18:38:12,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 18:38:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 18:38:12,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1216964829, now seen corresponding path program 2 times [2021-08-25 18:38:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 18:38:12,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392235489] [2021-08-25 18:38:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 18:38:12,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 18:38:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 18:38:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-25 18:38:12,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 18:38:12,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392235489] [2021-08-25 18:38:12,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392235489] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:12,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898930088] [2021-08-25 18:38:12,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-25 18:38:12,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 18:38:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 18:38:12,484 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) [2021-08-25 18:38:12,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-25 18:38:12,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-25 18:38:12,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-25 18:38:12,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-25 18:38:12,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 18:38:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-25 18:38:12,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898930088] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:12,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 18:38:12,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-08-25 18:38:12,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332568256] [2021-08-25 18:38:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-25 18:38:12,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 18:38:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-25 18:38:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-08-25 18:38:12,641 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 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) [2021-08-25 18:38:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 18:38:12,684 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-08-25 18:38:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-25 18:38:12,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 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 21 [2021-08-25 18:38:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 18:38:12,685 INFO L225 Difference]: With dead ends: 59 [2021-08-25 18:38:12,685 INFO L226 Difference]: Without dead ends: 46 [2021-08-25 18:38:12,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-08-25 18:38:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-25 18:38:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2021-08-25 18:38:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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) [2021-08-25 18:38:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-08-25 18:38:12,689 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2021-08-25 18:38:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 18:38:12,689 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-08-25 18:38:12,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 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) [2021-08-25 18:38:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-08-25 18:38:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-25 18:38:12,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 18:38:12,690 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 18:38:12,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-25 18:38:12,907 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,SelfDestructingSolverStorable3 [2021-08-25 18:38:12,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 18:38:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 18:38:12,908 INFO L82 PathProgramCache]: Analyzing trace with hash -655819974, now seen corresponding path program 3 times [2021-08-25 18:38:12,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 18:38:12,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332539851] [2021-08-25 18:38:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 18:38:12,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 18:38:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 18:38:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-25 18:38:12,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 18:38:12,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332539851] [2021-08-25 18:38:12,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332539851] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890655194] [2021-08-25 18:38:12,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-25 18:38:12,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 18:38:12,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 18:38:13,013 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) [2021-08-25 18:38:13,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-25 18:38:13,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-25 18:38:13,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-25 18:38:13,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-25 18:38:13,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 18:38:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-25 18:38:13,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890655194] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:13,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 18:38:13,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-08-25 18:38:13,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322120408] [2021-08-25 18:38:13,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-25 18:38:13,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 18:38:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-25 18:38:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-08-25 18:38:13,214 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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) [2021-08-25 18:38:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 18:38:13,277 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-08-25 18:38:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-25 18:38:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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) Word has length 27 [2021-08-25 18:38:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 18:38:13,278 INFO L225 Difference]: With dead ends: 73 [2021-08-25 18:38:13,278 INFO L226 Difference]: Without dead ends: 58 [2021-08-25 18:38:13,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-08-25 18:38:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-25 18:38:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 36. [2021-08-25 18:38:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) 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) [2021-08-25 18:38:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-08-25 18:38:13,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 27 [2021-08-25 18:38:13,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 18:38:13,282 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-08-25 18:38:13,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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) [2021-08-25 18:38:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-08-25 18:38:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-25 18:38:13,283 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 18:38:13,283 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 18:38:13,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-25 18:38:13,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 18:38:13,502 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 18:38:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 18:38:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1998403887, now seen corresponding path program 4 times [2021-08-25 18:38:13,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 18:38:13,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507249864] [2021-08-25 18:38:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 18:38:13,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 18:38:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 18:38:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 18:38:13,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 18:38:13,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507249864] [2021-08-25 18:38:13,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507249864] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:13,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329157729] [2021-08-25 18:38:13,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-25 18:38:13,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 18:38:13,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 18:38:13,588 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) [2021-08-25 18:38:13,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-25 18:38:13,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-25 18:38:13,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-25 18:38:13,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-25 18:38:13,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 18:38:13,690 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-25 18:38:13,691 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 23 treesize of output 19 [2021-08-25 18:38:13,811 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 40 treesize of output 24 [2021-08-25 18:38:13,937 INFO L354 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2021-08-25 18:38:13,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 47 [2021-08-25 18:38:14,146 INFO L354 Elim1Store]: treesize reduction 162, result has 20.2 percent of original size [2021-08-25 18:38:14,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 82 [2021-08-25 18:38:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 18:38:16,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329157729] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 18:38:16,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 18:38:16,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-08-25 18:38:16,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21576158] [2021-08-25 18:38:16,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-25 18:38:16,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 18:38:16,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-25 18:38:16,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-08-25 18:38:16,387 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 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) [2021-08-25 18:38:16,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 18:38:16,893 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-08-25 18:38:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-25 18:38:16,894 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 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 33 [2021-08-25 18:38:16,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 18:38:16,894 INFO L225 Difference]: With dead ends: 44 [2021-08-25 18:38:16,894 INFO L226 Difference]: Without dead ends: 0 [2021-08-25 18:38:16,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2507.1ms TimeCoverageRelationStatistics Valid=138, Invalid=511, Unknown=1, NotChecked=0, Total=650 [2021-08-25 18:38:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-25 18:38:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-25 18:38:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-25 18:38:16,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-25 18:38:16,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-08-25 18:38:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 18:38:16,895 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-25 18:38:16,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 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) [2021-08-25 18:38:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-25 18:38:16,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-25 18:38:16,897 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 18:38:16,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-25 18:38:17,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 18:38:17,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-25 18:38:17,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 18:38:17,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 18:38:17,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 18:38:17,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 18:38:17,299 INFO L860 garLoopResultBuilder]: At program point L31(lines 11 32) the Hoare annotation is: true [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 30) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L853 garLoopResultBuilder]: At program point L29-3(lines 29 30) the Hoare annotation is: false [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L29-4(lines 29 30) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L853 garLoopResultBuilder]: At program point L25-3(lines 25 27) the Hoare annotation is: false [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L25-4(lines 25 27) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 7) no Hoare annotation was computed. [2021-08-25 18:38:17,300 INFO L857 garLoopResultBuilder]: For program point L18-2(lines 18 23) no Hoare annotation was computed. [2021-08-25 18:38:17,301 INFO L853 garLoopResultBuilder]: At program point L18-3(lines 18 23) the Hoare annotation is: (let ((.cse0 (exists ((v_ULTIMATE.start_main_~i~0_29 Int)) (and (= 0 (let ((.cse10 (* v_ULTIMATE.start_main_~i~0_29 4))) (+ (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ .cse10 |ULTIMATE.start_main_~#a~0.offset|)) (select (select |#memory_int| |ULTIMATE.start_main_~#b~0.base|) (+ |ULTIMATE.start_main_~#b~0.offset| .cse10))))) (<= 2 v_ULTIMATE.start_main_~i~0_29) (<= (+ v_ULTIMATE.start_main_~i~0_29 1) ULTIMATE.start_main_~i~0)))) (.cse5 (= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#b~0.base|) (+ |ULTIMATE.start_main_~#b~0.offset| 4)) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 4))) 0)) (.cse1 (not (= |ULTIMATE.start_main_~#a~0.base| |ULTIMATE.start_main_~#b~0.base|))) (.cse2 (not (= |ULTIMATE.start_main_~#b~0.base| |ULTIMATE.start_main_~#c~0.base|))) (.cse3 (<= 100000 ~N~0)) (.cse4 (not (= |ULTIMATE.start_main_~#a~0.base| |ULTIMATE.start_main_~#c~0.base|)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= ULTIMATE.start_main_~i~0 3)) (and .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~i~0 1) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (exists ((v_ULTIMATE.start_main_~i~0_29 Int) (ULTIMATE.start_main_~i~0 Int)) (let ((.cse8 (select |#memory_int| |ULTIMATE.start_main_~#b~0.base|)) (.cse6 (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|))) (and (= 0 (let ((.cse7 (* v_ULTIMATE.start_main_~i~0_29 4))) (+ (select .cse6 (+ .cse7 |ULTIMATE.start_main_~#a~0.offset|)) (select .cse8 (+ |ULTIMATE.start_main_~#b~0.offset| .cse7))))) (<= 2 v_ULTIMATE.start_main_~i~0_29) (= (let ((.cse9 (* ULTIMATE.start_main_~i~0 4))) (+ (select .cse8 (+ |ULTIMATE.start_main_~#b~0.offset| .cse9)) (select .cse6 (+ |ULTIMATE.start_main_~#a~0.offset| .cse9)))) 0) (<= (+ v_ULTIMATE.start_main_~i~0_29 1) ULTIMATE.start_main_~i~0))))) (and .cse1 (<= 2 ULTIMATE.start_main_~i~0) .cse2 (<= ULTIMATE.start_main_~i~0 2) .cse4 .cse5 (<= (+ 99998 ULTIMATE.start_main_~i~0) ~N~0)) (and .cse1 .cse2 (= ULTIMATE.start_main_~i~0 0) .cse3 .cse4))) [2021-08-25 18:38:17,301 INFO L857 garLoopResultBuilder]: For program point L18-4(lines 18 23) no Hoare annotation was computed. [2021-08-25 18:38:17,301 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-08-25 18:38:17,304 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 18:38:17,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,311 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,311 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,311 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,311 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,311 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,311 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,313 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,313 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,318 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,318 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,318 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,318 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,320 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,320 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,320 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,320 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,320 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 06:38:17 BoogieIcfgContainer [2021-08-25 18:38:17,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 18:38:17,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 18:38:17,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 18:38:17,336 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 18:38:17,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:38:11" (3/4) ... [2021-08-25 18:38:17,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-25 18:38:17,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-25 18:38:17,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-25 18:38:17,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 18:38:17,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 18:38:17,359 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && i <= 3) || ((((!(a == b) && !(b == c)) && 100000 <= N) && i == 1) && !(a == c))) || (((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && (\exists v_ULTIMATE.start_main_~i~0_29 : int, ULTIMATE.start_main_~i~0 : int :: ((0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && unknown-#memory_int-unknown[b][b + ULTIMATE.start_main_~i~0 * 4] + unknown-#memory_int-unknown[a][a + ULTIMATE.start_main_~i~0 * 4] == 0) && v_ULTIMATE.start_main_~i~0_29 + 1 <= ULTIMATE.start_main_~i~0))) || ((((((!(a == b) && 2 <= i) && !(b == c)) && i <= 2) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && 99998 + i <= N)) || ((((!(a == b) && !(b == c)) && i == 0) && 100000 <= N) && !(a == c)) [2021-08-25 18:38:17,366 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 18:38:17,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 18:38:17,367 INFO L168 Benchmark]: Toolchain (without parser) took 6315.01 ms. Allocated memory was 52.4 MB in the beginning and 121.6 MB in the end (delta: 69.2 MB). Free memory was 30.1 MB in the beginning and 42.6 MB in the end (delta: -12.5 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-08-25 18:38:17,368 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 18:38:17,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.00 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 30.0 MB in the beginning and 51.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-08-25 18:38:17,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.68 ms. Allocated memory is still 67.1 MB. Free memory was 51.5 MB in the beginning and 49.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 18:38:17,368 INFO L168 Benchmark]: Boogie Preprocessor took 14.96 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 18:38:17,369 INFO L168 Benchmark]: RCFGBuilder took 261.09 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 33.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-25 18:38:17,369 INFO L168 Benchmark]: TraceAbstraction took 5774.30 ms. Allocated memory was 67.1 MB in the beginning and 121.6 MB in the end (delta: 54.5 MB). Free memory was 33.4 MB in the beginning and 45.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-08-25 18:38:17,369 INFO L168 Benchmark]: Witness Printer took 43.83 ms. Allocated memory is still 121.6 MB. Free memory was 45.8 MB in the beginning and 42.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 18:38:17,370 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 52.4 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 169.00 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 30.0 MB in the beginning and 51.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.68 ms. Allocated memory is still 67.1 MB. Free memory was 51.5 MB in the beginning and 49.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.96 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 261.09 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 33.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5774.30 ms. Allocated memory was 67.1 MB in the beginning and 121.6 MB in the end (delta: 54.5 MB). Free memory was 33.4 MB in the beginning and 45.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * Witness Printer took 43.83 ms. Allocated memory is still 121.6 MB. Free memory was 45.8 MB in the beginning and 42.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] * 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 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5714.5ms, OverallIterations: 6, TraceHistogramMax: 4, EmptinessCheckTime: 7.6ms, AutomataDifference: 736.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 194.1ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 224 SDslu, 104 SDs, 0 SdLazy, 269 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 245.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2624.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 52 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 266 HoareAnnotationTreeSize, 4 FomulaSimplifications, 121 FormulaSimplificationTreeSizeReduction, 14.5ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 174.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 52.8ms SsaConstructionTime, 175.7ms SatisfiabilityAnalysisTime, 3375.5ms InterpolantComputationTime, 210 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 200 ConstructedInterpolants, 6 QuantifiedInterpolants, 1297 SizeOfPredicates, 10 NumberOfNonLiveVariables, 387 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 69/160 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant [2021-08-25 18:38:17,377 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,378 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,378 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,378 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,378 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,378 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,378 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,379 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,379 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,379 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,379 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,379 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,379 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,379 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,380 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,383 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,383 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2021-08-25 18:38:17,383 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_29,QUANTIFIED] [2021-08-25 18:38:17,383 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] Derived loop invariant: ((((((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && i <= 3) || ((((!(a == b) && !(b == c)) && 100000 <= N) && i == 1) && !(a == c))) || (((((((\exists v_ULTIMATE.start_main_~i~0_29 : int :: (0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && v_ULTIMATE.start_main_~i~0_29 + 1 <= i) && !(a == b)) && !(b == c)) && 100000 <= N) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && (\exists v_ULTIMATE.start_main_~i~0_29 : int, ULTIMATE.start_main_~i~0 : int :: ((0 == unknown-#memory_int-unknown[a][v_ULTIMATE.start_main_~i~0_29 * 4 + a] + unknown-#memory_int-unknown[b][b + v_ULTIMATE.start_main_~i~0_29 * 4] && 2 <= v_ULTIMATE.start_main_~i~0_29) && unknown-#memory_int-unknown[b][b + ULTIMATE.start_main_~i~0 * 4] + unknown-#memory_int-unknown[a][a + ULTIMATE.start_main_~i~0 * 4] == 0) && v_ULTIMATE.start_main_~i~0_29 + 1 <= ULTIMATE.start_main_~i~0))) || ((((((!(a == b) && 2 <= i) && !(b == c)) && i <= 2) && !(a == c)) && unknown-#memory_int-unknown[b][b + 4] + unknown-#memory_int-unknown[a][a + 4] == 0) && 99998 + i <= N)) || ((((!(a == b) && !(b == c)) && i == 0) && 100000 <= N) && !(a == c)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-25 18:38:17,412 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...