./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum_array-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/loops/sum_array-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 84226515a723f10f2a919f265c45890771224ac18b5dd5f986441c53175929f5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 09:38:51,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 09:38:51,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 09:38:51,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 09:38:51,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 09:38:51,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 09:38:51,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 09:38:51,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 09:38:51,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 09:38:51,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 09:38:51,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 09:38:51,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 09:38:51,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 09:38:51,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 09:38:51,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 09:38:51,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 09:38:51,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 09:38:51,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 09:38:51,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 09:38:51,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 09:38:51,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 09:38:51,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 09:38:51,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 09:38:51,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 09:38:51,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 09:38:51,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 09:38:51,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 09:38:51,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 09:38:51,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 09:38:51,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 09:38:51,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 09:38:51,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 09:38:51,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 09:38:51,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 09:38:51,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 09:38:51,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 09:38:51,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 09:38:51,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 09:38:51,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 09:38:51,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 09:38:51,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 09:38:51,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 09:38:51,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 09:38:51,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 09:38:51,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 09:38:51,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 09:38:51,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 09:38:51,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 09:38:51,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 09:38:51,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 09:38:51,372 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 09:38:51,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 09:38:51,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 09:38:51,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 09:38:51,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 09:38:51,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 09:38:51,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 09:38:51,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 09:38:51,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 09:38:51,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 09:38:51,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 09:38:51,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 09:38:51,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 09:38:51,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 09:38:51,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 09:38:51,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 09:38:51,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 09:38:51,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 09:38:51,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 09:38:51,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 09:38:51,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 09:38:51,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 09:38:51,377 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 09:38:51,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 09:38:51,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 09:38:51,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 09:38:51,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84226515a723f10f2a919f265c45890771224ac18b5dd5f986441c53175929f5 [2021-12-17 09:38:51,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 09:38:51,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 09:38:51,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 09:38:51,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 09:38:51,553 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 09:38:51,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-2.i [2021-12-17 09:38:51,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d3073e0/b76e8247694b43ddbca42db514ac0ba0/FLAGf21d51113 [2021-12-17 09:38:51,948 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 09:38:51,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2.i [2021-12-17 09:38:51,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d3073e0/b76e8247694b43ddbca42db514ac0ba0/FLAGf21d51113 [2021-12-17 09:38:51,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d3073e0/b76e8247694b43ddbca42db514ac0ba0 [2021-12-17 09:38:51,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 09:38:51,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 09:38:51,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 09:38:51,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 09:38:51,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 09:38:51,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:38:51" (1/1) ... [2021-12-17 09:38:51,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424828db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:51, skipping insertion in model container [2021-12-17 09:38:51,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:38:51" (1/1) ... [2021-12-17 09:38:51,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 09:38:51,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 09:38:52,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2.i[938,951] [2021-12-17 09:38:52,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 09:38:52,141 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 09:38:52,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2.i[938,951] [2021-12-17 09:38:52,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 09:38:52,167 INFO L208 MainTranslator]: Completed translation [2021-12-17 09:38:52,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52 WrapperNode [2021-12-17 09:38:52,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 09:38:52,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 09:38:52,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 09:38:52,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 09:38:52,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,203 INFO L137 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2021-12-17 09:38:52,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 09:38:52,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 09:38:52,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 09:38:52,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 09:38:52,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 09:38:52,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 09:38:52,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 09:38:52,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 09:38:52,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (1/1) ... [2021-12-17 09:38:52,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 09:38:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:38:52,257 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) [2021-12-17 09:38:52,263 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 [2021-12-17 09:38:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 09:38:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 09:38:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 09:38:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 09:38:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 09:38:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 09:38:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 09:38:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 09:38:52,332 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 09:38:52,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 09:38:52,419 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 09:38:52,423 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 09:38:52,424 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 09:38:52,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:38:52 BoogieIcfgContainer [2021-12-17 09:38:52,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 09:38:52,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 09:38:52,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 09:38:52,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 09:38:52,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:38:51" (1/3) ... [2021-12-17 09:38:52,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aea7c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:38:52, skipping insertion in model container [2021-12-17 09:38:52,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:38:52" (2/3) ... [2021-12-17 09:38:52,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aea7c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:38:52, skipping insertion in model container [2021-12-17 09:38:52,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:38:52" (3/3) ... [2021-12-17 09:38:52,430 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-2.i [2021-12-17 09:38:52,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 09:38:52,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 09:38:52,470 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 09:38:52,488 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 09:38:52,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 09:38:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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) [2021-12-17 09:38:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-17 09:38:52,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:38:52,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:38:52,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:38:52,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:38:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1741268329, now seen corresponding path program 1 times [2021-12-17 09:38:52,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:38:52,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084114984] [2021-12-17 09:38:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:38:52,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:38:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:38:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:38:52,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:38:52,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084114984] [2021-12-17 09:38:52,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084114984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 09:38:52,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 09:38:52,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 09:38:52,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073532827] [2021-12-17 09:38:52,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 09:38:52,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 09:38:52,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:38:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 09:38:52,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 09:38:52,719 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:38:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:38:52,729 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2021-12-17 09:38:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 09:38:52,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-17 09:38:52,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:38:52,735 INFO L225 Difference]: With dead ends: 41 [2021-12-17 09:38:52,735 INFO L226 Difference]: Without dead ends: 19 [2021-12-17 09:38:52,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 09:38:52,740 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 09:38:52,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 09:38:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-17 09:38:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-17 09:38:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:38:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-12-17 09:38:52,767 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 11 [2021-12-17 09:38:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:38:52,768 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-12-17 09:38:52,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:38:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-12-17 09:38:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-17 09:38:52,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:38:52,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:38:52,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 09:38:52,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:38:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:38:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -217285445, now seen corresponding path program 1 times [2021-12-17 09:38:52,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:38:52,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447423706] [2021-12-17 09:38:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:38:52,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:38:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:38:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:38:52,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:38:52,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447423706] [2021-12-17 09:38:52,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447423706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 09:38:52,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 09:38:52,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 09:38:52,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22420079] [2021-12-17 09:38:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 09:38:52,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 09:38:52,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:38:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 09:38:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 09:38:52,897 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:38:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:38:52,973 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-12-17 09:38:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 09:38:52,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-17 09:38:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:38:52,975 INFO L225 Difference]: With dead ends: 52 [2021-12-17 09:38:52,975 INFO L226 Difference]: Without dead ends: 33 [2021-12-17 09:38:52,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 09:38:52,979 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:38:52,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 09:38:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-17 09:38:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2021-12-17 09:38:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:38:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-17 09:38:52,983 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2021-12-17 09:38:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:38:52,983 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-17 09:38:52,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:38:52,983 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-17 09:38:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-17 09:38:52,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:38:52,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:38:52,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 09:38:52,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:38:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:38:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2020776544, now seen corresponding path program 1 times [2021-12-17 09:38:52,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:38:52,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871333275] [2021-12-17 09:38:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:38:52,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:38:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:38:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 09:38:53,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:38:53,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871333275] [2021-12-17 09:38:53,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871333275] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:38:53,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963422315] [2021-12-17 09:38:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:38:53,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:38:53,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:38:53,871 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) [2021-12-17 09:38:53,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 09:38:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:38:53,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-17 09:38:53,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:38:53,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-12-17 09:38:54,076 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-17 09:38:54,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2021-12-17 09:38:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 09:38:54,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:38:54,355 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:38:54,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 193 treesize of output 197 [2021-12-17 09:38:57,031 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-17 09:38:57,032 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 214 treesize of output 156 [2021-12-17 09:38:57,090 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-17 09:38:57,091 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 285 treesize of output 209 [2021-12-17 09:38:57,186 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-17 09:38:57,186 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 184 treesize of output 135 [2021-12-17 09:38:57,291 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-17 09:38:57,292 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 113 treesize of output 84 [2021-12-17 09:38:57,323 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-17 09:38:57,324 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 173 treesize of output 126 [2021-12-17 09:38:57,358 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-17 09:38:57,358 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 41 treesize of output 30 [2021-12-17 09:38:57,368 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-17 09:38:57,369 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 71 treesize of output 51 [2021-12-17 09:38:57,484 INFO L354 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2021-12-17 09:38:57,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 83 [2021-12-17 09:38:57,495 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-17 09:38:57,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2021-12-17 09:38:57,506 INFO L354 Elim1Store]: treesize reduction 10, result has 28.6 percent of original size [2021-12-17 09:38:57,507 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 65 treesize of output 52 [2021-12-17 09:38:57,568 INFO L354 Elim1Store]: treesize reduction 10, result has 28.6 percent of original size [2021-12-17 09:38:57,568 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 158 treesize of output 120 [2021-12-17 09:38:57,669 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-17 09:38:57,670 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 169 treesize of output 1 [2021-12-17 09:38:57,710 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-17 09:38:57,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 1 [2021-12-17 09:38:58,356 INFO L354 Elim1Store]: treesize reduction 33, result has 74.4 percent of original size [2021-12-17 09:38:58,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 402 treesize of output 311 [2021-12-17 09:38:59,135 INFO L354 Elim1Store]: treesize reduction 84, result has 1.2 percent of original size [2021-12-17 09:38:59,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 1 [2021-12-17 09:38:59,228 INFO L354 Elim1Store]: treesize reduction 33, result has 74.4 percent of original size [2021-12-17 09:38:59,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 628 treesize of output 433 [2021-12-17 09:39:00,247 INFO L354 Elim1Store]: treesize reduction 108, result has 16.3 percent of original size [2021-12-17 09:39:00,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 172 treesize of output 112 [2021-12-17 09:39:00,270 INFO L354 Elim1Store]: treesize reduction 84, result has 1.2 percent of original size [2021-12-17 09:39:00,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 1 [2021-12-17 09:39:00,305 INFO L354 Elim1Store]: treesize reduction 102, result has 20.9 percent of original size [2021-12-17 09:39:00,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 569 treesize of output 331 [2021-12-17 09:39:00,424 INFO L354 Elim1Store]: treesize reduction 102, result has 20.9 percent of original size [2021-12-17 09:39:00,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 580 treesize of output 342 [2021-12-17 09:39:00,590 INFO L354 Elim1Store]: treesize reduction 40, result has 70.8 percent of original size [2021-12-17 09:39:00,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 229 [2021-12-17 09:39:01,159 INFO L354 Elim1Store]: treesize reduction 40, result has 70.8 percent of original size [2021-12-17 09:39:01,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 680 treesize of output 456 [2021-12-17 09:39:04,417 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-17 09:39:04,436 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-12-17 09:39:04,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 1 [2021-12-17 09:39:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 09:39:04,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963422315] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:39:04,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:39:04,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2021-12-17 09:39:04,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356634878] [2021-12-17 09:39:04,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:39:04,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 09:39:04,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:39:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 09:39:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-17 09:39:04,499 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:39:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:39:04,760 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-12-17 09:39:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 09:39:04,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-17 09:39:04,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:39:04,761 INFO L225 Difference]: With dead ends: 34 [2021-12-17 09:39:04,762 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 09:39:04,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-12-17 09:39:04,763 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:39:04,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 66 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 09:39:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 09:39:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2021-12-17 09:39:04,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) [2021-12-17 09:39:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-17 09:39:04,767 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 19 [2021-12-17 09:39:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:39:04,767 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-17 09:39:04,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:39:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-17 09:39:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-17 09:39:04,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:39:04,768 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:39:04,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 09:39:04,968 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 [2021-12-17 09:39:04,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:39:04,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:39:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1709087114, now seen corresponding path program 1 times [2021-12-17 09:39:04,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:39:04,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353130626] [2021-12-17 09:39:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:39:04,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:39:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:39:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 09:39:05,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:39:05,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353130626] [2021-12-17 09:39:05,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353130626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:39:05,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147024514] [2021-12-17 09:39:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:39:05,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:39:05,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:39:05,118 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) [2021-12-17 09:39:05,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 09:39:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:39:05,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 09:39:05,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:39:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 09:39:05,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:39:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 09:39:05,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147024514] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:39:05,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:39:05,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-17 09:39:05,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923673891] [2021-12-17 09:39:05,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:39:05,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 09:39:05,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:39:05,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 09:39:05,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 09:39:05,355 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-12-17 09:39:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:39:05,472 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-12-17 09:39:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 09:39:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 23 [2021-12-17 09:39:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:39:05,473 INFO L225 Difference]: With dead ends: 76 [2021-12-17 09:39:05,473 INFO L226 Difference]: Without dead ends: 45 [2021-12-17 09:39:05,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 09:39:05,474 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:39:05,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 76 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 09:39:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-17 09:39:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2021-12-17 09:39:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:39:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-12-17 09:39:05,477 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2021-12-17 09:39:05,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:39:05,477 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-12-17 09:39:05,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-12-17 09:39:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-12-17 09:39:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-17 09:39:05,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:39:05,478 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:39:05,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 09:39:05,678 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 [2021-12-17 09:39:05,679 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:39:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:39:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1108233645, now seen corresponding path program 2 times [2021-12-17 09:39:05,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:39:05,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503313710] [2021-12-17 09:39:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:39:05,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:39:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:39:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 09:39:06,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:39:06,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503313710] [2021-12-17 09:39:06,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503313710] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:39:06,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981744061] [2021-12-17 09:39:06,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 09:39:06,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:39:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:39:06,594 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) [2021-12-17 09:39:06,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 09:39:06,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 09:39:06,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 09:39:06,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-17 09:39:06,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:39:06,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-12-17 09:39:06,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-17 09:39:06,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-17 09:39:06,821 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-17 09:39:06,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2021-12-17 09:39:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 09:39:06,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:39:09,228 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (< 2147483647 .cse0) (forall ((|ULTIMATE.start_main_~#A~0#1.offset| Int) (|ULTIMATE.start_main_~#C~0#1.offset| Int)) (let ((.cse1 (let ((.cse3 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 4))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse3 |ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse3 |ULTIMATE.start_main_~#A~0#1.offset|)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ .cse3 |c_ULTIMATE.start_main_~#B~0#1.offset|))))))) (= (select .cse1 (+ |ULTIMATE.start_main_~#C~0#1.offset| 4)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| .cse1))) (+ (select (select .cse2 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| 4)) (select (select .cse2 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 4)))))))) (or (forall ((|ULTIMATE.start_main_~#A~0#1.offset| Int) (|ULTIMATE.start_main_~#C~0#1.offset| Int)) (let ((.cse4 (let ((.cse6 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 4))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse6 |ULTIMATE.start_main_~#C~0#1.offset| (- 17179869184)) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#B~0#1.offset| (- 17179869184))) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse6 |ULTIMATE.start_main_~#A~0#1.offset| (- 17179869184)))))))) (= (select .cse4 (+ |ULTIMATE.start_main_~#C~0#1.offset| 4)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| .cse4))) (+ (select (select .cse5 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 4)) (select (select .cse5 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| 4))))))) (<= .cse0 2147483647)))) is different from false [2021-12-17 09:39:11,248 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((|ULTIMATE.start_main_~#A~0#1.offset| Int) (|ULTIMATE.start_main_~#C~0#1.offset| Int)) (let ((.cse0 (let ((.cse2 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 4))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse2 |ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse2 |ULTIMATE.start_main_~#A~0#1.offset|)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~#B~0#1.offset|))))))) (= (select .cse0 (+ |ULTIMATE.start_main_~#C~0#1.offset| 4)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| .cse0))) (+ (select (select .cse1 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 4)) (select (select .cse1 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| 4))))))) (< 2147483647 .cse3)) (or (<= .cse3 2147483647) (forall ((|ULTIMATE.start_main_~#A~0#1.offset| Int) (|ULTIMATE.start_main_~#C~0#1.offset| Int)) (let ((.cse4 (let ((.cse6 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 4))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse6 |ULTIMATE.start_main_~#C~0#1.offset| (- 17179869184)) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse6 |ULTIMATE.start_main_~#A~0#1.offset| (- 17179869184))) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#B~0#1.offset| (- 17179869184)))))))) (= (select .cse4 (+ |ULTIMATE.start_main_~#C~0#1.offset| 4)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| .cse4))) (+ (select (select .cse5 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| 4)) (select (select .cse5 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 4)))))))))) is different from false [2021-12-17 09:39:11,270 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((|ULTIMATE.start_main_~#A~0#1.offset| Int) (v_ArrVal_132 (Array Int Int)) (|ULTIMATE.start_main_~#C~0#1.offset| Int)) (let ((.cse0 (let ((.cse2 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 4))) (store v_ArrVal_132 (+ .cse2 |ULTIMATE.start_main_~#C~0#1.offset|) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| v_ArrVal_132))) (+ (select (select .cse3 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~#B~0#1.offset|)) (select (select .cse3 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse2 |ULTIMATE.start_main_~#A~0#1.offset|)))))))) (= (select .cse0 (+ |ULTIMATE.start_main_~#C~0#1.offset| 4)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| .cse0))) (+ (select (select .cse1 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| 4)) (select (select .cse1 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 4))))))) (< 2147483647 .cse4)) (or (<= .cse4 2147483647) (forall ((|ULTIMATE.start_main_~#A~0#1.offset| Int) (v_ArrVal_132 (Array Int Int)) (|ULTIMATE.start_main_~#C~0#1.offset| Int)) (let ((.cse5 (let ((.cse7 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 4))) (store v_ArrVal_132 (+ .cse7 |ULTIMATE.start_main_~#C~0#1.offset| (- 17179869184)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| v_ArrVal_132))) (+ (select (select .cse8 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#B~0#1.offset| (- 17179869184))) (select (select .cse8 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse7 |ULTIMATE.start_main_~#A~0#1.offset| (- 17179869184))))))))) (= (select .cse5 (+ |ULTIMATE.start_main_~#C~0#1.offset| 4)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| .cse5))) (+ (select (select .cse6 |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 4)) (select (select .cse6 |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| 4)))))))))) is different from false [2021-12-17 09:39:11,277 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#A~0#1.offset| Int) (v_ArrVal_132 (Array Int Int)) (|ULTIMATE.start_main_~#C~0#1.offset| Int)) (let ((.cse2 (+ |ULTIMATE.start_main_~#A~0#1.offset| 4)) (.cse3 (+ |c_ULTIMATE.start_main_~#B~0#1.offset| 4))) (let ((.cse0 (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| v_ArrVal_132))) (+ (select (select .cse4 |c_ULTIMATE.start_main_~#A~0#1.base|) .cse2) (select (select .cse4 |c_ULTIMATE.start_main_~#B~0#1.base|) .cse3))))) (= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#C~0#1.base| (store v_ArrVal_132 (+ |ULTIMATE.start_main_~#C~0#1.offset| 4) .cse0)))) (+ (select (select .cse1 |c_ULTIMATE.start_main_~#A~0#1.base|) .cse2) (select (select .cse1 |c_ULTIMATE.start_main_~#B~0#1.base|) .cse3))))))) is different from false [2021-12-17 09:39:11,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:39:11,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3150 treesize of output 3062 [2021-12-17 09:39:11,355 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:39:11,356 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 5122 treesize of output 4030 Killed by 15