./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-sorted-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/forester-heap/sll-sorted-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 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:54:17,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:54:17,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:54:17,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:54:17,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:54:17,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:54:17,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:54:17,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:54:17,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:54:17,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:54:17,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:54:17,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:54:17,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:54:17,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:54:17,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:54:17,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:54:17,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:54:17,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:54:17,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:54:17,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:54:17,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:54:17,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:54:17,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:54:17,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:54:17,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:54:17,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:54:17,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:54:17,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:54:17,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:54:17,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:54:17,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:54:17,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:54:17,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:54:17,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:54:17,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:54:17,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:54:17,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:54:17,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:54:17,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:54:17,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:54:17,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:54:17,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:54:17,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:54:17,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:54:17,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:54:17,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:54:17,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:54:17,257 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:54:17,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:54:17,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:54:17,258 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:54:17,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:54:17,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:54:17,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:54:17,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:54:17,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:54:17,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:54:17,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:54:17,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:54:17,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:54:17,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:54:17,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:54:17,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:54:17,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:54:17,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:54:17,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:54:17,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:54:17,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:54:17,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:54:17,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:54:17,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:54:17,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:54:17,263 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:54:17,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:54:17,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:54:17,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:54:17,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2021-12-15 23:54:17,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:54:17,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:54:17,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:54:17,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:54:17,461 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:54:17,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-12-15 23:54:17,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85bbc29f/4c25908aafac47dab8b8218d52dd7c89/FLAGc73ab4992 [2021-12-15 23:54:17,891 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:54:17,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-12-15 23:54:17,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85bbc29f/4c25908aafac47dab8b8218d52dd7c89/FLAGc73ab4992 [2021-12-15 23:54:17,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85bbc29f/4c25908aafac47dab8b8218d52dd7c89 [2021-12-15 23:54:17,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:54:17,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:54:17,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:54:17,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:54:17,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:54:17,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:54:17" (1/1) ... [2021-12-15 23:54:17,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d249a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:17, skipping insertion in model container [2021-12-15 23:54:17,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:54:17" (1/1) ... [2021-12-15 23:54:17,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:54:17,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:54:18,224 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/forester-heap/sll-sorted-2.i[22317,22330] [2021-12-15 23:54:18,229 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/forester-heap/sll-sorted-2.i[22452,22465] [2021-12-15 23:54:18,232 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/forester-heap/sll-sorted-2.i[22612,22625] [2021-12-15 23:54:18,235 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/forester-heap/sll-sorted-2.i[22941,22954] [2021-12-15 23:54:18,236 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/forester-heap/sll-sorted-2.i[23005,23018] [2021-12-15 23:54:18,238 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/forester-heap/sll-sorted-2.i[23136,23149] [2021-12-15 23:54:18,239 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/forester-heap/sll-sorted-2.i[23200,23213] [2021-12-15 23:54:18,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:54:18,250 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:54:18,282 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/forester-heap/sll-sorted-2.i[22317,22330] [2021-12-15 23:54:18,284 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/forester-heap/sll-sorted-2.i[22452,22465] [2021-12-15 23:54:18,290 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/forester-heap/sll-sorted-2.i[22612,22625] [2021-12-15 23:54:18,293 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/forester-heap/sll-sorted-2.i[22941,22954] [2021-12-15 23:54:18,295 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/forester-heap/sll-sorted-2.i[23005,23018] [2021-12-15 23:54:18,298 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/forester-heap/sll-sorted-2.i[23136,23149] [2021-12-15 23:54:18,298 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/forester-heap/sll-sorted-2.i[23200,23213] [2021-12-15 23:54:18,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:54:18,321 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:54:18,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18 WrapperNode [2021-12-15 23:54:18,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:54:18,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:54:18,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:54:18,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:54:18,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,372 INFO L137 Inliner]: procedures = 119, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 196 [2021-12-15 23:54:18,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:54:18,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:54:18,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:54:18,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:54:18,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:54:18,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:54:18,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:54:18,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:54:18,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (1/1) ... [2021-12-15 23:54:18,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:54:18,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:18,436 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) [2021-12-15 23:54:18,451 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 [2021-12-15 23:54:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:54:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:54:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 23:54:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:54:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 23:54:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 23:54:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:54:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:54:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:54:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:54:18,552 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:54:18,553 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:54:18,729 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:54:18,734 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:54:18,736 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-15 23:54:18,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:54:18 BoogieIcfgContainer [2021-12-15 23:54:18,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:54:18,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:54:18,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:54:18,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:54:18,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:54:17" (1/3) ... [2021-12-15 23:54:18,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3336ab7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:54:18, skipping insertion in model container [2021-12-15 23:54:18,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:54:18" (2/3) ... [2021-12-15 23:54:18,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3336ab7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:54:18, skipping insertion in model container [2021-12-15 23:54:18,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:54:18" (3/3) ... [2021-12-15 23:54:18,745 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2021-12-15 23:54:18,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:54:18,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-15 23:54:18,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:54:18,781 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 [2021-12-15 23:54:18,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-15 23:54:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 61 states have internal predecessors, (100), 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) [2021-12-15 23:54:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 23:54:18,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:18,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 23:54:18,795 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2021-12-15 23:54:18,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:18,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222262031] [2021-12-15 23:54:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:18,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:18,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:18,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222262031] [2021-12-15 23:54:18,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222262031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:18,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:54:18,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:54:18,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575162311] [2021-12-15 23:54:18,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:18,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:54:18,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:54:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:54:18,964 INFO L87 Difference]: Start difference. First operand has 62 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 61 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:18,983 INFO L93 Difference]: Finished difference Result 118 states and 190 transitions. [2021-12-15 23:54:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:54:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-15 23:54:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:18,990 INFO L225 Difference]: With dead ends: 118 [2021-12-15 23:54:18,990 INFO L226 Difference]: Without dead ends: 56 [2021-12-15 23:54:18,992 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 [2021-12-15 23:54:18,995 INFO L933 BasicCegarLoop]: 73 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, 73 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 [2021-12-15 23:54:18,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:54:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-15 23:54:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-15 23:54:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.346938775510204) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-12-15 23:54:19,023 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 6 [2021-12-15 23:54:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:19,023 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-12-15 23:54:19,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-12-15 23:54:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 23:54:19,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:19,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:19,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:54:19,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2021-12-15 23:54:19,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:19,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122922504] [2021-12-15 23:54:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:19,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:19,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:19,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122922504] [2021-12-15 23:54:19,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122922504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:19,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:54:19,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 23:54:19,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779836853] [2021-12-15 23:54:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:19,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 23:54:19,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 23:54:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:54:19,085 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:19,126 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2021-12-15 23:54:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 23:54:19,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-15 23:54:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:19,131 INFO L225 Difference]: With dead ends: 115 [2021-12-15 23:54:19,131 INFO L226 Difference]: Without dead ends: 61 [2021-12-15 23:54:19,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:54:19,133 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:19,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 86 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:54:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-15 23:54:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-12-15 23:54:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 59 states have internal predecessors, (71), 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) [2021-12-15 23:54:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-12-15 23:54:19,149 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 7 [2021-12-15 23:54:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:19,149 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-12-15 23:54:19,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-12-15 23:54:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 23:54:19,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:19,150 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:19,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:54:19,151 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:19,151 INFO L85 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2021-12-15 23:54:19,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:19,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218834739] [2021-12-15 23:54:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:19,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 23:54:19,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:19,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218834739] [2021-12-15 23:54:19,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218834739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:19,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:54:19,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:54:19,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178439001] [2021-12-15 23:54:19,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:19,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:54:19,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:54:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:54:19,237 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:19,327 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2021-12-15 23:54:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:54:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 23:54:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:19,329 INFO L225 Difference]: With dead ends: 99 [2021-12-15 23:54:19,329 INFO L226 Difference]: Without dead ends: 97 [2021-12-15 23:54:19,330 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 [2021-12-15 23:54:19,332 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 147 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:19,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 75 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:54:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-15 23:54:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2021-12-15 23:54:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 57 states have internal predecessors, (69), 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) [2021-12-15 23:54:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-12-15 23:54:19,343 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-12-15 23:54:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:19,344 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-12-15 23:54:19,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-12-15 23:54:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 23:54:19,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:19,345 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:19,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 23:54:19,345 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:19,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2064961448, now seen corresponding path program 1 times [2021-12-15 23:54:19,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:19,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220597062] [2021-12-15 23:54:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:19,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:19,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:19,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220597062] [2021-12-15 23:54:19,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220597062] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:19,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682458742] [2021-12-15 23:54:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:19,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:19,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:19,557 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) [2021-12-15 23:54:19,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 23:54:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:19,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-15 23:54:19,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:19,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 23:54:19,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:19,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:19,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-15 23:54:19,794 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:54:19,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-15 23:54:19,802 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 7 treesize of output 3 [2021-12-15 23:54:19,816 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:54:19,816 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 11 treesize of output 11 [2021-12-15 23:54:19,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:54:19,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:54:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:19,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:20,022 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_139 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_139) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2021-12-15 23:54:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:20,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682458742] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:54:20,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:54:20,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2021-12-15 23:54:20,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467303191] [2021-12-15 23:54:20,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:20,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 23:54:20,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 23:54:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=205, Unknown=1, NotChecked=28, Total=272 [2021-12-15 23:54:20,118 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:20,671 INFO L93 Difference]: Finished difference Result 150 states and 184 transitions. [2021-12-15 23:54:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 23:54:20,671 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-15 23:54:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:20,673 INFO L225 Difference]: With dead ends: 150 [2021-12-15 23:54:20,673 INFO L226 Difference]: Without dead ends: 106 [2021-12-15 23:54:20,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=531, Unknown=1, NotChecked=48, Total=702 [2021-12-15 23:54:20,674 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 105 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:20,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 573 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 300 Invalid, 0 Unknown, 130 Unchecked, 0.2s Time] [2021-12-15 23:54:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-15 23:54:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 71. [2021-12-15 23:54:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.323076923076923) internal successors, (86), 70 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2021-12-15 23:54:20,683 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 18 [2021-12-15 23:54:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:20,683 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2021-12-15 23:54:20,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2021-12-15 23:54:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 23:54:20,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:20,684 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] [2021-12-15 23:54:20,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-15 23:54:20,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:20,888 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash -644381054, now seen corresponding path program 1 times [2021-12-15 23:54:20,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:20,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915424344] [2021-12-15 23:54:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:20,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:21,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:21,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915424344] [2021-12-15 23:54:21,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915424344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:21,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936477276] [2021-12-15 23:54:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:21,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:21,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:21,053 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) [2021-12-15 23:54:21,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 23:54:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:21,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-15 23:54:21,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:21,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:21,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 14 [2021-12-15 23:54:21,204 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:54:21,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 23:54:21,215 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 5 treesize of output 3 [2021-12-15 23:54:21,225 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:54:21,225 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 11 treesize of output 11 [2021-12-15 23:54:21,234 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:21,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:21,273 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:54:21,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2021-12-15 23:54:21,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 23:54:21,279 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 19 treesize of output 11 [2021-12-15 23:54:21,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-15 23:54:21,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:54:21,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:54:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:21,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:21,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2021-12-15 23:54:21,552 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_222 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_222) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_ArrVal_221 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_221) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|))) is different from false [2021-12-15 23:54:21,590 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:21,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-15 23:54:21,594 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:21,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-12-15 23:54:21,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:21,599 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 50 treesize of output 53 [2021-12-15 23:54:21,605 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:21,605 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 65 treesize of output 68 [2021-12-15 23:54:21,611 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 37 treesize of output 35 [2021-12-15 23:54:21,614 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 35 treesize of output 33 [2021-12-15 23:54:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:21,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936477276] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:54:21,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:54:21,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2021-12-15 23:54:21,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814528719] [2021-12-15 23:54:21,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:21,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-15 23:54:21,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-15 23:54:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=175, Unknown=1, NotChecked=26, Total=240 [2021-12-15 23:54:21,708 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:21,965 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2021-12-15 23:54:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 23:54:21,966 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-15 23:54:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:21,967 INFO L225 Difference]: With dead ends: 103 [2021-12-15 23:54:21,967 INFO L226 Difference]: Without dead ends: 101 [2021-12-15 23:54:21,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=306, Unknown=1, NotChecked=36, Total=420 [2021-12-15 23:54:21,968 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 86 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:21,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 431 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 252 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2021-12-15 23:54:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-15 23:54:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2021-12-15 23:54:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 71 states have (on average 1.323943661971831) internal successors, (94), 76 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2021-12-15 23:54:21,973 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 21 [2021-12-15 23:54:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:21,973 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2021-12-15 23:54:21,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2021-12-15 23:54:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 23:54:21,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:21,974 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:21,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 23:54:22,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:22,188 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1244226061, now seen corresponding path program 1 times [2021-12-15 23:54:22,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:22,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221645480] [2021-12-15 23:54:22,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:22,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:22,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:22,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221645480] [2021-12-15 23:54:22,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221645480] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:22,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806368303] [2021-12-15 23:54:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:22,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:22,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:22,345 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) [2021-12-15 23:54:22,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 23:54:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:22,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-15 23:54:22,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:22,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 23:54:22,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:22,477 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:54:22,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:54:22,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:22,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-15 23:54:22,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:54:22,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:54:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:22,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:22,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-15 23:54:22,549 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-15 23:54:22,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:54:22,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:54:22,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:54:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:22,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:22,671 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_355 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_355) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2021-12-15 23:54:22,685 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_51| Int) (v_ArrVal_355 (Array Int Int)) (v_ArrVal_354 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_51|))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_354) |v_ULTIMATE.start_main_~x~0#1.base_51| v_ArrVal_355) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0))) is different from false [2021-12-15 23:54:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-15 23:54:22,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806368303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:54:22,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:54:22,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2021-12-15 23:54:22,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441822155] [2021-12-15 23:54:22,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:22,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-15 23:54:22,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-15 23:54:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=136, Unknown=2, NotChecked=50, Total=240 [2021-12-15 23:54:22,762 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-12-15 23:54:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:23,057 INFO L93 Difference]: Finished difference Result 178 states and 212 transitions. [2021-12-15 23:54:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 23:54:23,058 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-15 23:54:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:23,058 INFO L225 Difference]: With dead ends: 178 [2021-12-15 23:54:23,058 INFO L226 Difference]: Without dead ends: 163 [2021-12-15 23:54:23,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=242, Unknown=2, NotChecked=70, Total=420 [2021-12-15 23:54:23,059 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 255 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:23,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 455 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 262 Invalid, 0 Unknown, 188 Unchecked, 0.2s Time] [2021-12-15 23:54:23,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-15 23:54:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 101. [2021-12-15 23:54:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 100 states have internal predecessors, (127), 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) [2021-12-15 23:54:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2021-12-15 23:54:23,065 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 22 [2021-12-15 23:54:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:23,065 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2021-12-15 23:54:23,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-12-15 23:54:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2021-12-15 23:54:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 23:54:23,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:23,066 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:23,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 23:54:23,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:23,282 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:23,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:23,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2029850711, now seen corresponding path program 1 times [2021-12-15 23:54:23,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:23,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655510792] [2021-12-15 23:54:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:23,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:23,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:23,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655510792] [2021-12-15 23:54:23,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655510792] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:23,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229157264] [2021-12-15 23:54:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:23,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:23,501 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) [2021-12-15 23:54:23,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 23:54:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:23,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-15 23:54:23,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:23,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:23,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:23,627 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:54:23,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 23:54:23,632 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 5 treesize of output 3 [2021-12-15 23:54:23,646 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:54:23,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:54:23,653 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:23,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:23,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:23,699 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 [2021-12-15 23:54:23,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:23,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:23,766 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-15 23:54:23,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 81 [2021-12-15 23:54:23,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:23,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-15 23:54:23,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-12-15 23:54:23,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:23,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-15 23:54:23,792 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-15 23:54:23,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-15 23:54:23,796 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 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-15 23:54:23,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-15 23:54:23,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-15 23:54:23,858 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 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-15 23:54:23,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 54 [2021-12-15 23:54:24,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:54:24,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 17 [2021-12-15 23:54:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:24,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:24,103 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_504 (Array Int Int)) (v_ArrVal_503 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_504) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_502) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_503) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)))) is different from false [2021-12-15 23:54:24,170 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-15 23:54:24,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 54 [2021-12-15 23:54:24,177 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:24,177 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 92 treesize of output 95 [2021-12-15 23:54:24,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:24,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 73 [2021-12-15 23:54:24,191 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 31 treesize of output 17 [2021-12-15 23:54:24,238 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 6 treesize of output 4 [2021-12-15 23:54:24,242 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 6 treesize of output 4 [2021-12-15 23:54:24,275 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 6 treesize of output 4 [2021-12-15 23:54:24,279 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 6 treesize of output 4 [2021-12-15 23:54:24,324 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 6 treesize of output 4 [2021-12-15 23:54:24,336 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 6 treesize of output 4 [2021-12-15 23:54:24,348 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_12 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_58| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_58|))) (not (= (select v_arrayElimArr_12 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (and (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_501 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_501) |v_ULTIMATE.start_main_~x~0#1.base_58| v_ArrVal_502) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_501 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_501) |v_ULTIMATE.start_main_~x~0#1.base_58| v_ArrVal_502) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.base_58|))) (forall ((v_ArrVal_503 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_12) |v_ULTIMATE.start_main_~x~0#1.base_58| v_ArrVal_503) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2021-12-15 23:54:24,364 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 6 treesize of output 4 [2021-12-15 23:54:24,368 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 6 treesize of output 4 [2021-12-15 23:54:24,408 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 6 treesize of output 4 [2021-12-15 23:54:24,415 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 6 treesize of output 4 [2021-12-15 23:54:24,440 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:24,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 66 [2021-12-15 23:54:24,445 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:24,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 58 [2021-12-15 23:54:24,452 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:24,452 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 200 treesize of output 195 [2021-12-15 23:54:24,460 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:24,461 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 234 treesize of output 237 [2021-12-15 23:54:24,471 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:24,471 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 243 treesize of output 247 [2021-12-15 23:54:24,479 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 204 treesize of output 200 [2021-12-15 23:54:24,484 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 200 treesize of output 192 [2021-12-15 23:54:24,489 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 192 treesize of output 188 [2021-12-15 23:54:24,493 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 188 treesize of output 184 [2021-12-15 23:54:24,498 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 184 treesize of output 182 [2021-12-15 23:54:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-15 23:54:24,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229157264] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:54:24,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:54:24,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2021-12-15 23:54:24,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106993941] [2021-12-15 23:54:24,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:24,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-15 23:54:24,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-15 23:54:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=254, Unknown=3, NotChecked=66, Total=380 [2021-12-15 23:54:24,757 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:25,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:25,245 INFO L93 Difference]: Finished difference Result 250 states and 310 transitions. [2021-12-15 23:54:25,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 23:54:25,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-15 23:54:25,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:25,246 INFO L225 Difference]: With dead ends: 250 [2021-12-15 23:54:25,246 INFO L226 Difference]: Without dead ends: 197 [2021-12-15 23:54:25,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=451, Unknown=3, NotChecked=90, Total=650 [2021-12-15 23:54:25,247 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 152 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:25,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 599 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 385 Invalid, 0 Unknown, 262 Unchecked, 0.2s Time] [2021-12-15 23:54:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-15 23:54:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 115. [2021-12-15 23:54:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 114 states have internal predecessors, (145), 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) [2021-12-15 23:54:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2021-12-15 23:54:25,254 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 25 [2021-12-15 23:54:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:25,254 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2021-12-15 23:54:25,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2021-12-15 23:54:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 23:54:25,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:25,255 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:25,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-15 23:54:25,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:25,471 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1220504085, now seen corresponding path program 1 times [2021-12-15 23:54:25,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:25,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205584841] [2021-12-15 23:54:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:25,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-15 23:54:25,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205584841] [2021-12-15 23:54:25,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205584841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:25,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:54:25,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:54:25,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415513412] [2021-12-15 23:54:25,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:25,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:54:25,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:25,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:54:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:54:25,516 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:25,572 INFO L93 Difference]: Finished difference Result 184 states and 235 transitions. [2021-12-15 23:54:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 23:54:25,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-15 23:54:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:25,573 INFO L225 Difference]: With dead ends: 184 [2021-12-15 23:54:25,573 INFO L226 Difference]: Without dead ends: 130 [2021-12-15 23:54:25,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:54:25,574 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:25,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 146 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:54:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-15 23:54:25,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2021-12-15 23:54:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 120 states have internal predecessors, (151), 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) [2021-12-15 23:54:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2021-12-15 23:54:25,578 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 25 [2021-12-15 23:54:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:25,578 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2021-12-15 23:54:25,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2021-12-15 23:54:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 23:54:25,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:25,579 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:25,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 23:54:25,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash 836449433, now seen corresponding path program 1 times [2021-12-15 23:54:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:25,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955983373] [2021-12-15 23:54:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:25,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:25,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:25,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955983373] [2021-12-15 23:54:25,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955983373] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:25,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668828231] [2021-12-15 23:54:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:25,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:25,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:54:25,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 23:54:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:25,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-15 23:54:25,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:25,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:25,949 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:54:25,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:54:25,956 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:25,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:25,966 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:25,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:26,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:26,005 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 [2021-12-15 23:54:26,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:26,077 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-15 23:54:26,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 65 [2021-12-15 23:54:26,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:26,089 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-15 23:54:26,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 79 [2021-12-15 23:54:26,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:26,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:26,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2021-12-15 23:54:26,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:26,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-15 23:54:26,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:26,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-15 23:54:26,113 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-15 23:54:26,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-15 23:54:26,180 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-15 23:54:26,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 67 [2021-12-15 23:54:26,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-12-15 23:54:26,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-15 23:54:26,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:54:26,387 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:54:26,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2021-12-15 23:54:26,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:54:26,417 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,417 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 17 treesize of output 10 [2021-12-15 23:54:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:26,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:26,482 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int)) (v_ArrVal_709 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_711) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_709) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_710) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 1)) is different from false [2021-12-15 23:54:26,508 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int)) (v_ArrVal_704 (Array Int Int)) (v_ArrVal_708 Int) (v_ArrVal_709 (Array Int Int)) (v_ArrVal_699 Int)) (or (not (= 0 (select |c_#valid| v_ArrVal_699))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_708)) v_ArrVal_699 v_ArrVal_711) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_699)) v_ArrVal_699 v_ArrVal_709) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_704) v_ArrVal_699 v_ArrVal_710) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 1))) is different from false [2021-12-15 23:54:26,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2021-12-15 23:54:26,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:54:26,536 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,536 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 57 [2021-12-15 23:54:26,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,547 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 100 treesize of output 103 [2021-12-15 23:54:26,552 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 37 treesize of output 21 [2021-12-15 23:54:26,591 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 24 treesize of output 20 [2021-12-15 23:54:26,606 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_19 (Array Int Int))) (or (and (forall ((v_ArrVal_709 (Array Int Int))) (not (let ((.cse0 (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_19) .cse0 v_ArrVal_709) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse0)))) (forall ((v_ArrVal_709 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_19) (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_709) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_710 (Array Int Int)) (v_ArrVal_704 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_704) (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_710) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (not (= 0 (select |c_#valid| (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|)))))) is different from false [2021-12-15 23:54:26,616 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 24 treesize of output 20 [2021-12-15 23:54:26,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2021-12-15 23:54:26,645 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 66 [2021-12-15 23:54:26,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 114 [2021-12-15 23:54:26,660 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,660 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 290 treesize of output 285 [2021-12-15 23:54:26,666 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:26,667 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 296 treesize of output 252 [2021-12-15 23:54:26,672 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 204 treesize of output 200 [2021-12-15 23:54:26,676 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 200 treesize of output 192 [2021-12-15 23:54:26,680 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 192 treesize of output 188 [2021-12-15 23:54:26,685 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 188 treesize of output 186 [2021-12-15 23:54:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-15 23:54:26,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668828231] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:54:26,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:54:26,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2021-12-15 23:54:26,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815156542] [2021-12-15 23:54:26,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:26,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-15 23:54:26,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-15 23:54:26,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=286, Unknown=3, NotChecked=108, Total=462 [2021-12-15 23:54:26,960 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 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) [2021-12-15 23:54:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:27,637 INFO L93 Difference]: Finished difference Result 347 states and 430 transitions. [2021-12-15 23:54:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-15 23:54:27,638 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 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 25 [2021-12-15 23:54:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:27,639 INFO L225 Difference]: With dead ends: 347 [2021-12-15 23:54:27,639 INFO L226 Difference]: Without dead ends: 247 [2021-12-15 23:54:27,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=772, Unknown=5, NotChecked=180, Total=1122 [2021-12-15 23:54:27,640 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 225 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 498 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:27,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 825 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 505 Invalid, 0 Unknown, 498 Unchecked, 0.3s Time] [2021-12-15 23:54:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-15 23:54:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 132. [2021-12-15 23:54:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 126 states have (on average 1.3174603174603174) internal successors, (166), 131 states have internal predecessors, (166), 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) [2021-12-15 23:54:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 166 transitions. [2021-12-15 23:54:27,645 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 166 transitions. Word has length 25 [2021-12-15 23:54:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:27,645 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 166 transitions. [2021-12-15 23:54:27,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 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) [2021-12-15 23:54:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 166 transitions. [2021-12-15 23:54:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 23:54:27,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:27,646 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, 1, 1, 1, 1] [2021-12-15 23:54:27,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 23:54:27,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:27,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2046348832, now seen corresponding path program 1 times [2021-12-15 23:54:27,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:27,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54953955] [2021-12-15 23:54:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:27,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:28,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:28,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54953955] [2021-12-15 23:54:28,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54953955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:28,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194276782] [2021-12-15 23:54:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:28,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:28,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:28,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:54:28,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 23:54:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:28,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-15 23:54:28,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:28,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:28,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 23:54:28,162 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:54:28,162 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 11 treesize of output 11 [2021-12-15 23:54:28,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:28,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-15 23:54:28,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:54:28,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:54:28,272 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:54:28,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-15 23:54:28,277 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 7 treesize of output 3 [2021-12-15 23:54:28,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:54:28,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-15 23:54:28,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:54:28,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-15 23:54:28,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:28,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:28,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2021-12-15 23:54:28,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:28,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2021-12-15 23:54:28,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:54:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:28,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:28,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-12-15 23:54:28,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-12-15 23:54:28,473 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_855 (Array Int Int)) (v_ArrVal_854 Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_10| Int)) (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_10|) (= |c_ULTIMATE.start_main_~x~0#1.offset| 0)) (= (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_10| v_ArrVal_855))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_854))) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0))) is different from false [2021-12-15 23:54:28,641 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_855 (Array Int Int)) (v_ArrVal_854 Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_10| Int)) (or (= (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_10| v_ArrVal_855) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_854) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (and (= |c_ULTIMATE.start_main_~head~0#1.offset| 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_10|)))) is different from false [2021-12-15 23:54:28,687 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_855 (Array Int Int)) (v_ArrVal_848 (Array Int Int)) (v_ArrVal_854 Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_10| Int)) (or (= (select (store (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_848) |v_ULTIMATE.start_main_~tmp~0#1.base_10| v_ArrVal_855) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_854) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (and (= |c_ULTIMATE.start_main_~head~0#1.offset| 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_10|)))) is different from false [2021-12-15 23:54:28,760 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_72| Int) (v_ArrVal_855 (Array Int Int)) (v_ArrVal_848 (Array Int Int)) (v_ArrVal_847 Int) (v_ArrVal_854 Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_10| Int)) (or (and (= |c_ULTIMATE.start_main_~head~0#1.offset| 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_10|)) (= (select (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_847)) |v_ULTIMATE.start_main_~x~0#1.base_72| v_ArrVal_848) |v_ULTIMATE.start_main_~tmp~0#1.base_10| v_ArrVal_855) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_854) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_72|))))) is different from false [2021-12-15 23:54:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-15 23:54:28,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194276782] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:54:28,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:54:28,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 19 [2021-12-15 23:54:28,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358423865] [2021-12-15 23:54:28,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:28,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-15 23:54:28,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-15 23:54:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=168, Unknown=4, NotChecked=116, Total=342 [2021-12-15 23:54:28,828 INFO L87 Difference]: Start difference. First operand 132 states and 166 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:28,885 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (forall ((v_ArrVal_855 (Array Int Int)) (v_ArrVal_854 Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_10| Int)) (or (= (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_10| v_ArrVal_855) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_854) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (and (= |c_ULTIMATE.start_main_~head~0#1.offset| 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_10|))))) is different from false [2021-12-15 23:54:28,887 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (forall ((v_ArrVal_855 (Array Int Int)) (v_ArrVal_854 Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_10| Int)) (or (= (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_10| v_ArrVal_855) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_854) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (and (= |c_ULTIMATE.start_main_~head~0#1.offset| 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_10|))))) is different from false [2021-12-15 23:54:28,898 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_main_~x~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (forall ((v_ArrVal_855 (Array Int Int)) (v_ArrVal_854 Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_10| Int)) (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_10|) (= |c_ULTIMATE.start_main_~x~0#1.offset| 0)) (= (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_10| v_ArrVal_855))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_854))) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)))) is different from false [2021-12-15 23:54:29,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:29,212 INFO L93 Difference]: Finished difference Result 202 states and 245 transitions. [2021-12-15 23:54:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 23:54:29,212 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-15 23:54:29,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:29,213 INFO L225 Difference]: With dead ends: 202 [2021-12-15 23:54:29,213 INFO L226 Difference]: Without dead ends: 187 [2021-12-15 23:54:29,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=385, Unknown=7, NotChecked=336, Total=870 [2021-12-15 23:54:29,214 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 143 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:29,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 440 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 209 Invalid, 0 Unknown, 225 Unchecked, 0.1s Time] [2021-12-15 23:54:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-15 23:54:29,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 143. [2021-12-15 23:54:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 142 states have internal predecessors, (182), 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) [2021-12-15 23:54:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 182 transitions. [2021-12-15 23:54:29,219 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 182 transitions. Word has length 27 [2021-12-15 23:54:29,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:29,219 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 182 transitions. [2021-12-15 23:54:29,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:29,219 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 182 transitions. [2021-12-15 23:54:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 23:54:29,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:29,220 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, 1, 1, 1, 1] [2021-12-15 23:54:29,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 23:54:29,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:29,436 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:29,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1237002206, now seen corresponding path program 1 times [2021-12-15 23:54:29,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:29,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682233881] [2021-12-15 23:54:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:29,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:29,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:29,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682233881] [2021-12-15 23:54:29,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682233881] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:29,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524666127] [2021-12-15 23:54:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:29,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:29,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:29,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:54:29,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 23:54:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:29,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-15 23:54:29,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:29,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:29,678 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:54:29,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:54:29,687 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:29,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:29,752 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:54:29,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-12-15 23:54:29,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:29,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-15 23:54:29,923 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:54:29,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 23:54:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:29,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:29,964 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_976 (Array Int Int)) (|v_ULTIMATE.start_main_~tmp~0#1.base_12| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~tmp~0#1.base_12|))) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmp~0#1.base_12| v_ArrVal_976) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) 0)))) is different from false [2021-12-15 23:54:30,027 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_976 (Array Int Int)) (|v_ULTIMATE.start_main_~tmp~0#1.base_12| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~tmp~0#1.base_12|))) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmp~0#1.base_12| v_ArrVal_976) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)))) is different from false [2021-12-15 23:54:30,053 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_974 (Array Int Int)) (v_ArrVal_976 (Array Int Int)) (|v_ULTIMATE.start_main_~tmp~0#1.base_12| Int)) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_974) |v_ULTIMATE.start_main_~tmp~0#1.base_12| v_ArrVal_976) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~tmp~0#1.base_12|))))) (= 0 |c_ULTIMATE.start_main_~marked~0#1|)) is different from false [2021-12-15 23:54:30,063 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_974 (Array Int Int)) (v_ArrVal_976 (Array Int Int)) (|v_ULTIMATE.start_main_~tmp~0#1.base_12| Int)) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_974) |v_ULTIMATE.start_main_~tmp~0#1.base_12| v_ArrVal_976) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~tmp~0#1.base_12|))))) is different from false [2021-12-15 23:54:30,073 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:30,073 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-15 23:54:30,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:30,079 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 185 treesize of output 144 [2021-12-15 23:54:30,083 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 114 treesize of output 106 [2021-12-15 23:54:30,086 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 106 treesize of output 102 [2021-12-15 23:54:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-15 23:54:30,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524666127] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:54:30,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:54:30,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2021-12-15 23:54:30,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674224375] [2021-12-15 23:54:30,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:30,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-15 23:54:30,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-15 23:54:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=234, Unknown=4, NotChecked=132, Total=420 [2021-12-15 23:54:30,295 INFO L87 Difference]: Start difference. First operand 143 states and 182 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:30,836 INFO L93 Difference]: Finished difference Result 351 states and 422 transitions. [2021-12-15 23:54:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-15 23:54:30,837 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-15 23:54:30,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:30,838 INFO L225 Difference]: With dead ends: 351 [2021-12-15 23:54:30,838 INFO L226 Difference]: Without dead ends: 264 [2021-12-15 23:54:30,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=564, Unknown=4, NotChecked=212, Total=930 [2021-12-15 23:54:30,839 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 496 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 680 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:30,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 691 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 453 Invalid, 0 Unknown, 680 Unchecked, 0.3s Time] [2021-12-15 23:54:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-15 23:54:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 137. [2021-12-15 23:54:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 131 states have (on average 1.282442748091603) internal successors, (168), 136 states have internal predecessors, (168), 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) [2021-12-15 23:54:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2021-12-15 23:54:30,844 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 27 [2021-12-15 23:54:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:30,845 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2021-12-15 23:54:30,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:54:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2021-12-15 23:54:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 23:54:30,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:30,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:30,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 23:54:31,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:31,048 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash 485990957, now seen corresponding path program 1 times [2021-12-15 23:54:31,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:31,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851740592] [2021-12-15 23:54:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:31,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:31,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:31,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851740592] [2021-12-15 23:54:31,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851740592] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:31,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361050669] [2021-12-15 23:54:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:31,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:31,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:31,163 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:54:31,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 23:54:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:31,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-15 23:54:31,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:31,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:31,316 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-15 23:54:31,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2021-12-15 23:54:31,341 INFO L354 Elim1Store]: treesize reduction 30, result has 43.4 percent of original size [2021-12-15 23:54:31,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 68 [2021-12-15 23:54:31,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-15 23:54:31,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-15 23:54:31,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2021-12-15 23:54:31,373 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 5 treesize of output 3 [2021-12-15 23:54:31,382 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:54:31,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-15 23:54:31,405 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 5 treesize of output 3 [2021-12-15 23:54:31,431 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-15 23:54:31,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-12-15 23:54:31,441 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:54:31,442 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 11 treesize of output 11 [2021-12-15 23:54:31,488 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 23:54:31,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2021-12-15 23:54:31,491 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 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-15 23:54:31,725 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-15 23:54:31,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 58 [2021-12-15 23:54:31,731 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-15 23:54:31,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 26 [2021-12-15 23:54:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:31,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:35,624 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:35,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 7507 treesize of output 7092 [2021-12-15 23:54:35,873 INFO L354 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2021-12-15 23:54:35,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 7947 treesize of output 6891 [2021-12-15 23:54:35,990 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:35,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 9429 treesize of output 9193 [2021-12-15 23:54:36,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:36,111 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 16723 treesize of output 16247 [2021-12-15 23:54:37,114 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-15 23:54:37,115 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-15 23:54:37,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-15 23:54:37,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407812926] [2021-12-15 23:54:37,115 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:37,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 23:54:37,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 23:54:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=166, Unknown=2, NotChecked=0, Total=210 [2021-12-15 23:54:37,117 INFO L87 Difference]: Start difference. First operand 137 states and 168 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2021-12-15 23:54:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:37,330 INFO L93 Difference]: Finished difference Result 189 states and 228 transitions. [2021-12-15 23:54:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 23:54:37,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) Word has length 27 [2021-12-15 23:54:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:37,331 INFO L225 Difference]: With dead ends: 189 [2021-12-15 23:54:37,331 INFO L226 Difference]: Without dead ends: 153 [2021-12-15 23:54:37,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=69, Invalid=309, Unknown=2, NotChecked=0, Total=380 [2021-12-15 23:54:37,332 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 44 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:37,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 283 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:54:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-15 23:54:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2021-12-15 23:54:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 139 states have internal predecessors, (171), 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) [2021-12-15 23:54:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 171 transitions. [2021-12-15 23:54:37,338 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 171 transitions. Word has length 27 [2021-12-15 23:54:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:37,340 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 171 transitions. [2021-12-15 23:54:37,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2021-12-15 23:54:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 171 transitions. [2021-12-15 23:54:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 23:54:37,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:37,342 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, 1, 1, 1, 1] [2021-12-15 23:54:37,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-15 23:54:37,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-15 23:54:37,544 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1345284254, now seen corresponding path program 1 times [2021-12-15 23:54:37,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275843164] [2021-12-15 23:54:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:37,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 23:54:37,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275843164] [2021-12-15 23:54:37,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275843164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:37,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:54:37,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:54:37,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467094549] [2021-12-15 23:54:37,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:37,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:54:37,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:54:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:54:37,581 INFO L87 Difference]: Start difference. First operand 140 states and 171 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2021-12-15 23:54:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:37,633 INFO L93 Difference]: Finished difference Result 176 states and 212 transitions. [2021-12-15 23:54:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:54:37,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) Word has length 27 [2021-12-15 23:54:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:37,634 INFO L225 Difference]: With dead ends: 176 [2021-12-15 23:54:37,634 INFO L226 Difference]: Without dead ends: 145 [2021-12-15 23:54:37,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:54:37,635 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 10 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:37,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 173 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:54:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-15 23:54:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2021-12-15 23:54:37,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 136 states have (on average 1.25) internal successors, (170), 141 states have internal predecessors, (170), 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) [2021-12-15 23:54:37,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 170 transitions. [2021-12-15 23:54:37,640 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 170 transitions. Word has length 27 [2021-12-15 23:54:37,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:37,640 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 170 transitions. [2021-12-15 23:54:37,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2021-12-15 23:54:37,641 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 170 transitions. [2021-12-15 23:54:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 23:54:37,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:37,641 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, 1, 1, 1, 1] [2021-12-15 23:54:37,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 23:54:37,641 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1938565792, now seen corresponding path program 1 times [2021-12-15 23:54:37,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:37,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072649987] [2021-12-15 23:54:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:37,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:37,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:37,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072649987] [2021-12-15 23:54:37,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072649987] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:37,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256321821] [2021-12-15 23:54:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:37,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:37,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:37,721 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:54:37,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 23:54:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:37,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-15 23:54:37,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:37,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-12-15 23:54:37,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-12-15 23:54:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 23:54:38,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:54:38,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256321821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:38,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 23:54:38,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-15 23:54:38,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384971560] [2021-12-15 23:54:38,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:38,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 23:54:38,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:38,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 23:54:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-15 23:54:38,013 INFO L87 Difference]: Start difference. First operand 142 states and 170 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-12-15 23:54:38,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:38,166 INFO L93 Difference]: Finished difference Result 196 states and 228 transitions. [2021-12-15 23:54:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 23:54:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) Word has length 27 [2021-12-15 23:54:38,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:38,167 INFO L225 Difference]: With dead ends: 196 [2021-12-15 23:54:38,167 INFO L226 Difference]: Without dead ends: 165 [2021-12-15 23:54:38,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-12-15 23:54:38,167 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 138 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:38,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 172 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:54:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-15 23:54:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 138. [2021-12-15 23:54:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.2272727272727273) internal successors, (162), 137 states have internal predecessors, (162), 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) [2021-12-15 23:54:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2021-12-15 23:54:38,174 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 27 [2021-12-15 23:54:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:38,174 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2021-12-15 23:54:38,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-12-15 23:54:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2021-12-15 23:54:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 23:54:38,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:38,175 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, 1, 1, 1, 1, 1] [2021-12-15 23:54:38,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 23:54:38,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-15 23:54:38,387 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash 987204315, now seen corresponding path program 1 times [2021-12-15 23:54:38,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:38,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969315382] [2021-12-15 23:54:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:38,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 23:54:38,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:38,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969315382] [2021-12-15 23:54:38,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969315382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:38,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:54:38,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:54:38,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764372750] [2021-12-15 23:54:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:38,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:54:38,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:54:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:54:38,431 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) [2021-12-15 23:54:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:38,492 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2021-12-15 23:54:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:54:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) Word has length 28 [2021-12-15 23:54:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:38,493 INFO L225 Difference]: With dead ends: 156 [2021-12-15 23:54:38,493 INFO L226 Difference]: Without dead ends: 154 [2021-12-15 23:54:38,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:54:38,494 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 9 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:38,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 188 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:54:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-15 23:54:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2021-12-15 23:54:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 140 states have (on average 1.2285714285714286) internal successors, (172), 145 states have internal predecessors, (172), 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) [2021-12-15 23:54:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2021-12-15 23:54:38,500 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 28 [2021-12-15 23:54:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:38,500 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2021-12-15 23:54:38,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) [2021-12-15 23:54:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2021-12-15 23:54:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 23:54:38,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:38,501 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, 1, 1, 1, 1, 1] [2021-12-15 23:54:38,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 23:54:38,502 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:38,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1044462617, now seen corresponding path program 1 times [2021-12-15 23:54:38,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:38,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015645054] [2021-12-15 23:54:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:38,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 23:54:38,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:38,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015645054] [2021-12-15 23:54:38,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015645054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:54:38,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:54:38,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:54:38,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198517667] [2021-12-15 23:54:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:54:38,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:54:38,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:54:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:54:38,552 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) [2021-12-15 23:54:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:38,608 INFO L93 Difference]: Finished difference Result 205 states and 236 transitions. [2021-12-15 23:54:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:54:38,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) Word has length 28 [2021-12-15 23:54:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:38,610 INFO L225 Difference]: With dead ends: 205 [2021-12-15 23:54:38,610 INFO L226 Difference]: Without dead ends: 167 [2021-12-15 23:54:38,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:54:38,611 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 110 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:38,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 115 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:54:38,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-15 23:54:38,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 144. [2021-12-15 23:54:38,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.210144927536232) internal successors, (167), 143 states have internal predecessors, (167), 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) [2021-12-15 23:54:38,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2021-12-15 23:54:38,617 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 28 [2021-12-15 23:54:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:38,617 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2021-12-15 23:54:38,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) [2021-12-15 23:54:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2021-12-15 23:54:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-15 23:54:38,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:38,618 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:38,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 23:54:38,618 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:38,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1949280172, now seen corresponding path program 2 times [2021-12-15 23:54:38,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:38,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052367006] [2021-12-15 23:54:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:38,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:54:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:38,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:54:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052367006] [2021-12-15 23:54:38,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052367006] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:54:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468245662] [2021-12-15 23:54:38,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 23:54:38,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:54:38,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:54:38,938 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:54:38,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 23:54:39,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 23:54:39,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 23:54:39,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-15 23:54:39,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:54:39,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:54:39,102 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:54:39,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:54:39,107 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:39,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:39,124 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:54:39,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:39,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:39,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:39,179 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 [2021-12-15 23:54:39,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:39,235 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-15 23:54:39,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 72 [2021-12-15 23:54:39,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-15 23:54:39,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:39,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:39,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2021-12-15 23:54:39,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:39,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 23:54:39,288 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-12-15 23:54:39,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-12-15 23:54:39,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:54:39,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-15 23:54:39,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 23:54:39,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:39,439 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-15 23:54:39,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 89 [2021-12-15 23:54:39,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:39,454 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-15 23:54:39,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 25 [2021-12-15 23:54:39,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:54:39,485 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:54:39,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 29 [2021-12-15 23:54:39,503 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-15 23:54:39,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-15 23:54:39,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-15 23:54:39,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-15 23:54:39,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-15 23:54:39,598 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 5 treesize of output 3 [2021-12-15 23:54:39,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2021-12-15 23:54:39,621 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 5 treesize of output 3 [2021-12-15 23:54:39,761 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 0 case distinctions, treesize of input 46 treesize of output 40 [2021-12-15 23:54:39,765 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 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-15 23:54:39,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 23:54:39,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:54:39,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 17 [2021-12-15 23:54:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:54:40,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:54:40,204 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1601 (Array Int Int)) (v_ArrVal_1600 Int) (v_ArrVal_1603 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) .cse2 v_ArrVal_1600)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) .cse2 v_ArrVal_1603)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1601) .cse0) (+ .cse1 4))) (and (= .cse1 0) (= .cse0 0)))))) is different from false [2021-12-15 23:54:40,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~x~0#1.offset| Int) (v_ArrVal_1601 (Array Int Int)) (v_ArrVal_1588 (Array Int Int)) (v_ArrVal_1600 Int) (v_ArrVal_1593 (Array Int Int)) (v_ArrVal_1591 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_91| Int) (v_ArrVal_1603 Int)) (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset| 0)))) (store .cse2 |v_ULTIMATE.start_main_~x~0#1.base_91| (store (store (select .cse2 |v_ULTIMATE.start_main_~x~0#1.base_91|) 0 0) 4 v_ArrVal_1600))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1593) |v_ULTIMATE.start_main_~x~0#1.base_91| (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1591) |v_ULTIMATE.start_main_~x~0#1.base_91|) 0 0) 4 v_ArrVal_1603)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_91|))) (= 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1588) |v_ULTIMATE.start_main_~x~0#1.base_91| v_ArrVal_1601) .cse0) (+ .cse1 4))) (and (= .cse1 0) (= .cse0 0))))) is different from false [2021-12-15 23:54:40,427 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:40,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 113 [2021-12-15 23:54:42,303 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1601 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int) (v_ArrVal_1588 (Array Int Int)) (v_arrayElimArr_36 (Array Int Int)) (v_ArrVal_1576 (Array Int Int)) (v_ArrVal_1583 (Array Int Int)) (v_ArrVal_1593 (Array Int Int)) (v_ArrVal_1591 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_92| Int) (v_ArrVal_1581 Int) (v_ArrVal_1582 Int) (v_ArrVal_1600 Int) (|v_ULTIMATE.start_main_~x~0#1.base_91| Int) (v_ArrVal_1603 Int)) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1583))) (store (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_92| v_ArrVal_1593) |v_ULTIMATE.start_main_~x~0#1.base_91| (store (store (select (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_92| v_ArrVal_1591) |v_ULTIMATE.start_main_~x~0#1.base_91|) 0 0) 4 v_ArrVal_1603))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse1 (select (select (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1576) |v_ULTIMATE.start_main_~x~0#1.base_92| v_arrayElimArr_36))) (store .cse2 |v_ULTIMATE.start_main_~x~0#1.base_91| (store (store (select .cse2 |v_ULTIMATE.start_main_~x~0#1.base_91|) 0 0) 4 v_ArrVal_1600))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (not (= (select v_arrayElimArr_36 |v_ULTIMATE.start_main_~x~0#1.offset_91|) 0)) (and (= .cse0 0) (= .cse1 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_92|))) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_92| v_ArrVal_1582) |v_ULTIMATE.start_main_~x~0#1.base_91|))) (= 0 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_1581)) |v_ULTIMATE.start_main_~x~0#1.base_92| v_ArrVal_1588) |v_ULTIMATE.start_main_~x~0#1.base_91| v_ArrVal_1601) .cse0) (+ .cse1 4)))))) is different from false [2021-12-15 23:54:43,290 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-15 23:54:43,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 88 [2021-12-15 23:54:43,307 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:43,307 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 788 treesize of output 731 [2021-12-15 23:54:43,318 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 329 treesize of output 267 [2021-12-15 23:54:43,323 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 596 treesize of output 472 [2021-12-15 23:54:51,651 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_92| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_91| Int) (v_arrayElimArr_36 (Array Int Int)) (v_ArrVal_1582 Int) (v_ArrVal_1576 (Array Int Int)) (v_ArrVal_1583 (Array Int Int)) (v_ArrVal_1600 Int) (v_ArrVal_1593 (Array Int Int)) (v_ArrVal_1591 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_91| Int) (v_ArrVal_1603 Int)) (let ((.cse1 (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1576) |v_ULTIMATE.start_main_~x~0#1.base_92| v_arrayElimArr_36))) (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_91| (store (store (select .cse3 |v_ULTIMATE.start_main_~x~0#1.base_91|) 0 0) 4 v_ArrVal_1600))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1583))) (store (store .cse2 |v_ULTIMATE.start_main_~x~0#1.base_92| v_ArrVal_1593) |v_ULTIMATE.start_main_~x~0#1.base_91| (store (store (select (store .cse2 |v_ULTIMATE.start_main_~x~0#1.base_92| v_ArrVal_1591) |v_ULTIMATE.start_main_~x~0#1.base_91|) 0 0) 4 v_ArrVal_1603))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (not (= (select v_arrayElimArr_36 |v_ULTIMATE.start_main_~x~0#1.offset_91|) 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_92|))) (and (= |c_ULTIMATE.start_main_~x~0#1.base| .cse0) (= |c_ULTIMATE.start_main_~x~0#1.offset| .cse1) (not (= .cse0 |v_ULTIMATE.start_main_~x~0#1.base_92|)) (not (= .cse0 |v_ULTIMATE.start_main_~x~0#1.base_91|))) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_92| v_ArrVal_1582) |v_ULTIMATE.start_main_~x~0#1.base_91|))) (and (= .cse1 0) (= .cse0 0))))) is different from false [2021-12-15 23:54:57,072 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:57,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 281 treesize of output 225 [2021-12-15 23:54:57,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:57,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 269 treesize of output 245 [2021-12-15 23:54:57,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:57,099 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 7564 treesize of output 6758 [2021-12-15 23:54:57,123 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 18477 treesize of output 17965 [2021-12-15 23:54:57,405 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 23533 treesize of output 23261 [2021-12-15 23:54:57,755 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 23037 treesize of output 23005 [2021-12-15 23:54:57,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:54:57,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:57,872 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 24189 treesize of output 24163 [2021-12-15 23:54:57,979 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 24133 treesize of output 24117 [2021-12-15 23:54:58,102 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:54:58,103 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 25387 treesize of output 25297 [2021-12-15 23:54:58,551 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-15 23:54:58,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-15 23:54:58,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-15 23:54:58,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871104865] [2021-12-15 23:54:58,551 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-15 23:54:58,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 23:54:58,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:54:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 23:54:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=521, Unknown=4, NotChecked=196, Total=812 [2021-12-15 23:54:58,552 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2021-12-15 23:54:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:54:59,547 INFO L93 Difference]: Finished difference Result 241 states and 280 transitions. [2021-12-15 23:54:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-15 23:54:59,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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 29 [2021-12-15 23:54:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:54:59,548 INFO L225 Difference]: With dead ends: 241 [2021-12-15 23:54:59,548 INFO L226 Difference]: Without dead ends: 239 [2021-12-15 23:54:59,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=1640, Unknown=4, NotChecked=348, Total=2256 [2021-12-15 23:54:59,549 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 213 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 23:54:59,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 471 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 23:54:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-15 23:54:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 148. [2021-12-15 23:54:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.2112676056338028) internal successors, (172), 147 states have internal predecessors, (172), 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) [2021-12-15 23:54:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2021-12-15 23:54:59,556 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 29 [2021-12-15 23:54:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:54:59,556 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2021-12-15 23:54:59,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2021-12-15 23:54:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2021-12-15 23:54:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-15 23:54:59,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:54:59,557 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:54:59,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-15 23:54:59,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-15 23:54:59,774 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:54:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:54:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1955841147, now seen corresponding path program 1 times [2021-12-15 23:54:59,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:54:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404155649] [2021-12-15 23:54:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:54:59,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:54:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:55:00,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:00,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404155649] [2021-12-15 23:55:00,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404155649] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:00,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139978897] [2021-12-15 23:55:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:00,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:00,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:55:00,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 23:55:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:00,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-15 23:55:00,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:00,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-15 23:55:00,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-15 23:55:00,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-15 23:55:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-15 23:55:00,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-15 23:55:00,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139978897] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:55:00,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:55:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2021-12-15 23:55:00,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509141984] [2021-12-15 23:55:00,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-15 23:55:00,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-15 23:55:00,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-15 23:55:00,309 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:55:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:01,391 INFO L93 Difference]: Finished difference Result 273 states and 321 transitions. [2021-12-15 23:55:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-15 23:55:01,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-15 23:55:01,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:01,392 INFO L225 Difference]: With dead ends: 273 [2021-12-15 23:55:01,392 INFO L226 Difference]: Without dead ends: 217 [2021-12-15 23:55:01,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=187, Invalid=1373, Unknown=0, NotChecked=0, Total=1560 [2021-12-15 23:55:01,393 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 154 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:01,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 629 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 23:55:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-15 23:55:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 162. [2021-12-15 23:55:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 161 states have internal predecessors, (190), 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) [2021-12-15 23:55:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 190 transitions. [2021-12-15 23:55:01,400 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 190 transitions. Word has length 29 [2021-12-15 23:55:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:01,400 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 190 transitions. [2021-12-15 23:55:01,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:55:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 190 transitions. [2021-12-15 23:55:01,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-15 23:55:01,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:01,401 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:01,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-15 23:55:01,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-15 23:55:01,608 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:55:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1172045616, now seen corresponding path program 2 times [2021-12-15 23:55:01,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:01,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932591899] [2021-12-15 23:55:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:01,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:55:01,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:01,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932591899] [2021-12-15 23:55:01,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932591899] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:01,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702277411] [2021-12-15 23:55:01,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 23:55:01,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:01,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:01,891 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:55:01,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-15 23:55:02,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 23:55:02,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 23:55:02,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-15 23:55:02,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:02,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:55:02,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:55:02,090 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:55:02,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 23:55:02,095 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 5 treesize of output 3 [2021-12-15 23:55:02,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:55:02,107 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:55:02,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 23:55:02,111 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 5 treesize of output 3 [2021-12-15 23:55:02,128 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:55:02,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:55:02,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:55:02,185 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 [2021-12-15 23:55:02,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:55:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,262 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-15 23:55:02,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 79 [2021-12-15 23:55:02,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-12-15 23:55:02,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-15 23:55:02,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,278 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 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-15 23:55:02,298 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-12-15 23:55:02,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-12-15 23:55:02,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 23:55:02,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2021-12-15 23:55:02,401 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 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-15 23:55:02,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 23:55:02,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2021-12-15 23:55:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2021-12-15 23:55:02,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-15 23:55:02,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:02,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2021-12-15 23:55:02,500 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-12-15 23:55:02,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2021-12-15 23:55:02,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2021-12-15 23:55:02,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 23:55:02,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2021-12-15 23:55:02,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2021-12-15 23:55:02,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-12-15 23:55:02,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:55:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:55:02,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:03,035 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1933 (Array Int Int)) (v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1931 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1933) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1931) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 1)) (= 0 |c_ULTIMATE.start_main_~marked~0#1|)) is different from false [2021-12-15 23:55:03,098 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:03,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2021-12-15 23:55:03,130 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1933 (Array Int Int)) (v_ArrVal_1932 (Array Int Int)) (v_arrayElimArr_45 (Array Int Int)) (v_ArrVal_1931 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_102| Int) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1925 (Array Int Int))) (or (not (= (select v_arrayElimArr_45 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_102|))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1925) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1933) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_45) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1931) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 1))) (= 0 |c_ULTIMATE.start_main_~marked~0#1|)) is different from false [2021-12-15 23:55:03,232 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1933 (Array Int Int)) (v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1915 Int) (v_arrayElimArr_45 (Array Int Int)) (v_ArrVal_1931 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_102| Int) (|v_ULTIMATE.start_main_~x~0#1.base_103| Int) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1925 (Array Int Int))) (or (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_1915)) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1925) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1933) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| 0)) |v_ULTIMATE.start_main_~x~0#1.base_103| v_arrayElimArr_45) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1931) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 1) (not (= (select v_arrayElimArr_45 0) 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_103|))) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_103| 1) |v_ULTIMATE.start_main_~x~0#1.base_102|))))) (= 0 |c_ULTIMATE.start_main_~marked~0#1|)) is different from false [2021-12-15 23:55:03,320 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-15 23:55:03,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 63 [2021-12-15 23:55:03,332 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:03,332 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 225 treesize of output 228 [2021-12-15 23:55:03,339 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:03,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 224 treesize of output 218 [2021-12-15 23:55:03,344 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 93 treesize of output 76 [2021-12-15 23:55:03,349 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 154 treesize of output 120 [2021-12-15 23:55:03,488 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 6 treesize of output 4 [2021-12-15 23:55:03,503 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 6 treesize of output 4 [2021-12-15 23:55:03,510 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 6 treesize of output 4 [2021-12-15 23:55:03,733 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 6 treesize of output 4 [2021-12-15 23:55:03,745 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 6 treesize of output 4 [2021-12-15 23:55:03,752 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 6 treesize of output 4 [2021-12-15 23:55:04,006 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 6 treesize of output 4 [2021-12-15 23:55:04,032 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 6 treesize of output 4 [2021-12-15 23:55:04,036 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 6 treesize of output 4 [2021-12-15 23:55:04,075 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_arrayElimArr_45 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_102| Int) (v_arrayElimArr_47 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_103| Int)) (or (not (= (select v_arrayElimArr_45 0) 0)) (not (= (select v_arrayElimArr_47 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (and (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (not (= (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.base_102|))) (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (not (= (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.base_103|))) (or (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.base_102|)) (forall ((v_ArrVal_1931 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_47) |v_ULTIMATE.start_main_~x~0#1.base_103| v_arrayElimArr_45) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1931) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (let ((.cse0 (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (= .cse0 |v_ULTIMATE.start_main_~x~0#1.base_102|) (= |c_ULTIMATE.start_main_~x~0#1.base| .cse0))))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_103|))) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_103| 1) |v_ULTIMATE.start_main_~x~0#1.base_102|))))) (= 0 |c_ULTIMATE.start_main_~marked~0#1|)) is different from false [2021-12-15 23:55:04,128 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 6 treesize of output 4 [2021-12-15 23:55:04,140 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 6 treesize of output 4 [2021-12-15 23:55:04,147 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 6 treesize of output 4 [2021-12-15 23:55:04,331 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 6 treesize of output 4 [2021-12-15 23:55:04,363 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 6 treesize of output 4 [2021-12-15 23:55:04,417 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 6 treesize of output 4 [2021-12-15 23:55:04,450 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_45 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_102| Int) (v_arrayElimArr_47 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_103| Int)) (or (not (= (select v_arrayElimArr_45 0) 0)) (not (= (select v_arrayElimArr_47 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (and (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (not (= (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.base_102|))) (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (not (= (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.base_103|))) (or (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.base_102|)) (forall ((v_ArrVal_1931 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_47) |v_ULTIMATE.start_main_~x~0#1.base_103| v_arrayElimArr_45) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1931) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (let ((.cse0 (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1917) |v_ULTIMATE.start_main_~x~0#1.base_103| v_ArrVal_1927) |v_ULTIMATE.start_main_~x~0#1.base_102| v_ArrVal_1932) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (= .cse0 |v_ULTIMATE.start_main_~x~0#1.base_102|) (= |c_ULTIMATE.start_main_~x~0#1.base| .cse0))))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_103|))) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_103| 1) |v_ULTIMATE.start_main_~x~0#1.base_102|))))) is different from false [2021-12-15 23:55:04,470 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:04,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 149 treesize of output 150 [2021-12-15 23:55:04,476 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:04,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 118 [2021-12-15 23:55:04,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:04,484 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 1067 treesize of output 1042 [2021-12-15 23:55:04,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:04,495 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 1048 treesize of output 1038 [2021-12-15 23:55:04,514 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:04,514 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 3925 treesize of output 3836 [2021-12-15 23:55:04,544 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:04,545 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 3842 treesize of output 3816 [2021-12-15 23:55:04,588 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 3761 treesize of output 3729 [2021-12-15 23:55:04,610 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 3729 treesize of output 3721 [2021-12-15 23:55:04,632 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 3721 treesize of output 3705 [2021-12-15 23:55:04,665 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 3705 treesize of output 3641 [2021-12-15 23:55:04,687 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 3641 treesize of output 3609 [2021-12-15 23:55:04,709 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 3609 treesize of output 3545 [2021-12-15 23:55:04,730 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 3545 treesize of output 3529 [2021-12-15 23:55:04,752 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 3529 treesize of output 3497 [2021-12-15 23:55:04,773 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 3497 treesize of output 3481 [2021-12-15 23:55:04,795 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 3481 treesize of output 3449 [2021-12-15 23:55:04,816 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 3449 treesize of output 3385 [2021-12-15 23:55:04,838 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 3385 treesize of output 3369 [2021-12-15 23:55:04,873 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 3369 treesize of output 3361 [2021-12-15 23:55:04,900 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-15 23:55:04,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-15 23:55:04,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-12-15 23:55:04,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196987593] [2021-12-15 23:55:04,900 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:04,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 23:55:04,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 23:55:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=462, Unknown=7, NotChecked=240, Total=812 [2021-12-15 23:55:04,901 INFO L87 Difference]: Start difference. First operand 162 states and 190 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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) [2021-12-15 23:55:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:05,407 INFO L93 Difference]: Finished difference Result 245 states and 288 transitions. [2021-12-15 23:55:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-15 23:55:05,408 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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 29 [2021-12-15 23:55:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:05,408 INFO L225 Difference]: With dead ends: 245 [2021-12-15 23:55:05,408 INFO L226 Difference]: Without dead ends: 243 [2021-12-15 23:55:05,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=936, Unknown=7, NotChecked=340, Total=1482 [2021-12-15 23:55:05,410 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 136 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:05,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 458 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 23:55:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-15 23:55:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 162. [2021-12-15 23:55:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 161 states have internal predecessors, (190), 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) [2021-12-15 23:55:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 190 transitions. [2021-12-15 23:55:05,417 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 190 transitions. Word has length 29 [2021-12-15 23:55:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:05,418 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 190 transitions. [2021-12-15 23:55:05,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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) [2021-12-15 23:55:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 190 transitions. [2021-12-15 23:55:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-15 23:55:05,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:05,418 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:05,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-15 23:55:05,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:05,635 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:55:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash -484292801, now seen corresponding path program 1 times [2021-12-15 23:55:05,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:05,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016014829] [2021-12-15 23:55:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:05,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 23:55:05,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:05,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016014829] [2021-12-15 23:55:05,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016014829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:05,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:05,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:55:05,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853957972] [2021-12-15 23:55:05,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:05,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:55:05,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:55:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:55:05,671 INFO L87 Difference]: Start difference. First operand 162 states and 190 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2021-12-15 23:55:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:05,727 INFO L93 Difference]: Finished difference Result 163 states and 191 transitions. [2021-12-15 23:55:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 23:55:05,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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 30 [2021-12-15 23:55:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:05,728 INFO L225 Difference]: With dead ends: 163 [2021-12-15 23:55:05,728 INFO L226 Difference]: Without dead ends: 156 [2021-12-15 23:55:05,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:55:05,728 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 25 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:05,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 148 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:55:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-15 23:55:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-12-15 23:55:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 151 states have (on average 1.205298013245033) internal successors, (182), 154 states have internal predecessors, (182), 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) [2021-12-15 23:55:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2021-12-15 23:55:05,734 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 30 [2021-12-15 23:55:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:05,734 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2021-12-15 23:55:05,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2021-12-15 23:55:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2021-12-15 23:55:05,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 23:55:05,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:05,735 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:05,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 23:55:05,735 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:55:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1660964169, now seen corresponding path program 1 times [2021-12-15 23:55:05,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:05,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781165047] [2021-12-15 23:55:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:05,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:55:05,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:05,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781165047] [2021-12-15 23:55:05,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781165047] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:05,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214724088] [2021-12-15 23:55:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:05,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:05,901 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:55:05,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-15 23:55:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:06,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-15 23:55:06,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:06,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:55:06,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 23:55:06,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:06,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-15 23:55:06,112 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:55:06,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-15 23:55:06,116 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 7 treesize of output 3 [2021-12-15 23:55:06,129 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:55:06,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:55:06,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:55:06,181 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:55:06,181 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 11 treesize of output 11 [2021-12-15 23:55:06,190 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:55:06,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-12-15 23:55:06,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:55:06,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:55:06,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-15 23:55:06,334 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:55:06,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-15 23:55:06,338 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 7 treesize of output 3 [2021-12-15 23:55:06,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:55:06,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-15 23:55:06,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:06,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:06,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2021-12-15 23:55:06,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:06,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2021-12-15 23:55:06,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:55:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:55:06,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:06,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-12-15 23:55:06,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-12-15 23:55:06,501 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_14| Int) (v_ArrVal_2195 (Array Int Int)) (v_ArrVal_2193 Int)) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_14| v_ArrVal_2195))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_2193))) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (and (= |c_ULTIMATE.start_main_~x~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_14|) (= |c_ULTIMATE.start_main_~x~0#1.offset| 0)))) is different from false [2021-12-15 23:55:06,660 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_14| Int) (v_ArrVal_2195 (Array Int Int)) (v_ArrVal_2193 Int)) (or (and (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_14|) (= |c_ULTIMATE.start_main_~head~0#1.offset| 0)) (= (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_14| v_ArrVal_2195) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_2193) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0))) is different from false [2021-12-15 23:55:06,711 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_14| Int) (v_ArrVal_2187 (Array Int Int)) (v_ArrVal_2195 (Array Int Int)) (v_ArrVal_2193 Int)) (or (and (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_14|) (= |c_ULTIMATE.start_main_~head~0#1.offset| 0)) (= (select (store (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2187) |v_ULTIMATE.start_main_~tmp~0#1.base_14| v_ArrVal_2195) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_2193) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0))) is different from false [2021-12-15 23:55:06,790 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_14| Int) (|v_ULTIMATE.start_main_~x~0#1.base_109| Int) (v_ArrVal_2187 (Array Int Int)) (v_ArrVal_2185 (Array Int Int)) (v_ArrVal_2195 (Array Int Int)) (v_ArrVal_2193 Int)) (or (and (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_14|) (= |c_ULTIMATE.start_main_~head~0#1.offset| 0)) (= (select (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2185) |v_ULTIMATE.start_main_~x~0#1.base_109| v_ArrVal_2187) |v_ULTIMATE.start_main_~tmp~0#1.base_14| v_ArrVal_2195) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_2193) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_109|))))) is different from false [2021-12-15 23:55:06,907 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_14| Int) (|v_ULTIMATE.start_main_~x~0#1.base_109| Int) (v_ArrVal_2187 (Array Int Int)) (v_ArrVal_2185 (Array Int Int)) (v_ArrVal_2195 (Array Int Int)) (v_ArrVal_2193 Int)) (or (and (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_14|) (= |c_ULTIMATE.start_main_~head~0#1.offset| 0)) (= (select (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2185) |v_ULTIMATE.start_main_~x~0#1.base_109| v_ArrVal_2187) |v_ULTIMATE.start_main_~tmp~0#1.base_14| v_ArrVal_2195) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_2193) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_109|))))) (= 0 |c_ULTIMATE.start_main_~marked~0#1|)) is different from false [2021-12-15 23:55:07,090 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2183 Int) (|v_ULTIMATE.start_main_~x~0#1.base_110| Int) (|v_ULTIMATE.start_main_~tmp~0#1.base_14| Int) (|v_ULTIMATE.start_main_~x~0#1.base_109| Int) (v_ArrVal_2187 (Array Int Int)) (v_ArrVal_2185 (Array Int Int)) (v_ArrVal_2195 (Array Int Int)) (v_ArrVal_2193 Int) (v_ArrVal_2182 Int)) (or (and (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_14|) (= |c_ULTIMATE.start_main_~head~0#1.offset| 0)) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_110| v_ArrVal_2182) |v_ULTIMATE.start_main_~x~0#1.base_109|))) (= (select (store (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_2183)) |v_ULTIMATE.start_main_~x~0#1.base_110| v_ArrVal_2185) |v_ULTIMATE.start_main_~x~0#1.base_109| v_ArrVal_2187) |v_ULTIMATE.start_main_~tmp~0#1.base_14| v_ArrVal_2195) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_2193) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_110|))))) is different from false [2021-12-15 23:55:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-15 23:55:07,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214724088] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:55:07,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:55:07,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 26 [2021-12-15 23:55:07,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384977563] [2021-12-15 23:55:07,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:07,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-15 23:55:07,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-15 23:55:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=307, Unknown=6, NotChecked=246, Total=650 [2021-12-15 23:55:07,233 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 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) [2021-12-15 23:55:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:07,551 INFO L93 Difference]: Finished difference Result 215 states and 247 transitions. [2021-12-15 23:55:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 23:55:07,551 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 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 31 [2021-12-15 23:55:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:07,552 INFO L225 Difference]: With dead ends: 215 [2021-12-15 23:55:07,552 INFO L226 Difference]: Without dead ends: 197 [2021-12-15 23:55:07,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=424, Unknown=6, NotChecked=294, Total=870 [2021-12-15 23:55:07,556 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 253 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 458 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:07,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 524 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 302 Invalid, 0 Unknown, 458 Unchecked, 0.2s Time] [2021-12-15 23:55:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-15 23:55:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 153. [2021-12-15 23:55:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 152 states have internal predecessors, (180), 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) [2021-12-15 23:55:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2021-12-15 23:55:07,563 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 31 [2021-12-15 23:55:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:07,563 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2021-12-15 23:55:07,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 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) [2021-12-15 23:55:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2021-12-15 23:55:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 23:55:07,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:07,564 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:07,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-15 23:55:07,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-15 23:55:07,781 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 23:55:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash 871375620, now seen corresponding path program 1 times [2021-12-15 23:55:07,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:07,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541540161] [2021-12-15 23:55:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:07,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:55:07,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:07,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541540161] [2021-12-15 23:55:07,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541540161] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:07,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378335620] [2021-12-15 23:55:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:07,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:07,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:07,996 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:55:07,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-15 23:55:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:08,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-15 23:55:08,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:08,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:55:08,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:55:08,181 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:55:08,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 23:55:08,186 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 5 treesize of output 3 [2021-12-15 23:55:08,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:55:08,199 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:55:08,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 23:55:08,203 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 5 treesize of output 3 [2021-12-15 23:55:08,220 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:55:08,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:55:08,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:55:08,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:55:08,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:55:08,319 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-15 23:55:08,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 55 [2021-12-15 23:55:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:08,327 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-15 23:55:08,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 65 [2021-12-15 23:55:08,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 42 [2021-12-15 23:55:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:08,346 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 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-15 23:55:08,356 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-15 23:55:08,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-15 23:55:08,423 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-15 23:55:08,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 72 [2021-12-15 23:55:08,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:08,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-15 23:55:08,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-15 23:55:08,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:55:08,852 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-15 23:55:08,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 47 [2021-12-15 23:55:08,857 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-15 23:55:08,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-15 23:55:08,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:55:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:55:08,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:08,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 113 [2021-12-15 23:55:08,968 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2336 (Array Int Int)) (v_ArrVal_2335 (Array Int Int))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2336))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2335) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_2336 (Array Int Int)) (v_ArrVal_2335 (Array Int Int))) (= (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2335))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2336) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) |c_ULTIMATE.start_main_~x~0#1.offset|))) is different from false [2021-12-15 23:55:08,994 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2326 Int)) (or (and (forall ((v_ArrVal_2336 (Array Int Int)) (v_ArrVal_2335 (Array Int Int))) (= (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| 0)) v_ArrVal_2326 v_ArrVal_2335))) (select (select .cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_2326)) v_ArrVal_2326 v_ArrVal_2336) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) 0)) (forall ((v_ArrVal_2336 (Array Int Int)) (v_ArrVal_2335 (Array Int Int))) (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_2326)) v_ArrVal_2326 v_ArrVal_2336))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| 0)) v_ArrVal_2326 v_ArrVal_2335) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) v_ArrVal_2326))) (not (= 0 (select |c_#valid| v_ArrVal_2326))))) is different from false [2021-12-15 23:55:09,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:09,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 83 [2021-12-15 23:55:09,021 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:09,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 80 [2021-12-15 23:55:09,124 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_55 (Array Int Int)) (v_arrayElimArr_56 (Array Int Int))) (or (not (= 0 (select |c_#valid| (select v_arrayElimArr_55 |c_ULTIMATE.start_main_~x~0#1.offset|)))) (not (= (select v_arrayElimArr_56 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (and (forall ((v_prenex_118 (Array Int Int)) (v_prenex_117 (Array Int Int))) (= (let ((.cse1 (select v_arrayElimArr_55 |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_56) .cse1 v_prenex_118))) (select (select .cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_55) .cse1 v_prenex_117) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) 0)) (forall ((v_ArrVal_2336 (Array Int Int)) (v_ArrVal_2335 (Array Int Int))) (let ((.cse3 (select v_arrayElimArr_55 |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_55) .cse3 v_ArrVal_2336))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_56) .cse3 v_ArrVal_2335) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) .cse3)))))) is different from false [2021-12-15 23:55:09,203 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:09,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 114 [2021-12-15 23:55:09,207 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:09,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 98 [2021-12-15 23:55:09,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:09,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 1482 treesize of output 1463 [2021-12-15 23:55:09,718 INFO L354 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2021-12-15 23:55:09,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 4529 treesize of output 4616 [2021-12-15 23:55:09,838 INFO L354 Elim1Store]: treesize reduction 8, result has 91.8 percent of original size [2021-12-15 23:55:09,839 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 4627 treesize of output 3961 [2021-12-15 23:55:09,952 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:09,952 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 3967 treesize of output 3879 [2021-12-15 23:55:10,113 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 3052 treesize of output 2804 [2021-12-15 23:55:10,217 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:10,218 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 2864 treesize of output 2716 [2021-12-15 23:55:10,411 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:10,411 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 2650 treesize of output 2592 [2021-12-15 23:55:10,507 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 395 treesize of output 357