./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array6_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array6_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 10:50:29,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:50:29,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:50:29,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:50:29,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:50:29,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:50:29,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:50:29,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:50:29,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:50:29,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:50:29,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:50:29,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:50:29,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:50:29,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:50:29,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:50:29,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:50:29,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:50:29,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:50:29,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:50:29,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:50:29,184 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:50:29,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:50:29,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:50:29,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:50:29,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:50:29,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:50:29,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:50:29,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:50:29,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:50:29,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:50:29,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:50:29,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:50:29,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:50:29,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:50:29,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:50:29,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:50:29,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:50:29,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:50:29,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:50:29,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:50:29,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:50:29,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:50:29,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:50:29,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:50:29,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:50:29,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:50:29,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:50:29,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:50:29,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:50:29,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:50:29,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:50:29,233 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:50:29,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:50:29,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:50:29,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:50:29,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:50:29,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:50:29,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:50:29,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:50:29,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:50:29,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:50:29,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:50:29,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:50:29,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:50:29,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:50:29,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:50:29,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:50:29,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:50:29,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:50:29,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:50:29,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:50:29,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:50:29,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:50:29,238 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:50:29,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:50:29,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:50:29,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2022-07-13 10:50:29,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:50:29,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:50:29,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:50:29,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:50:29,458 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:50:29,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-13 10:50:29,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae954d9f/6b80d83619324082ad78534ce8b65a06/FLAGc5c0a0586 [2022-07-13 10:50:29,915 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:50:29,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-13 10:50:29,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae954d9f/6b80d83619324082ad78534ce8b65a06/FLAGc5c0a0586 [2022-07-13 10:50:29,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae954d9f/6b80d83619324082ad78534ce8b65a06 [2022-07-13 10:50:29,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:50:29,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:50:29,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:50:29,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:50:29,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:50:29,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:50:29" (1/1) ... [2022-07-13 10:50:29,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45642642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:29, skipping insertion in model container [2022-07-13 10:50:29,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:50:29" (1/1) ... [2022-07-13 10:50:29,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:50:29,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:50:30,055 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/array-patterns/array6_pattern.c[1356,1369] [2022-07-13 10:50:30,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:50:30,080 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:50:30,090 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/array-patterns/array6_pattern.c[1356,1369] [2022-07-13 10:50:30,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:50:30,114 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:50:30,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30 WrapperNode [2022-07-13 10:50:30,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:50:30,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:50:30,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:50:30,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:50:30,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,144 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-07-13 10:50:30,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:50:30,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:50:30,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:50:30,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:50:30,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:50:30,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:50:30,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:50:30,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:50:30,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (1/1) ... [2022-07-13 10:50:30,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:50:30,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:30,207 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) [2022-07-13 10:50:30,227 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 [2022-07-13 10:50:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:50:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 10:50:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 10:50:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:50:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:50:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:50:30,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:50:30,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:50:30,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:50:30,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:50:30,297 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:50:30,298 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:50:30,401 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:50:30,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:50:30,406 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 10:50:30,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:50:30 BoogieIcfgContainer [2022-07-13 10:50:30,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:50:30,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:50:30,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:50:30,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:50:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:50:29" (1/3) ... [2022-07-13 10:50:30,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6dc047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:50:30, skipping insertion in model container [2022-07-13 10:50:30,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:30" (2/3) ... [2022-07-13 10:50:30,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6dc047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:50:30, skipping insertion in model container [2022-07-13 10:50:30,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:50:30" (3/3) ... [2022-07-13 10:50:30,424 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-07-13 10:50:30,436 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:50:30,437 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:50:30,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:50:30,490 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@500b6686, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f35791d [2022-07-13 10:50:30,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:50:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 10:50:30,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:30,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:30,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-07-13 10:50:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:30,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262813498] [2022-07-13 10:50:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:50:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262813498] [2022-07-13 10:50:30,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262813498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:30,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:30,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:50:30,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189349847] [2022-07-13 10:50:30,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:30,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:50:30,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:50:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:50:30,670 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:50:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:30,686 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-07-13 10:50:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:50:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-13 10:50:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:30,696 INFO L225 Difference]: With dead ends: 47 [2022-07-13 10:50:30,697 INFO L226 Difference]: Without dead ends: 21 [2022-07-13 10:50:30,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:50:30,705 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:30,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-13 10:50:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-13 10:50:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-13 10:50:30,738 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-07-13 10:50:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:30,739 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-13 10:50:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:50:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-13 10:50:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 10:50:30,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:30,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:30,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:50:30,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-07-13 10:50:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717364716] [2022-07-13 10:50:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:30,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:30,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:50:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:50:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:30,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:30,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717364716] [2022-07-13 10:50:30,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717364716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:30,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:30,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:50:30,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542464236] [2022-07-13 10:50:30,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:30,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:50:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:50:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:50:30,896 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:30,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:30,915 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-13 10:50:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:50:30,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-13 10:50:30,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:30,916 INFO L225 Difference]: With dead ends: 26 [2022-07-13 10:50:30,916 INFO L226 Difference]: Without dead ends: 22 [2022-07-13 10:50:30,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:50:30,917 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:30,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-13 10:50:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-13 10:50:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-13 10:50:30,921 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-07-13 10:50:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:30,922 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-13 10:50:30,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-13 10:50:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 10:50:30,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:30,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:30,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 10:50:30,924 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:30,925 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-07-13 10:50:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:30,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889193539] [2022-07-13 10:50:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:30,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:50:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:50:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:31,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:31,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889193539] [2022-07-13 10:50:31,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889193539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:31,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:31,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:50:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711862820] [2022-07-13 10:50:31,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:31,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:50:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:50:31,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:50:31,025 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:31,056 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-13 10:50:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:50:31,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-07-13 10:50:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:31,058 INFO L225 Difference]: With dead ends: 41 [2022-07-13 10:50:31,058 INFO L226 Difference]: Without dead ends: 25 [2022-07-13 10:50:31,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:50:31,059 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:31,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-13 10:50:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-13 10:50:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-13 10:50:31,068 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-07-13 10:50:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:31,068 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-13 10:50:31,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-13 10:50:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 10:50:31,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:31,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 10:50:31,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-07-13 10:50:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:31,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283855386] [2022-07-13 10:50:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:31,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:31,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:31,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428818142] [2022-07-13 10:50:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:31,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:31,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:31,100 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) [2022-07-13 10:50:31,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:50:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:31,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:50:31,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 10:50:31,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:50:31,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:31,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283855386] [2022-07-13 10:50:31,356 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:31,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428818142] [2022-07-13 10:50:31,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428818142] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:31,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:31,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-13 10:50:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733352114] [2022-07-13 10:50:31,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:31,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 10:50:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 10:50:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-13 10:50:31,358 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:31,551 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-07-13 10:50:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 10:50:31,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-07-13 10:50:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:31,553 INFO L225 Difference]: With dead ends: 71 [2022-07-13 10:50:31,553 INFO L226 Difference]: Without dead ends: 43 [2022-07-13 10:50:31,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-07-13 10:50:31,555 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:31,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:50:31,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-13 10:50:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-07-13 10:50:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-13 10:50:31,560 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2022-07-13 10:50:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:31,560 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-13 10:50:31,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-13 10:50:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 10:50:31,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:31,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:31,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:31,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:31,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1559224519, now seen corresponding path program 2 times [2022-07-13 10:50:31,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:31,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821832906] [2022-07-13 10:50:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:31,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:31,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489250705] [2022-07-13 10:50:31,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:50:31,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:31,805 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) [2022-07-13 10:50:31,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:50:31,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:50:31,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:31,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 10:50:31,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:31,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:31,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:31,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821832906] [2022-07-13 10:50:31,992 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:31,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489250705] [2022-07-13 10:50:31,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489250705] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:31,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:31,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-13 10:50:31,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053745191] [2022-07-13 10:50:31,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:31,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 10:50:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:31,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 10:50:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:50:31,996 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:32,119 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-13 10:50:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 10:50:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-07-13 10:50:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:32,121 INFO L225 Difference]: With dead ends: 39 [2022-07-13 10:50:32,121 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 10:50:32,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-07-13 10:50:32,124 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:32,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:50:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 10:50:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-13 10:50:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-13 10:50:32,139 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2022-07-13 10:50:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:32,139 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-13 10:50:32,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-13 10:50:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 10:50:32,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:32,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:32,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:32,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:32,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:32,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 3 times [2022-07-13 10:50:32,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794841280] [2022-07-13 10:50:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:32,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:32,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686277517] [2022-07-13 10:50:32,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:50:32,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:32,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:32,368 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) [2022-07-13 10:50:32,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:50:32,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 10:50:32,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:32,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-13 10:50:32,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:32,500 INFO L390 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 10 treesize of output 8 [2022-07-13 10:50:32,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,525 INFO L390 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 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-13 10:50:32,529 INFO L390 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 16 treesize of output 15 [2022-07-13 10:50:32,533 INFO L390 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 33 treesize of output 32 [2022-07-13 10:50:32,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,609 INFO L390 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 0 case distinctions, treesize of input 40 treesize of output 39 [2022-07-13 10:50:32,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,615 INFO L390 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 18 treesize of output 22 [2022-07-13 10:50:32,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2022-07-13 10:50:32,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,706 INFO L390 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 0 case distinctions, treesize of input 53 treesize of output 50 [2022-07-13 10:50:32,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,730 INFO L356 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-07-13 10:50:32,730 INFO L390 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 25 treesize of output 34 [2022-07-13 10:50:32,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:32,746 INFO L356 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-07-13 10:50:32,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-07-13 10:50:33,244 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-13 10:50:33,244 INFO L390 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 334 treesize of output 217 [2022-07-13 10:50:33,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,254 INFO L390 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 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-13 10:50:33,262 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-13 10:50:33,309 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-13 10:50:33,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 219 [2022-07-13 10:50:33,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,344 INFO L356 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-07-13 10:50:33,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 160 [2022-07-13 10:50:33,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,397 INFO L356 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-07-13 10:50:33,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 82 [2022-07-13 10:50:33,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 38 treesize of output 11 [2022-07-13 10:50:33,597 INFO L356 Elim1Store]: treesize reduction 41, result has 19.6 percent of original size [2022-07-13 10:50:33,597 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 165 treesize of output 142 [2022-07-13 10:50:33,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:33,631 INFO L356 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-07-13 10:50:33,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 64 [2022-07-13 10:50:35,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:35,993 INFO L356 Elim1Store]: treesize reduction 32, result has 86.7 percent of original size [2022-07-13 10:50:35,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 12 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 20 case distinctions, treesize of input 142 treesize of output 256 [2022-07-13 10:50:36,026 INFO L390 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 89 treesize of output 69 [2022-07-13 10:50:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:38,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:42,464 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int)) (|v_ULTIMATE.start_main_~count~0#1_34| Int) (v_ArrVal_213 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~count~0#1_34| 2)) (= (let ((.cse4 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_213) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse5 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse4)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse1 (* |v_ULTIMATE.start_main_~count~0#1_34| 4))) (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse2 (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_34| 1) c_~ARR_SIZE~0))) is different from false [2022-07-13 10:50:42,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:42,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794841280] [2022-07-13 10:50:42,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:42,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686277517] [2022-07-13 10:50:42,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686277517] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:50:42,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:50:42,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-13 10:50:42,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244594678] [2022-07-13 10:50:42,599 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:42,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 10:50:42,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 10:50:42,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=784, Unknown=3, NotChecked=58, Total=992 [2022-07-13 10:50:42,600 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:42,829 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-07-13 10:50:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 10:50:42,830 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-13 10:50:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:42,831 INFO L225 Difference]: With dead ends: 59 [2022-07-13 10:50:42,831 INFO L226 Difference]: Without dead ends: 55 [2022-07-13 10:50:42,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=176, Invalid=1015, Unknown=3, NotChecked=66, Total=1260 [2022-07-13 10:50:42,832 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:42,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 204 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 108 Unchecked, 0.1s Time] [2022-07-13 10:50:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-13 10:50:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2022-07-13 10:50:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-07-13 10:50:42,841 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2022-07-13 10:50:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:42,843 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-07-13 10:50:42,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:50:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-07-13 10:50:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 10:50:42,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:42,845 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:42,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:43,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:43,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 4 times [2022-07-13 10:50:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:43,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005957980] [2022-07-13 10:50:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:43,081 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:43,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574044863] [2022-07-13 10:50:43,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:50:43,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:43,083 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) [2022-07-13 10:50:43,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 10:50:43,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:50:43,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:43,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 10:50:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:43,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:43,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005957980] [2022-07-13 10:50:43,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:43,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574044863] [2022-07-13 10:50:43,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574044863] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:43,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:43,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-13 10:50:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698887959] [2022-07-13 10:50:43,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:43,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 10:50:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 10:50:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-13 10:50:43,277 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:43,383 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2022-07-13 10:50:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 10:50:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-13 10:50:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:43,384 INFO L225 Difference]: With dead ends: 87 [2022-07-13 10:50:43,384 INFO L226 Difference]: Without dead ends: 73 [2022-07-13 10:50:43,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-07-13 10:50:43,385 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 88 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:43,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 100 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:50:43,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-13 10:50:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2022-07-13 10:50:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 10:50:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-07-13 10:50:43,397 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 36 [2022-07-13 10:50:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:43,398 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-07-13 10:50:43,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-07-13 10:50:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 10:50:43,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:43,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:43,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:43,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:43,615 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 5 times [2022-07-13 10:50:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:43,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727880765] [2022-07-13 10:50:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:43,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:43,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032026757] [2022-07-13 10:50:43,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 10:50:43,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:43,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:43,636 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) [2022-07-13 10:50:43,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 10:50:43,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-13 10:50:43,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:43,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 10:50:43,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:43,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:43,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:43,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727880765] [2022-07-13 10:50:43,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:43,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032026757] [2022-07-13 10:50:43,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032026757] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:43,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:43,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-13 10:50:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389543197] [2022-07-13 10:50:43,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:43,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 10:50:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 10:50:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-13 10:50:43,882 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:44,048 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2022-07-13 10:50:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 10:50:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-13 10:50:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:44,050 INFO L225 Difference]: With dead ends: 72 [2022-07-13 10:50:44,050 INFO L226 Difference]: Without dead ends: 68 [2022-07-13 10:50:44,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-13 10:50:44,051 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:44,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 149 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:50:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-13 10:50:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2022-07-13 10:50:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 10:50:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-07-13 10:50:44,058 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 36 [2022-07-13 10:50:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:44,059 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-07-13 10:50:44,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-07-13 10:50:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 10:50:44,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:44,060 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:44,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:44,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:44,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 6 times [2022-07-13 10:50:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:44,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410555313] [2022-07-13 10:50:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:44,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:44,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58388584] [2022-07-13 10:50:44,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 10:50:44,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:44,297 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) [2022-07-13 10:50:44,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 10:50:44,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-13 10:50:44,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:44,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-13 10:50:44,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:44,527 INFO L390 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 10 treesize of output 8 [2022-07-13 10:50:44,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,547 INFO L390 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 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-13 10:50:44,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-07-13 10:50:44,554 INFO L390 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 14 treesize of output 13 [2022-07-13 10:50:44,560 INFO L390 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 16 treesize of output 15 [2022-07-13 10:50:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,619 INFO L390 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 0 case distinctions, treesize of input 48 treesize of output 47 [2022-07-13 10:50:44,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,625 INFO L390 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 22 treesize of output 26 [2022-07-13 10:50:44,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 47 treesize of output 52 [2022-07-13 10:50:44,729 INFO L356 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-07-13 10:50:44,733 INFO L390 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 109 treesize of output 88 [2022-07-13 10:50:44,739 INFO L390 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 0 case distinctions, treesize of input 42 treesize of output 45 [2022-07-13 10:50:44,751 INFO L356 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-07-13 10:50:44,751 INFO L390 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 66 treesize of output 75 [2022-07-13 10:50:44,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 36 [2022-07-13 10:50:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 31 treesize of output 40 [2022-07-13 10:50:44,779 INFO L390 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 22 treesize of output 11 [2022-07-13 10:50:44,782 INFO L390 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 11 treesize of output 5 [2022-07-13 10:50:44,914 INFO L356 Elim1Store]: treesize reduction 40, result has 11.1 percent of original size [2022-07-13 10:50:44,915 INFO L390 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 193 treesize of output 140 [2022-07-13 10:50:44,934 INFO L356 Elim1Store]: treesize reduction 64, result has 7.2 percent of original size [2022-07-13 10:50:44,934 INFO L390 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 156 treesize of output 145 [2022-07-13 10:50:44,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 118 treesize of output 96 [2022-07-13 10:50:44,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:44,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 treesize of output 44 [2022-07-13 10:50:44,962 INFO L390 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 10 treesize of output 9 [2022-07-13 10:50:44,967 INFO L390 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 7 [2022-07-13 10:50:44,970 INFO L390 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 [2022-07-13 10:50:45,358 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-13 10:50:45,358 INFO L390 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 361 treesize of output 238 [2022-07-13 10:50:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,367 INFO L390 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 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-13 10:50:45,375 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-13 10:50:45,410 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-13 10:50:45,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 196 treesize of output 235 [2022-07-13 10:50:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,511 INFO L356 Elim1Store]: treesize reduction 307, result has 13.0 percent of original size [2022-07-13 10:50:45,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 108 treesize of output 193 [2022-07-13 10:50:45,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,599 INFO L356 Elim1Store]: treesize reduction 166, result has 21.7 percent of original size [2022-07-13 10:50:45,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 55 treesize of output 102 [2022-07-13 10:50:46,616 INFO L390 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 49 treesize of output 37 [2022-07-13 10:50:51,748 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 10:50:51,748 INFO L390 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 176 treesize of output 148 [2022-07-13 10:50:51,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,877 INFO L356 Elim1Store]: treesize reduction 52, result has 71.6 percent of original size [2022-07-13 10:50:51,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 75 treesize of output 177 [2022-07-13 10:50:51,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:51,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:52,044 INFO L356 Elim1Store]: treesize reduction 52, result has 71.6 percent of original size [2022-07-13 10:50:52,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 164 treesize of output 254 [2022-07-13 10:50:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:53,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:51:07,625 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int)) (|v_ULTIMATE.start_main_~count~0#1_75| Int) (v_ArrVal_455 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~count~0#1_75| 3)) (= (let ((.cse4 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_455) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse5 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 4))))))) (let ((.cse1 (* |v_ULTIMATE.start_main_~count~0#1_75| 4)) (.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse4)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse1)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse1)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_75| 1) c_~ARR_SIZE~0))) is different from false [2022-07-13 10:51:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:51:07,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410555313] [2022-07-13 10:51:07,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:51:07,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58388584] [2022-07-13 10:51:07,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58388584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:51:07,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:51:07,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-13 10:51:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953481876] [2022-07-13 10:51:07,768 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 10:51:07,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 10:51:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:51:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 10:51:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=945, Unknown=8, NotChecked=64, Total=1190 [2022-07-13 10:51:07,769 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:51:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:08,269 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-07-13 10:51:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 10:51:08,270 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-13 10:51:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:08,271 INFO L225 Difference]: With dead ends: 91 [2022-07-13 10:51:08,271 INFO L226 Difference]: Without dead ends: 87 [2022-07-13 10:51:08,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=222, Invalid=1256, Unknown=8, NotChecked=74, Total=1560 [2022-07-13 10:51:08,273 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:08,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 216 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 119 Unchecked, 0.2s Time] [2022-07-13 10:51:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-13 10:51:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2022-07-13 10:51:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 10:51:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2022-07-13 10:51:08,282 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 38 [2022-07-13 10:51:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:08,282 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2022-07-13 10:51:08,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:51:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2022-07-13 10:51:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 10:51:08,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:08,283 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:51:08,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:08,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:08,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 7 times [2022-07-13 10:51:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:51:08,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062420266] [2022-07-13 10:51:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:51:08,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:51:08,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623638020] [2022-07-13 10:51:08,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 10:51:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:51:08,499 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) [2022-07-13 10:51:08,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 10:51:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:51:08,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 10:51:08,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:51:08,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:51:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:51:08,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:51:08,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062420266] [2022-07-13 10:51:08,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:51:08,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623638020] [2022-07-13 10:51:08,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623638020] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:51:08,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:51:08,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-13 10:51:08,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445210505] [2022-07-13 10:51:08,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:51:08,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 10:51:08,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:51:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 10:51:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-13 10:51:08,725 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:51:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:08,937 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2022-07-13 10:51:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 10:51:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-07-13 10:51:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:08,938 INFO L225 Difference]: With dead ends: 123 [2022-07-13 10:51:08,938 INFO L226 Difference]: Without dead ends: 107 [2022-07-13 10:51:08,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2022-07-13 10:51:08,939 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 97 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:08,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 145 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:51:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-13 10:51:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2022-07-13 10:51:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 71 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 10:51:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-07-13 10:51:08,949 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 40 [2022-07-13 10:51:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:08,950 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-07-13 10:51:08,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:51:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-07-13 10:51:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 10:51:08,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:08,951 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:51:08,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:09,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:09,156 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1011334033, now seen corresponding path program 8 times [2022-07-13 10:51:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:51:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893528294] [2022-07-13 10:51:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:51:09,164 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:51:09,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067018160] [2022-07-13 10:51:09,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:51:09,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:09,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:51:09,166 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) [2022-07-13 10:51:09,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 10:51:09,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:51:09,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:51:09,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 10:51:09,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:51:09,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:51:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:51:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:51:09,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893528294] [2022-07-13 10:51:09,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:51:09,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067018160] [2022-07-13 10:51:09,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067018160] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:51:09,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:51:09,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-13 10:51:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397303995] [2022-07-13 10:51:09,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:51:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 10:51:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:51:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 10:51:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-13 10:51:09,412 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:51:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:09,600 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2022-07-13 10:51:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 10:51:09,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-07-13 10:51:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:09,601 INFO L225 Difference]: With dead ends: 106 [2022-07-13 10:51:09,601 INFO L226 Difference]: Without dead ends: 102 [2022-07-13 10:51:09,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-07-13 10:51:09,602 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:09,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 155 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:51:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-13 10:51:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2022-07-13 10:51:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 10:51:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2022-07-13 10:51:09,621 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 40 [2022-07-13 10:51:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:09,621 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2022-07-13 10:51:09,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:51:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2022-07-13 10:51:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 10:51:09,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:09,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:51:09,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:09,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 10:51:09,822 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:09,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash -943992564, now seen corresponding path program 1 times [2022-07-13 10:51:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:51:09,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298229567] [2022-07-13 10:51:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:51:09,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:51:09,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411856] [2022-07-13 10:51:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:09,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:09,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:51:09,833 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) [2022-07-13 10:51:09,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 10:51:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:51:10,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-13 10:51:10,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:10,015 INFO L390 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 10 treesize of output 8 [2022-07-13 10:51:10,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,040 INFO L390 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 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-13 10:51:10,043 INFO L390 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 16 treesize of output 15 [2022-07-13 10:51:10,045 INFO L390 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 33 treesize of output 32 [2022-07-13 10:51:10,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-07-13 10:51:10,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:10,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:10,176 INFO L356 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-07-13 10:51:10,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 86 treesize of output 81 [2022-07-13 10:51:10,510 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-13 10:51:10,511 INFO L390 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 157 treesize of output 112 [2022-07-13 10:51:10,516 INFO L390 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 0 case distinctions, treesize of input 38 treesize of output 41 [2022-07-13 10:51:10,536 INFO L356 Elim1Store]: treesize reduction 50, result has 16.7 percent of original size [2022-07-13 10:51:10,536 INFO L390 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 95 treesize of output 106 [2022-07-13 10:51:10,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:10,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 44 treesize of output 49 [2022-07-13 10:51:10,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:10,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:10,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:10,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-07-13 10:51:11,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,023 INFO L390 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 0 case distinctions, treesize of input 138 treesize of output 121 [2022-07-13 10:51:11,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2022-07-13 10:51:11,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 99 [2022-07-13 10:51:11,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,566 INFO L356 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-07-13 10:51:11,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 40 [2022-07-13 10:51:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:51:11,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:51:11,943 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int))) (= (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_732) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_733) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 2 (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)))))) 2)) is different from false [2022-07-13 10:51:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:51:14,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298229567] [2022-07-13 10:51:14,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:51:14,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411856] [2022-07-13 10:51:14,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411856] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:51:14,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:51:14,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-07-13 10:51:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501777834] [2022-07-13 10:51:14,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 10:51:14,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 10:51:14,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:51:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 10:51:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=873, Unknown=8, NotChecked=60, Total=1056 [2022-07-13 10:51:14,138 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:51:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:14,434 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-07-13 10:51:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 10:51:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-07-13 10:51:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:14,435 INFO L225 Difference]: With dead ends: 108 [2022-07-13 10:51:14,435 INFO L226 Difference]: Without dead ends: 96 [2022-07-13 10:51:14,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=140, Invalid=1116, Unknown=8, NotChecked=68, Total=1332 [2022-07-13 10:51:14,436 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:14,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 308 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 214 Unchecked, 0.1s Time] [2022-07-13 10:51:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-13 10:51:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2022-07-13 10:51:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 79 states have internal predecessors, (86), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-13 10:51:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2022-07-13 10:51:14,446 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 42 [2022-07-13 10:51:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:14,446 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2022-07-13 10:51:14,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:51:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2022-07-13 10:51:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 10:51:14,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:14,447 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:51:14,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:14,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:14,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1282630227, now seen corresponding path program 9 times [2022-07-13 10:51:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:51:14,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627432765] [2022-07-13 10:51:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:51:14,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:51:14,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525628200] [2022-07-13 10:51:14,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:51:14,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:14,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:51:14,683 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) [2022-07-13 10:51:14,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 10:51:14,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-07-13 10:51:14,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:51:14,989 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 108 conjunts are in the unsatisfiable core [2022-07-13 10:51:14,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:14,999 INFO L390 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 10 treesize of output 8 [2022-07-13 10:51:15,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,016 INFO L390 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 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-13 10:51:15,019 INFO L390 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 16 treesize of output 15 [2022-07-13 10:51:15,022 INFO L390 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 33 treesize of output 32 [2022-07-13 10:51:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,083 INFO L390 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 0 case distinctions, treesize of input 68 treesize of output 67 [2022-07-13 10:51:15,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,090 INFO L390 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 33 treesize of output 37 [2022-07-13 10:51:15,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 67 treesize of output 72 [2022-07-13 10:51:15,182 INFO L356 Elim1Store]: treesize reduction 32, result has 13.5 percent of original size [2022-07-13 10:51:15,182 INFO L390 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 101 treesize of output 82 [2022-07-13 10:51:15,186 INFO L390 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 0 case distinctions, treesize of input 38 treesize of output 41 [2022-07-13 10:51:15,200 INFO L356 Elim1Store]: treesize reduction 49, result has 9.3 percent of original size [2022-07-13 10:51:15,200 INFO L390 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 62 treesize of output 71 [2022-07-13 10:51:15,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 34 [2022-07-13 10:51:15,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 38 [2022-07-13 10:51:15,225 INFO L390 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 20 treesize of output 9 [2022-07-13 10:51:15,228 INFO L390 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 9 treesize of output 5 [2022-07-13 10:51:15,309 INFO L356 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-07-13 10:51:15,309 INFO L390 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 133 treesize of output 108 [2022-07-13 10:51:15,315 INFO L390 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 0 case distinctions, treesize of input 42 treesize of output 45 [2022-07-13 10:51:15,336 INFO L356 Elim1Store]: treesize reduction 46, result has 17.9 percent of original size [2022-07-13 10:51:15,337 INFO L390 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 77 treesize of output 88 [2022-07-13 10:51:15,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,372 INFO L356 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2022-07-13 10:51:15,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 56 [2022-07-13 10:51:15,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,409 INFO L356 Elim1Store]: treesize reduction 90, result has 22.4 percent of original size [2022-07-13 10:51:15,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 50 [2022-07-13 10:51:15,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2022-07-13 10:51:15,453 INFO L390 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 11 treesize of output 5 [2022-07-13 10:51:15,611 INFO L356 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2022-07-13 10:51:15,611 INFO L390 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 253 treesize of output 188 [2022-07-13 10:51:15,636 INFO L356 Elim1Store]: treesize reduction 68, result has 6.8 percent of original size [2022-07-13 10:51:15,636 INFO L390 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 212 treesize of output 193 [2022-07-13 10:51:15,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,673 INFO L356 Elim1Store]: treesize reduction 133, result has 16.4 percent of original size [2022-07-13 10:51:15,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 137 [2022-07-13 10:51:15,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:15,724 INFO L356 Elim1Store]: treesize reduction 175, result has 12.9 percent of original size [2022-07-13 10:51:15,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-07-13 10:51:15,736 INFO L390 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 20 treesize of output 19 [2022-07-13 10:51:15,749 INFO L390 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 17 treesize of output 11 [2022-07-13 10:51:17,245 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-13 10:51:17,245 INFO L390 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 493 treesize of output 338 [2022-07-13 10:51:17,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,270 INFO L390 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 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-13 10:51:17,280 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-13 10:51:17,357 INFO L356 Elim1Store]: treesize reduction 111, result has 8.3 percent of original size [2022-07-13 10:51:17,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 347 treesize of output 360 [2022-07-13 10:51:17,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,548 INFO L356 Elim1Store]: treesize reduction 373, result has 12.4 percent of original size [2022-07-13 10:51:17,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 229 treesize of output 278 [2022-07-13 10:51:17,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:17,679 INFO L356 Elim1Store]: treesize reduction 216, result has 19.4 percent of original size [2022-07-13 10:51:17,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 77 treesize of output 133 [2022-07-13 10:51:18,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:18,778 INFO L356 Elim1Store]: treesize reduction 122, result has 20.3 percent of original size [2022-07-13 10:51:18,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 100 [2022-07-13 10:53:56,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:53:56,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:53:57,112 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:53:57,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 28 disjoint index pairs (out of 231 index pairs), introduced 20 new quantified variables, introduced 42 case distinctions, treesize of input 268 treesize of output 624 [2022-07-13 10:53:57,140 INFO L390 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 195 treesize of output 155 [2022-07-13 10:54:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:54:27,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:54:31,034 WARN L833 $PredicateComparison]: unable to prove that (or (<= c_~ARR_SIZE~0 4) (and (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_856 (Array Int Int))) (= (+ 2 (div (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_856) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4)) (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ 16 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (- 4) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 2)) 0)) (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_856 (Array Int Int))) (= (mod (let ((.cse8 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse6 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_856) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse9 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8 4)) (select .cse9 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8))))))) (let ((.cse5 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse7 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse8) (+ (select .cse7 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse8 4)) (select .cse7 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse8)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse6) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse6 (+ 16 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse5 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 2) 0))) (< 5 c_~ARR_SIZE~0)) is different from false [2022-07-13 10:54:32,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:54:32,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627432765] [2022-07-13 10:54:32,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:54:32,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525628200] [2022-07-13 10:54:32,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525628200] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:54:32,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:54:32,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-13 10:54:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020757689] [2022-07-13 10:54:32,062 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 10:54:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 10:54:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:54:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 10:54:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1503, Unknown=1, NotChecked=80, Total=1806 [2022-07-13 10:54:32,063 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:54:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:54:34,174 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2022-07-13 10:54:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 10:54:34,175 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-07-13 10:54:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:54:34,176 INFO L225 Difference]: With dead ends: 122 [2022-07-13 10:54:34,176 INFO L226 Difference]: Without dead ends: 118 [2022-07-13 10:54:34,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=278, Invalid=1981, Unknown=1, NotChecked=92, Total=2352 [2022-07-13 10:54:34,177 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:54:34,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 243 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 163 Unchecked, 0.2s Time] [2022-07-13 10:54:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-13 10:54:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2022-07-13 10:54:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 88 states have (on average 1.0909090909090908) internal successors, (96), 88 states have internal predecessors, (96), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 10:54:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2022-07-13 10:54:34,194 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 42 [2022-07-13 10:54:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:54:34,195 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2022-07-13 10:54:34,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 10:54:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2022-07-13 10:54:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 10:54:34,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:54:34,196 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:54:34,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 10:54:34,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 10:54:34,418 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:54:34,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:54:34,418 INFO L85 PathProgramCache]: Analyzing trace with hash 5267605, now seen corresponding path program 10 times [2022-07-13 10:54:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:54:34,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941633288] [2022-07-13 10:54:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:54:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:54:34,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:54:34,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845965511] [2022-07-13 10:54:34,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:54:34,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:54:34,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:54:34,437 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) [2022-07-13 10:54:34,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 10:54:34,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:54:34,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:54:34,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 10:54:34,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:54:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:54:34,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:54:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:54:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:54:34,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941633288] [2022-07-13 10:54:34,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:54:34,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845965511] [2022-07-13 10:54:34,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845965511] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:54:34,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:54:34,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2022-07-13 10:54:34,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796911361] [2022-07-13 10:54:34,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:54:34,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 10:54:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:54:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 10:54:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-07-13 10:54:34,857 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:54:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:54:35,519 INFO L93 Difference]: Finished difference Result 189 states and 197 transitions. [2022-07-13 10:54:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 10:54:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-07-13 10:54:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:54:35,523 INFO L225 Difference]: With dead ends: 189 [2022-07-13 10:54:35,523 INFO L226 Difference]: Without dead ends: 171 [2022-07-13 10:54:35,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=1107, Unknown=0, NotChecked=0, Total=1482 [2022-07-13 10:54:35,524 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 193 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 10:54:35,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 139 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 10:54:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-13 10:54:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 126. [2022-07-13 10:54:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 105 states have (on average 1.0952380952380953) internal successors, (115), 105 states have internal predecessors, (115), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-13 10:54:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2022-07-13 10:54:35,542 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 44 [2022-07-13 10:54:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:54:35,542 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2022-07-13 10:54:35,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:54:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2022-07-13 10:54:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 10:54:35,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:54:35,543 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:54:35,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 10:54:35,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 10:54:35,760 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:54:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:54:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1257303952, now seen corresponding path program 2 times [2022-07-13 10:54:35,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:54:35,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500670036] [2022-07-13 10:54:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:54:35,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:54:35,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:54:35,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920785396] [2022-07-13 10:54:35,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:54:35,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:54:35,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:54:35,770 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) [2022-07-13 10:54:35,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 10:54:35,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:54:35,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:54:35,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 115 conjunts are in the unsatisfiable core [2022-07-13 10:54:35,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:54:35,993 INFO L390 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 10 treesize of output 8 [2022-07-13 10:54:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,013 INFO L390 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 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-13 10:54:36,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-07-13 10:54:36,019 INFO L390 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 16 treesize of output 15 [2022-07-13 10:54:36,022 INFO L390 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 14 treesize of output 13 [2022-07-13 10:54:36,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-07-13 10:54:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:36,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:36,203 INFO L356 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2022-07-13 10:54:36,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 98 treesize of output 88 [2022-07-13 10:54:36,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:36,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:36,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:36,376 INFO L356 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-07-13 10:54:36,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 116 treesize of output 117 [2022-07-13 10:54:37,036 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-13 10:54:37,036 INFO L390 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 361 treesize of output 238 [2022-07-13 10:54:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,057 INFO L390 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 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-13 10:54:37,078 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-13 10:54:37,153 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-13 10:54:37,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 196 treesize of output 235 [2022-07-13 10:54:37,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,270 INFO L356 Elim1Store]: treesize reduction 204, result has 13.2 percent of original size [2022-07-13 10:54:37,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 108 treesize of output 196 [2022-07-13 10:54:37,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:37,351 INFO L356 Elim1Store]: treesize reduction 115, result has 18.4 percent of original size [2022-07-13 10:54:37,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 91 [2022-07-13 10:54:37,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 209 treesize of output 200 [2022-07-13 10:54:37,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:37,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:37,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:37,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 215 treesize of output 191 [2022-07-13 10:54:37,838 INFO L390 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 0 case distinctions, treesize of input 212 treesize of output 199 [2022-07-13 10:54:37,853 INFO L390 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 13 treesize of output 9 [2022-07-13 10:54:37,863 INFO L390 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 13 treesize of output 9 [2022-07-13 10:54:44,836 INFO L356 Elim1Store]: treesize reduction 273, result has 9.3 percent of original size [2022-07-13 10:54:44,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 982 treesize of output 837 [2022-07-13 10:54:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:44,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:44,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 696 treesize of output 637 [2022-07-13 10:54:44,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:44,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:45,168 INFO L356 Elim1Store]: treesize reduction 334, result has 6.4 percent of original size [2022-07-13 10:54:45,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 769 treesize of output 766 [2022-07-13 10:54:45,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 590 treesize of output 605 [2022-07-13 10:54:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:45,276 INFO L390 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 0 case distinctions, treesize of input 28 treesize of output 14 [2022-07-13 10:54:45,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:45,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:45,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:45,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:45,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:45,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2022-07-13 10:54:49,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:49,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:49,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:54:49,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:54:49,883 INFO L356 Elim1Store]: treesize reduction 177, result has 16.5 percent of original size [2022-07-13 10:54:49,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 12 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 457 treesize of output 408