./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array24_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/array24_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 b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:06:39,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:06:39,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:06:39,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:06:39,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:06:39,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:06:39,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:06:39,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:06:39,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:06:39,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:06:39,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:06:39,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:06:39,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:06:39,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:06:39,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:06:39,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:06:39,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:06:39,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:06:39,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:06:39,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:06:39,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:06:39,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:06:39,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:06:39,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:06:39,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:06:39,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:06:39,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:06:39,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:06:39,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:06:39,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:06:39,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:06:39,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:06:39,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:06:39,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:06:39,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:06:39,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:06:39,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:06:39,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:06:39,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:06:39,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:06:39,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:06:39,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:06:39,368 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:06:39,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:06:39,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:06:39,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:06:39,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:06:39,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:06:39,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:06:39,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:06:39,371 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:06:39,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:06:39,371 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:06:39,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:06:39,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:06:39,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:06:39,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:06:39,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:06:39,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:06:39,373 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:06:39,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:06:39,373 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:06:39,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:06:39,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:06:39,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:06:39,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:06:39,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:06:39,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:06:39,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:06:39,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:06:39,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:06:39,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:06:39,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:06:39,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:06:39,394 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:06:39,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:06:39,394 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:06:39,394 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2023-02-16 00:06:39,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:06:39,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:06:39,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:06:39,852 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:06:39,853 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:06:39,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array24_pattern.c [2023-02-16 00:06:41,626 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:06:41,903 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:06:41,904 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c [2023-02-16 00:06:41,913 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91ec331b/9b3dac6592ed4b81956cd87a65948704/FLAGfff137f69 [2023-02-16 00:06:41,934 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91ec331b/9b3dac6592ed4b81956cd87a65948704 [2023-02-16 00:06:41,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:06:41,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:06:41,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:06:41,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:06:41,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:06:41,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:06:41" (1/1) ... [2023-02-16 00:06:41,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531a4307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:41, skipping insertion in model container [2023-02-16 00:06:41,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:06:41" (1/1) ... [2023-02-16 00:06:41,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:06:42,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:06:42,163 WARN L237 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/array24_pattern.c[1359,1372] [2023-02-16 00:06:42,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:06:42,242 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:06:42,256 WARN L237 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/array24_pattern.c[1359,1372] [2023-02-16 00:06:42,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:06:42,279 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:06:42,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42 WrapperNode [2023-02-16 00:06:42,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:06:42,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:06:42,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:06:42,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:06:42,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,354 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2023-02-16 00:06:42,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:06:42,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:06:42,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:06:42,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:06:42,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,404 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:06:42,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:06:42,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:06:42,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:06:42,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (1/1) ... [2023-02-16 00:06:42,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:06:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:06:42,483 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) [2023-02-16 00:06:42,530 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 [2023-02-16 00:06:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2023-02-16 00:06:42,572 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2023-02-16 00:06:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:06:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 00:06:42,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 00:06:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:06:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:06:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:06:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:06:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:06:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:06:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:06:42,664 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:06:42,669 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:06:42,953 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:06:42,964 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:06:42,973 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-16 00:06:42,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:06:42 BoogieIcfgContainer [2023-02-16 00:06:42,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:06:42,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:06:42,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:06:42,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:06:42,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:06:41" (1/3) ... [2023-02-16 00:06:42,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729310ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:06:42, skipping insertion in model container [2023-02-16 00:06:42,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:06:42" (2/3) ... [2023-02-16 00:06:42,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729310ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:06:42, skipping insertion in model container [2023-02-16 00:06:42,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:06:42" (3/3) ... [2023-02-16 00:06:42,989 INFO L112 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2023-02-16 00:06:43,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:06:43,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:06:43,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:06:43,088 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33683e36, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:06:43,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:06:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:06:43,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 00:06:43,102 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:06:43,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:06:43,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:06:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:06:43,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2023-02-16 00:06:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:06:43,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267164969] [2023-02-16 00:06:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:43,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:06:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:06:43,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:06:43,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267164969] [2023-02-16 00:06:43,262 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 00:06:43,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189375362] [2023-02-16 00:06:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:43,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:06:43,266 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) [2023-02-16 00:06:43,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:06:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:06:43,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 00:06:43,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:06:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:06:43,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:06:43,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189375362] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:06:43,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:06:43,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:06:43,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446412354] [2023-02-16 00:06:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:06:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:06:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:06:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:06:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:06:43,437 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2023-02-16 00:06:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:06:43,464 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2023-02-16 00:06:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:06:43,466 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 [2023-02-16 00:06:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:06:43,478 INFO L225 Difference]: With dead ends: 77 [2023-02-16 00:06:43,478 INFO L226 Difference]: Without dead ends: 36 [2023-02-16 00:06:43,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:06:43,483 INFO L413 NwaCegarLoop]: 50 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, 50 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 [2023-02-16 00:06:43,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:06:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-16 00:06:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-16 00:06:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:06:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2023-02-16 00:06:43,543 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2023-02-16 00:06:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:06:43,543 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2023-02-16 00:06:43,544 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) [2023-02-16 00:06:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-02-16 00:06:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 00:06:43,545 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:06:43,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:06:43,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:06:43,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-16 00:06:43,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:06:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:06:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2023-02-16 00:06:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:06:43,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402909761] [2023-02-16 00:06:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:06:43,830 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:06:43,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625933353] [2023-02-16 00:06:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:43,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:43,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:06:43,837 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) [2023-02-16 00:06:43,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:06:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:06:43,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 00:06:43,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:06:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:06:44,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:06:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:06:44,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402909761] [2023-02-16 00:06:44,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:06:44,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625933353] [2023-02-16 00:06:44,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625933353] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:06:44,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:06:44,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 00:06:44,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137646398] [2023-02-16 00:06:44,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:06:44,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 00:06:44,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:06:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 00:06:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:06:44,078 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:06:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:06:44,417 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2023-02-16 00:06:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 00:06:44,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-02-16 00:06:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:06:44,422 INFO L225 Difference]: With dead ends: 76 [2023-02-16 00:06:44,423 INFO L226 Difference]: Without dead ends: 48 [2023-02-16 00:06:44,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:06:44,425 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:06:44,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 89 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:06:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-16 00:06:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-02-16 00:06:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:06:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-02-16 00:06:44,449 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2023-02-16 00:06:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:06:44,450 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-02-16 00:06:44,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:06:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-02-16 00:06:44,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 00:06:44,452 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:06:44,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:06:44,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 00:06:44,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-16 00:06:44,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:06:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:06:44,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2023-02-16 00:06:44,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:06:44,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325874024] [2023-02-16 00:06:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:44,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:06:44,690 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:06:44,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374769668] [2023-02-16 00:06:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:06:44,718 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) [2023-02-16 00:06:44,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:06:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:06:44,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 00:06:44,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:06:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 00:06:44,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:06:44,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:06:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325874024] [2023-02-16 00:06:44,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:06:44,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374769668] [2023-02-16 00:06:44,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374769668] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:06:44,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:06:44,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:06:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457138518] [2023-02-16 00:06:44,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:06:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:06:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:06:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:06:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:06:44,927 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:06:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:06:45,002 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2023-02-16 00:06:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:06:45,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-02-16 00:06:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:06:45,004 INFO L225 Difference]: With dead ends: 79 [2023-02-16 00:06:45,004 INFO L226 Difference]: Without dead ends: 46 [2023-02-16 00:06:45,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:06:45,005 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 29 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:06:45,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 76 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:06:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-16 00:06:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-02-16 00:06:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:06:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-02-16 00:06:45,013 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2023-02-16 00:06:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:06:45,013 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-02-16 00:06:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:06:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-02-16 00:06:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-16 00:06:45,021 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:06:45,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:06:45,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:06:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:45,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:06:45,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:06:45,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2023-02-16 00:06:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:06:45,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67756889] [2023-02-16 00:06:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:06:45,242 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:06:45,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835173756] [2023-02-16 00:06:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:45,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:06:45,272 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) [2023-02-16 00:06:45,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:06:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:06:45,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 00:06:45,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:06:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 00:06:45,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:06:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 00:06:45,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:06:45,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67756889] [2023-02-16 00:06:45,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:06:45,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835173756] [2023-02-16 00:06:45,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835173756] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:06:45,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:06:45,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-16 00:06:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942667484] [2023-02-16 00:06:45,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:06:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 00:06:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:06:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 00:06:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:06:45,800 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-16 00:06:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:06:46,108 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2023-02-16 00:06:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 00:06:46,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2023-02-16 00:06:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:06:46,113 INFO L225 Difference]: With dead ends: 85 [2023-02-16 00:06:46,113 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 00:06:46,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-02-16 00:06:46,129 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:06:46,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 105 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:06:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 00:06:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2023-02-16 00:06:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:06:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2023-02-16 00:06:46,137 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2023-02-16 00:06:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:06:46,137 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2023-02-16 00:06:46,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-16 00:06:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2023-02-16 00:06:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-16 00:06:46,139 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:06:46,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:06:46,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 00:06:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:46,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:06:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:06:46,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2023-02-16 00:06:46,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:06:46,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484519324] [2023-02-16 00:06:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:46,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:06:46,355 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:06:46,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318683182] [2023-02-16 00:06:46,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:06:46,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:46,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:06:46,386 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) [2023-02-16 00:06:46,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:06:46,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:06:46,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:06:46,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:06:46,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:06:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-16 00:06:46,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:06:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 00:06:46,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:06:46,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484519324] [2023-02-16 00:06:46,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:06:46,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318683182] [2023-02-16 00:06:46,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318683182] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:06:46,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:06:46,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-16 00:06:46,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930450789] [2023-02-16 00:06:46,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:06:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 00:06:46,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:06:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 00:06:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:06:46,667 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:06:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:06:46,851 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2023-02-16 00:06:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:06:46,852 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2023-02-16 00:06:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:06:46,856 INFO L225 Difference]: With dead ends: 106 [2023-02-16 00:06:46,856 INFO L226 Difference]: Without dead ends: 74 [2023-02-16 00:06:46,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-16 00:06:46,859 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 59 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:06:46,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 154 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:06:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-16 00:06:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2023-02-16 00:06:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:06:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2023-02-16 00:06:46,898 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2023-02-16 00:06:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:06:46,900 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2023-02-16 00:06:46,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:06:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2023-02-16 00:06:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 00:06:46,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:06:46,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:06:46,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 00:06:47,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:47,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:06:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:06:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2023-02-16 00:06:47,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:06:47,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307779537] [2023-02-16 00:06:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:06:47,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:06:47,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:06:47,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893564518] [2023-02-16 00:06:47,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:06:47,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:06:47,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:06:47,165 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) [2023-02-16 00:06:47,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:06:48,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-16 00:06:48,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:06:48,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 93 conjunts are in the unsatisfiable core [2023-02-16 00:06:48,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:06:48,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-16 00:06:49,161 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 31 [2023-02-16 00:06:50,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:50,632 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2023-02-16 00:06:50,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2023-02-16 00:06:50,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:50,770 INFO L321 Elim1Store]: treesize reduction 98, result has 14.8 percent of original size [2023-02-16 00:06:50,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 59 [2023-02-16 00:06:54,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:54,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:54,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:54,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:54,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:54,831 INFO L321 Elim1Store]: treesize reduction 248, result has 15.6 percent of original size [2023-02-16 00:06:54,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 79 treesize of output 74 [2023-02-16 00:06:56,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:56,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:56,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:06:56,576 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:06:56,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 93 [2023-02-16 00:06:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:06:57,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:07:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307779537] [2023-02-16 00:07:01,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893564518] [2023-02-16 00:07:01,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893564518] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:07:01,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:07:01,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2023-02-16 00:07:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197663595] [2023-02-16 00:07:01,512 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:07:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-16 00:07:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-16 00:07:01,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=2381, Unknown=1, NotChecked=0, Total=2862 [2023-02-16 00:07:01,514 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 00:07:04,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 00:07:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:07,657 INFO L93 Difference]: Finished difference Result 154 states and 187 transitions. [2023-02-16 00:07:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-16 00:07:07,657 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2023-02-16 00:07:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:07,659 INFO L225 Difference]: With dead ends: 154 [2023-02-16 00:07:07,659 INFO L226 Difference]: Without dead ends: 148 [2023-02-16 00:07:07,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1000, Invalid=5005, Unknown=1, NotChecked=0, Total=6006 [2023-02-16 00:07:07,662 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 229 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:07,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 404 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1110 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-02-16 00:07:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-02-16 00:07:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2023-02-16 00:07:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 89 states have internal predecessors, (108), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:07:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2023-02-16 00:07:07,690 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 63 [2023-02-16 00:07:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:07,690 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2023-02-16 00:07:07,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 00:07:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2023-02-16 00:07:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 00:07:07,697 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:07,697 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:07,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:07,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:07,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash -506553876, now seen corresponding path program 1 times [2023-02-16 00:07:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:07,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768303407] [2023-02-16 00:07:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:07,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:07,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809816182] [2023-02-16 00:07:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:07,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:07,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:07,933 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) [2023-02-16 00:07:07,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 00:07:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:07:08,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-16 00:07:08,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-16 00:07:08,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:07:08,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:08,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768303407] [2023-02-16 00:07:08,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:08,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809816182] [2023-02-16 00:07:08,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809816182] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:07:08,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:07:08,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:07:08,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323138236] [2023-02-16 00:07:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:07:08,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:07:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:07:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:07:08,086 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:07:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:08,111 INFO L93 Difference]: Finished difference Result 146 states and 178 transitions. [2023-02-16 00:07:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:07:08,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2023-02-16 00:07:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:08,113 INFO L225 Difference]: With dead ends: 146 [2023-02-16 00:07:08,113 INFO L226 Difference]: Without dead ends: 107 [2023-02-16 00:07:08,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:07:08,117 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:08,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:07:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-16 00:07:08,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2023-02-16 00:07:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 91 states have internal predecessors, (110), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:07:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2023-02-16 00:07:08,175 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 63 [2023-02-16 00:07:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:08,176 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2023-02-16 00:07:08,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:07:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2023-02-16 00:07:08,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-16 00:07:08,179 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:08,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:08,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:08,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:08,386 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:08,387 INFO L85 PathProgramCache]: Analyzing trace with hash -626605108, now seen corresponding path program 4 times [2023-02-16 00:07:08,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:08,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646800721] [2023-02-16 00:07:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:08,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:08,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:08,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502130436] [2023-02-16 00:07:08,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:07:08,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:08,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:08,437 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) [2023-02-16 00:07:08,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 00:07:08,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:07:08,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:07:08,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:07:08,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:07:08,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:07:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 26 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-16 00:07:08,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646800721] [2023-02-16 00:07:08,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502130436] [2023-02-16 00:07:08,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502130436] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:07:08,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:07:08,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-16 00:07:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719587837] [2023-02-16 00:07:08,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:07:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:07:08,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:07:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:07:08,693 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:07:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:08,938 INFO L93 Difference]: Finished difference Result 331 states and 413 transitions. [2023-02-16 00:07:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 00:07:08,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-02-16 00:07:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:08,943 INFO L225 Difference]: With dead ends: 331 [2023-02-16 00:07:08,944 INFO L226 Difference]: Without dead ends: 244 [2023-02-16 00:07:08,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-02-16 00:07:08,946 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 175 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:08,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 175 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:07:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-02-16 00:07:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 187. [2023-02-16 00:07:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 160 states have (on average 1.20625) internal successors, (193), 160 states have internal predecessors, (193), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-16 00:07:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2023-02-16 00:07:08,996 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 65 [2023-02-16 00:07:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:08,997 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2023-02-16 00:07:08,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:07:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2023-02-16 00:07:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-16 00:07:08,999 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:08,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:09,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:09,207 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,SelfDestructingSolverStorable7 [2023-02-16 00:07:09,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash -615703001, now seen corresponding path program 1 times [2023-02-16 00:07:09,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:09,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801067132] [2023-02-16 00:07:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:09,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:09,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:09,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135469590] [2023-02-16 00:07:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:09,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:09,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:09,245 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) [2023-02-16 00:07:09,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 00:07:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:07:09,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 00:07:09,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-16 00:07:09,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:07:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:09,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801067132] [2023-02-16 00:07:09,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135469590] [2023-02-16 00:07:09,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135469590] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:07:09,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:07:09,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:07:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776852917] [2023-02-16 00:07:09,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:07:09,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:07:09,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:09,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:07:09,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:07:09,408 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 00:07:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:09,474 INFO L93 Difference]: Finished difference Result 289 states and 354 transitions. [2023-02-16 00:07:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 00:07:09,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-02-16 00:07:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:09,486 INFO L225 Difference]: With dead ends: 289 [2023-02-16 00:07:09,486 INFO L226 Difference]: Without dead ends: 209 [2023-02-16 00:07:09,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:07:09,488 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:09,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 166 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:07:09,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-02-16 00:07:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2023-02-16 00:07:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 168 states have (on average 1.1964285714285714) internal successors, (201), 168 states have internal predecessors, (201), 17 states have call successors, (17), 9 states have call predecessors, (17), 13 states have return successors, (25), 21 states have call predecessors, (25), 17 states have call successors, (25) [2023-02-16 00:07:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 243 transitions. [2023-02-16 00:07:09,536 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 243 transitions. Word has length 69 [2023-02-16 00:07:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:09,536 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 243 transitions. [2023-02-16 00:07:09,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 00:07:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 243 transitions. [2023-02-16 00:07:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-16 00:07:09,539 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:09,539 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:09,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:09,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:09,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash -584683194, now seen corresponding path program 1 times [2023-02-16 00:07:09,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:09,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144632228] [2023-02-16 00:07:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:09,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:09,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:09,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274185357] [2023-02-16 00:07:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:09,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:09,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:09,762 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) [2023-02-16 00:07:09,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 00:07:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:07:09,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 00:07:09,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-16 00:07:09,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:07:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144632228] [2023-02-16 00:07:09,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274185357] [2023-02-16 00:07:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274185357] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:07:09,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:07:09,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:07:09,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611310290] [2023-02-16 00:07:09,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:07:09,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:07:09,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:07:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:07:09,895 INFO L87 Difference]: Start difference. First operand 199 states and 243 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:07:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:09,964 INFO L93 Difference]: Finished difference Result 368 states and 450 transitions. [2023-02-16 00:07:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 00:07:09,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2023-02-16 00:07:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:09,967 INFO L225 Difference]: With dead ends: 368 [2023-02-16 00:07:09,968 INFO L226 Difference]: Without dead ends: 221 [2023-02-16 00:07:09,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:07:09,969 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:09,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 162 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:07:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-02-16 00:07:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2023-02-16 00:07:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 176 states have (on average 1.1875) internal successors, (209), 172 states have internal predecessors, (209), 17 states have call successors, (17), 9 states have call predecessors, (17), 13 states have return successors, (25), 25 states have call predecessors, (25), 17 states have call successors, (25) [2023-02-16 00:07:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 251 transitions. [2023-02-16 00:07:09,998 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 251 transitions. Word has length 69 [2023-02-16 00:07:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:09,998 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 251 transitions. [2023-02-16 00:07:09,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:07:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 251 transitions. [2023-02-16 00:07:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-16 00:07:10,000 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:10,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:10,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:10,206 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,SelfDestructingSolverStorable9 [2023-02-16 00:07:10,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:10,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1526607175, now seen corresponding path program 1 times [2023-02-16 00:07:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:10,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094118402] [2023-02-16 00:07:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:10,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:10,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636783434] [2023-02-16 00:07:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:10,254 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) [2023-02-16 00:07:10,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 00:07:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:07:10,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 00:07:10,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-16 00:07:10,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:07:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-16 00:07:10,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:10,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094118402] [2023-02-16 00:07:10,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:10,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636783434] [2023-02-16 00:07:10,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636783434] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:07:10,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:07:10,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2023-02-16 00:07:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220840587] [2023-02-16 00:07:10,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:07:10,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-16 00:07:10,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:10,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-16 00:07:10,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-02-16 00:07:10,991 INFO L87 Difference]: Start difference. First operand 207 states and 251 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 4 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-16 00:07:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:11,641 INFO L93 Difference]: Finished difference Result 322 states and 377 transitions. [2023-02-16 00:07:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 00:07:11,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 4 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 69 [2023-02-16 00:07:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:11,643 INFO L225 Difference]: With dead ends: 322 [2023-02-16 00:07:11,643 INFO L226 Difference]: Without dead ends: 244 [2023-02-16 00:07:11,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2023-02-16 00:07:11,644 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 78 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:11,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 238 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:07:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-02-16 00:07:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 215. [2023-02-16 00:07:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 180 states have (on average 1.1722222222222223) internal successors, (211), 180 states have internal predecessors, (211), 19 states have call successors, (19), 11 states have call predecessors, (19), 15 states have return successors, (25), 23 states have call predecessors, (25), 19 states have call successors, (25) [2023-02-16 00:07:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 255 transitions. [2023-02-16 00:07:11,673 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 255 transitions. Word has length 69 [2023-02-16 00:07:11,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:11,673 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 255 transitions. [2023-02-16 00:07:11,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 4 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-16 00:07:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 255 transitions. [2023-02-16 00:07:11,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-16 00:07:11,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:11,675 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:11,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:11,880 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,SelfDestructingSolverStorable10 [2023-02-16 00:07:11,881 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:11,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash 385728908, now seen corresponding path program 5 times [2023-02-16 00:07:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:11,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388525189] [2023-02-16 00:07:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:11,891 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:11,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646757231] [2023-02-16 00:07:11,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 00:07:11,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:11,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:11,905 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) [2023-02-16 00:07:11,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 00:07:11,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-16 00:07:11,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:07:11,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:07:11,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-16 00:07:12,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:07:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-16 00:07:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388525189] [2023-02-16 00:07:12,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646757231] [2023-02-16 00:07:12,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646757231] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:07:12,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:07:12,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-02-16 00:07:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875600601] [2023-02-16 00:07:12,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:07:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 00:07:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 00:07:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:07:12,115 INFO L87 Difference]: Start difference. First operand 215 states and 255 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:07:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:12,500 INFO L93 Difference]: Finished difference Result 371 states and 437 transitions. [2023-02-16 00:07:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 00:07:12,501 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2023-02-16 00:07:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:12,503 INFO L225 Difference]: With dead ends: 371 [2023-02-16 00:07:12,503 INFO L226 Difference]: Without dead ends: 238 [2023-02-16 00:07:12,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2023-02-16 00:07:12,507 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 108 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:12,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 170 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:07:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-02-16 00:07:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 194. [2023-02-16 00:07:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 166 states have (on average 1.1626506024096386) internal successors, (193), 167 states have internal predecessors, (193), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2023-02-16 00:07:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 227 transitions. [2023-02-16 00:07:12,558 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 227 transitions. Word has length 69 [2023-02-16 00:07:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:12,559 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 227 transitions. [2023-02-16 00:07:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:07:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 227 transitions. [2023-02-16 00:07:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-16 00:07:12,559 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:12,560 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:12,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 00:07:12,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1130035513, now seen corresponding path program 6 times [2023-02-16 00:07:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:12,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702742020] [2023-02-16 00:07:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:12,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:12,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043882642] [2023-02-16 00:07:12,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 00:07:12,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:12,798 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:07:12,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 00:07:12,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-16 00:07:12,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:07:12,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:07:12,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-16 00:07:13,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:07:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-16 00:07:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:13,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702742020] [2023-02-16 00:07:13,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:13,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043882642] [2023-02-16 00:07:13,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043882642] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:07:13,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:07:13,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-02-16 00:07:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824601738] [2023-02-16 00:07:13,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:07:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 00:07:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 00:07:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:07:13,097 INFO L87 Difference]: Start difference. First operand 194 states and 227 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:07:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:13,372 INFO L93 Difference]: Finished difference Result 261 states and 299 transitions. [2023-02-16 00:07:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 00:07:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2023-02-16 00:07:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:13,373 INFO L225 Difference]: With dead ends: 261 [2023-02-16 00:07:13,373 INFO L226 Difference]: Without dead ends: 149 [2023-02-16 00:07:13,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-16 00:07:13,374 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 137 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:13,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 211 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:07:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-16 00:07:13,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2023-02-16 00:07:13,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 122 states have internal predecessors, (140), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2023-02-16 00:07:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2023-02-16 00:07:13,392 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 70 [2023-02-16 00:07:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:13,392 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2023-02-16 00:07:13,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:07:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2023-02-16 00:07:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-02-16 00:07:13,393 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:13,393 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:13,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 00:07:13,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 00:07:13,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash -698104178, now seen corresponding path program 7 times [2023-02-16 00:07:13,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:13,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118593144] [2023-02-16 00:07:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:13,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:13,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913191909] [2023-02-16 00:07:13,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 00:07:13,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:13,625 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:07:13,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 00:07:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:07:13,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:07:13,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 42 proven. 40 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-16 00:07:13,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:07:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-16 00:07:13,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:07:13,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118593144] [2023-02-16 00:07:13,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:07:13,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913191909] [2023-02-16 00:07:13,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913191909] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:07:13,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:07:13,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-16 00:07:13,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449044022] [2023-02-16 00:07:13,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:07:13,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:07:13,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:07:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:07:13,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:07:13,945 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:07:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:07:14,123 INFO L93 Difference]: Finished difference Result 150 states and 171 transitions. [2023-02-16 00:07:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:07:14,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2023-02-16 00:07:14,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:07:14,125 INFO L225 Difference]: With dead ends: 150 [2023-02-16 00:07:14,125 INFO L226 Difference]: Without dead ends: 99 [2023-02-16 00:07:14,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-16 00:07:14,126 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 91 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:07:14,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 107 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:07:14,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-16 00:07:14,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2023-02-16 00:07:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 83 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-16 00:07:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-16 00:07:14,137 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 74 [2023-02-16 00:07:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:07:14,138 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-16 00:07:14,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 00:07:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-16 00:07:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-16 00:07:14,139 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:07:14,140 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:07:14,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-16 00:07:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:14,340 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:07:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:07:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash 599706749, now seen corresponding path program 8 times [2023-02-16 00:07:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:07:14,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911231708] [2023-02-16 00:07:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:07:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:07:14,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:07:14,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856929919] [2023-02-16 00:07:14,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:07:14,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:07:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:07:14,362 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:07:14,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-16 00:07:15,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:07:15,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:07:16,004 WARN L261 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 144 conjunts are in the unsatisfiable core [2023-02-16 00:07:16,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:07:16,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-16 00:07:16,102 INFO L321 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2023-02-16 00:07:16,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2023-02-16 00:07:16,237 INFO L321 Elim1Store]: treesize reduction 53, result has 34.6 percent of original size [2023-02-16 00:07:16,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2023-02-16 00:07:16,449 INFO L321 Elim1Store]: treesize reduction 110, result has 30.4 percent of original size [2023-02-16 00:07:16,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 73 [2023-02-16 00:07:16,596 INFO L321 Elim1Store]: treesize reduction 166, result has 26.9 percent of original size [2023-02-16 00:07:16,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 89 [2023-02-16 00:07:16,791 INFO L321 Elim1Store]: treesize reduction 156, result has 23.5 percent of original size [2023-02-16 00:07:16,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 93 treesize of output 104 [2023-02-16 00:07:17,142 INFO L321 Elim1Store]: treesize reduction 316, result has 23.1 percent of original size [2023-02-16 00:07:17,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 129 [2023-02-16 00:07:17,440 INFO L321 Elim1Store]: treesize reduction 402, result has 21.2 percent of original size [2023-02-16 00:07:17,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 145 [2023-02-16 00:07:17,733 INFO L321 Elim1Store]: treesize reduction 374, result has 14.0 percent of original size [2023-02-16 00:07:17,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 100 treesize of output 120 [2023-02-16 00:08:28,834 INFO L321 Elim1Store]: treesize reduction 812, result has 10.6 percent of original size [2023-02-16 00:08:28,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 54 case distinctions, treesize of input 129 treesize of output 139 [2023-02-16 00:08:32,051 INFO L321 Elim1Store]: treesize reduction 418, result has 0.7 percent of original size [2023-02-16 00:08:32,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 110 treesize of output 34 [2023-02-16 00:08:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 225 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:08:32,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:11,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1053 treesize of output 1035 [2023-02-16 00:09:14,492 INFO L321 Elim1Store]: treesize reduction 228, result has 21.1 percent of original size [2023-02-16 00:09:14,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input -8152956387249113225 treesize of output -8152956387249113165