./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/mbpr5.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 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 22:46:33,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 22:46:33,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 22:46:33,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 22:46:33,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 22:46:33,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 22:46:33,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 22:46:33,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 22:46:33,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 22:46:33,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 22:46:33,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 22:46:33,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 22:46:33,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 22:46:33,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 22:46:33,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 22:46:33,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 22:46:33,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 22:46:33,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 22:46:33,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 22:46:33,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 22:46:33,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 22:46:33,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 22:46:33,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 22:46:33,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 22:46:33,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 22:46:33,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 22:46:33,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 22:46:33,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 22:46:33,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 22:46:33,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 22:46:33,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 22:46:33,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 22:46:33,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 22:46:33,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 22:46:33,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 22:46:33,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 22:46:33,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 22:46:33,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 22:46:33,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 22:46:33,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 22:46:33,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 22:46:33,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 22:46:33,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 22:46:33,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 22:46:33,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 22:46:33,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 22:46:33,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 22:46:33,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 22:46:33,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 22:46:33,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 22:46:33,517 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 22:46:33,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 22:46:33,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 22:46:33,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 22:46:33,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 22:46:33,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 22:46:33,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 22:46:33,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 22:46:33,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 22:46:33,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 22:46:33,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 22:46:33,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 22:46:33,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 22:46:33,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 22:46:33,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 22:46:33,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 22:46:33,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 22:46:33,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 22:46:33,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 22:46:33,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 22:46:33,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 22:46:33,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 22:46:33,523 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 22:46:33,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 22:46:33,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 22:46:33,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 22:46:33,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b [2021-12-16 22:46:33,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 22:46:33,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 22:46:33,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 22:46:33,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 22:46:33,787 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 22:46:33,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr5.c [2021-12-16 22:46:33,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15fafd8b2/951a44abf4b24163867228ac98d43388/FLAG0623748dc [2021-12-16 22:46:34,203 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 22:46:34,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr5.c [2021-12-16 22:46:34,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15fafd8b2/951a44abf4b24163867228ac98d43388/FLAG0623748dc [2021-12-16 22:46:34,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15fafd8b2/951a44abf4b24163867228ac98d43388 [2021-12-16 22:46:34,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 22:46:34,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 22:46:34,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 22:46:34,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 22:46:34,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 22:46:34,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:34,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a2b017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34, skipping insertion in model container [2021-12-16 22:46:34,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:34,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 22:46:34,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 22:46:34,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr5.c[396,409] [2021-12-16 22:46:34,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 22:46:34,842 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 22:46:34,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr5.c[396,409] [2021-12-16 22:46:34,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 22:46:34,898 INFO L208 MainTranslator]: Completed translation [2021-12-16 22:46:34,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34 WrapperNode [2021-12-16 22:46:34,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 22:46:34,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 22:46:34,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 22:46:34,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 22:46:34,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:34,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:34,971 INFO L137 Inliner]: procedures = 15, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 173 [2021-12-16 22:46:34,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 22:46:34,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 22:46:34,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 22:46:34,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 22:46:34,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:34,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:34,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:34,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:35,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:35,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:35,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:35,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 22:46:35,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 22:46:35,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 22:46:35,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 22:46:35,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (1/1) ... [2021-12-16 22:46:35,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 22:46:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:35,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 22:46:35,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 22:46:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 22:46:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 22:46:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 22:46:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 22:46:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 22:46:35,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 22:46:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 22:46:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 22:46:35,157 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 22:46:35,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 22:46:35,456 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 22:46:35,465 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 22:46:35,466 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-16 22:46:35,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:46:35 BoogieIcfgContainer [2021-12-16 22:46:35,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 22:46:35,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 22:46:35,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 22:46:35,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 22:46:35,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:46:34" (1/3) ... [2021-12-16 22:46:35,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2bdfd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:46:35, skipping insertion in model container [2021-12-16 22:46:35,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:46:34" (2/3) ... [2021-12-16 22:46:35,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2bdfd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:46:35, skipping insertion in model container [2021-12-16 22:46:35,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:46:35" (3/3) ... [2021-12-16 22:46:35,489 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2021-12-16 22:46:35,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 22:46:35,495 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 22:46:35,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 22:46:35,544 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 22:46:35,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 22:46:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 22:46:35,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:35,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:46:35,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1087925893, now seen corresponding path program 1 times [2021-12-16 22:46:35,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:35,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812199380] [2021-12-16 22:46:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:35,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:46:35,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812199380] [2021-12-16 22:46:35,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812199380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 22:46:35,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 22:46:35,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 22:46:35,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062464209] [2021-12-16 22:46:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 22:46:35,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 22:46:35,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 22:46:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 22:46:35,834 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:35,858 INFO L93 Difference]: Finished difference Result 83 states and 122 transitions. [2021-12-16 22:46:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 22:46:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-16 22:46:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:35,867 INFO L225 Difference]: With dead ends: 83 [2021-12-16 22:46:35,868 INFO L226 Difference]: Without dead ends: 39 [2021-12-16 22:46:35,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 22:46:35,876 INFO L933 BasicCegarLoop]: 57 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, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:35,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 22:46:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-16 22:46:35,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-16 22:46:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2021-12-16 22:46:35,913 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 21 [2021-12-16 22:46:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:35,913 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2021-12-16 22:46:35,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2021-12-16 22:46:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 22:46:35,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:35,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:46:35,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 22:46:35,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:35,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:35,921 INFO L85 PathProgramCache]: Analyzing trace with hash -30028973, now seen corresponding path program 1 times [2021-12-16 22:46:35,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:35,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275915048] [2021-12-16 22:46:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:35,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:46:36,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:36,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275915048] [2021-12-16 22:46:36,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275915048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 22:46:36,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 22:46:36,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 22:46:36,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185957999] [2021-12-16 22:46:36,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 22:46:36,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 22:46:36,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 22:46:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 22:46:36,065 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:36,107 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-12-16 22:46:36,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 22:46:36,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-16 22:46:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:36,111 INFO L225 Difference]: With dead ends: 48 [2021-12-16 22:46:36,111 INFO L226 Difference]: Without dead ends: 46 [2021-12-16 22:46:36,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 22:46:36,116 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:36,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 140 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 22:46:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-16 22:46:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-12-16 22:46:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-12-16 22:46:36,122 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 21 [2021-12-16 22:46:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:36,123 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-12-16 22:46:36,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-12-16 22:46:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 22:46:36,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:36,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:46:36,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 22:46:36,129 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:36,130 INFO L85 PathProgramCache]: Analyzing trace with hash -29969391, now seen corresponding path program 1 times [2021-12-16 22:46:36,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:36,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729596180] [2021-12-16 22:46:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:36,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:46:36,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:36,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729596180] [2021-12-16 22:46:36,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729596180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 22:46:36,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 22:46:36,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 22:46:36,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407422558] [2021-12-16 22:46:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 22:46:36,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 22:46:36,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 22:46:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 22:46:36,348 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:36,507 INFO L93 Difference]: Finished difference Result 92 states and 122 transitions. [2021-12-16 22:46:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 22:46:36,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-16 22:46:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:36,509 INFO L225 Difference]: With dead ends: 92 [2021-12-16 22:46:36,509 INFO L226 Difference]: Without dead ends: 61 [2021-12-16 22:46:36,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 22:46:36,510 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:36,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 25 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 22:46:36,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-16 22:46:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2021-12-16 22:46:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2021-12-16 22:46:36,518 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2021-12-16 22:46:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:36,518 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2021-12-16 22:46:36,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2021-12-16 22:46:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 22:46:36,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:36,520 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-12-16 22:46:36,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 22:46:36,520 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash -175217928, now seen corresponding path program 1 times [2021-12-16 22:46:36,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:36,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823436211] [2021-12-16 22:46:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:36,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:36,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:36,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823436211] [2021-12-16 22:46:36,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823436211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 22:46:36,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 22:46:36,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 22:46:36,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697202506] [2021-12-16 22:46:36,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 22:46:36,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 22:46:36,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 22:46:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 22:46:36,626 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:36,643 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-12-16 22:46:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 22:46:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-16 22:46:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:36,644 INFO L225 Difference]: With dead ends: 61 [2021-12-16 22:46:36,645 INFO L226 Difference]: Without dead ends: 46 [2021-12-16 22:46:36,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 22:46:36,646 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:36,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 22:46:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-16 22:46:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-12-16 22:46:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2021-12-16 22:46:36,653 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 41 [2021-12-16 22:46:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2021-12-16 22:46:36,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2021-12-16 22:46:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 22:46:36,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:36,655 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-12-16 22:46:36,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 22:46:36,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:36,657 INFO L85 PathProgramCache]: Analyzing trace with hash -568244938, now seen corresponding path program 1 times [2021-12-16 22:46:36,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:36,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913255356] [2021-12-16 22:46:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:36,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:46:37,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:37,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913255356] [2021-12-16 22:46:37,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913255356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:46:37,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169760423] [2021-12-16 22:46:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:37,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:37,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:46:37,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 22:46:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:37,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-16 22:46:37,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:46:37,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:46:37,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:46:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:37,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-12-16 22:46:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 38 [2021-12-16 22:46:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:37,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 38 [2021-12-16 22:46:37,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:37,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 38 [2021-12-16 22:46:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:37,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:37,983 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 22:46:37,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-12-16 22:46:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:46:38,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:46:38,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-12-16 22:46:38,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2021-12-16 22:46:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:38,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169760423] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:46:38,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:46:38,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 23 [2021-12-16 22:46:38,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195483176] [2021-12-16 22:46:38,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:46:38,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-16 22:46:38,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:38,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-16 22:46:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-12-16 22:46:38,797 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:39,520 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2021-12-16 22:46:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 22:46:39,520 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-16 22:46:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:39,521 INFO L225 Difference]: With dead ends: 126 [2021-12-16 22:46:39,521 INFO L226 Difference]: Without dead ends: 87 [2021-12-16 22:46:39,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 71 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2021-12-16 22:46:39,523 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 285 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:39,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 110 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 22:46:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-16 22:46:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 48. [2021-12-16 22:46:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-12-16 22:46:39,529 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 41 [2021-12-16 22:46:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:39,530 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-12-16 22:46:39,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-12-16 22:46:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-16 22:46:39,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:39,532 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:46:39,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 22:46:39,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:39,752 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:39,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1692770569, now seen corresponding path program 1 times [2021-12-16 22:46:39,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:39,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207299667] [2021-12-16 22:46:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:39,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:46:39,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:39,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207299667] [2021-12-16 22:46:39,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207299667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:46:39,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580342439] [2021-12-16 22:46:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:39,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:39,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:46:40,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 22:46:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:40,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-16 22:46:40,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:46:40,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:46:40,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:46:40,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:40,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2021-12-16 22:46:40,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2021-12-16 22:46:40,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:40,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2021-12-16 22:46:40,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2021-12-16 22:46:40,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:40,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2021-12-16 22:46:40,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:40,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2021-12-16 22:46:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 22:46:40,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:46:41,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-12-16 22:46:41,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-12-16 22:46:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:41,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580342439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:46:41,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:46:41,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2021-12-16 22:46:41,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488558069] [2021-12-16 22:46:41,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:46:41,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-16 22:46:41,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:41,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-16 22:46:41,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-16 22:46:41,324 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:42,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:42,108 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2021-12-16 22:46:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 22:46:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-12-16 22:46:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:42,110 INFO L225 Difference]: With dead ends: 119 [2021-12-16 22:46:42,110 INFO L226 Difference]: Without dead ends: 84 [2021-12-16 22:46:42,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 81 SyntacticMatches, 13 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2021-12-16 22:46:42,111 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 340 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:42,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 120 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 22:46:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-16 22:46:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2021-12-16 22:46:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-12-16 22:46:42,117 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 47 [2021-12-16 22:46:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:42,117 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-12-16 22:46:42,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-12-16 22:46:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 22:46:42,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:42,118 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:46:42,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 22:46:42,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 22:46:42,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:42,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:42,336 INFO L85 PathProgramCache]: Analyzing trace with hash 964465308, now seen corresponding path program 2 times [2021-12-16 22:46:42,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:42,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785790311] [2021-12-16 22:46:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:42,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 22:46:42,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:42,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785790311] [2021-12-16 22:46:42,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785790311] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:46:42,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683520857] [2021-12-16 22:46:42,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 22:46:42,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:42,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:42,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:46:42,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 22:46:42,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 22:46:42,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:46:42,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-16 22:46:42,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:46:42,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:46:42,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:42,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:46:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:43,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 68 [2021-12-16 22:46:43,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 41 [2021-12-16 22:46:43,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:43,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2021-12-16 22:46:43,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:43,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2021-12-16 22:46:43,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 22:46:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 22:46:43,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:46:43,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:46:43,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-16 22:46:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:43,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683520857] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:46:43,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:46:43,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2021-12-16 22:46:43,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802613461] [2021-12-16 22:46:43,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:46:43,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 22:46:43,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 22:46:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-12-16 22:46:43,695 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:44,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:44,274 INFO L93 Difference]: Finished difference Result 156 states and 184 transitions. [2021-12-16 22:46:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 22:46:44,274 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-16 22:46:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:44,276 INFO L225 Difference]: With dead ends: 156 [2021-12-16 22:46:44,276 INFO L226 Difference]: Without dead ends: 121 [2021-12-16 22:46:44,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 22:46:44,277 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 248 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:44,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 139 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 22:46:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-16 22:46:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 60. [2021-12-16 22:46:44,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-12-16 22:46:44,285 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 53 [2021-12-16 22:46:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:44,285 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-12-16 22:46:44,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-12-16 22:46:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 22:46:44,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:44,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:46:44,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 22:46:44,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:44,504 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:44,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:44,504 INFO L85 PathProgramCache]: Analyzing trace with hash -477181457, now seen corresponding path program 3 times [2021-12-16 22:46:44,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:44,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526500498] [2021-12-16 22:46:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:44,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 22:46:44,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:44,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526500498] [2021-12-16 22:46:44,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526500498] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:46:44,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144241403] [2021-12-16 22:46:44,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 22:46:44,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:44,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:46:44,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 22:46:45,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-16 22:46:45,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:46:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-16 22:46:45,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:46:45,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:46:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:46:45,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:46:45,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 73 [2021-12-16 22:46:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:45,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 41 [2021-12-16 22:46:45,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 22:46:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 22:46:45,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:46:45,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:46:45,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-16 22:46:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:46,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144241403] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:46:46,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:46:46,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-12-16 22:46:46,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700045831] [2021-12-16 22:46:46,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:46:46,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 22:46:46,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 22:46:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-12-16 22:46:46,044 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:46,630 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2021-12-16 22:46:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 22:46:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-12-16 22:46:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:46,632 INFO L225 Difference]: With dead ends: 146 [2021-12-16 22:46:46,632 INFO L226 Difference]: Without dead ends: 111 [2021-12-16 22:46:46,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=1147, Unknown=0, NotChecked=0, Total=1406 [2021-12-16 22:46:46,634 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 206 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:46,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 205 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 22:46:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-16 22:46:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2021-12-16 22:46:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-12-16 22:46:46,641 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 59 [2021-12-16 22:46:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:46,642 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-12-16 22:46:46,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-12-16 22:46:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 22:46:46,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:46,643 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2021-12-16 22:46:46,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 22:46:46,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:46,847 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -712968446, now seen corresponding path program 4 times [2021-12-16 22:46:46,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936809688] [2021-12-16 22:46:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:46,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 22:46:47,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936809688] [2021-12-16 22:46:47,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936809688] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:46:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409247850] [2021-12-16 22:46:47,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 22:46:47,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:47,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:47,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:46:47,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 22:46:47,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 22:46:47,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:46:47,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-16 22:46:47,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:46:47,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:46:47,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2021-12-16 22:46:47,285 INFO L354 Elim1Store]: treesize reduction 584, result has 8.3 percent of original size [2021-12-16 22:46:47,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 94 [2021-12-16 22:46:47,317 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-12-16 22:46:47,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 45 [2021-12-16 22:46:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:47,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:46:47,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:46:47,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-12-16 22:46:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:47,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409247850] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:46:47,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:46:47,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 17 [2021-12-16 22:46:47,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573859523] [2021-12-16 22:46:47,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:46:47,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 22:46:47,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 22:46:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-16 22:46:47,621 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:48,058 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2021-12-16 22:46:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 22:46:48,058 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-16 22:46:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:48,059 INFO L225 Difference]: With dead ends: 116 [2021-12-16 22:46:48,059 INFO L226 Difference]: Without dead ends: 114 [2021-12-16 22:46:48,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2021-12-16 22:46:48,060 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 136 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:48,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 178 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 22:46:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-16 22:46:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 72. [2021-12-16 22:46:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-12-16 22:46:48,066 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 65 [2021-12-16 22:46:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:48,066 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-12-16 22:46:48,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-12-16 22:46:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 22:46:48,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:48,067 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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, 1, 1, 1] [2021-12-16 22:46:48,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 22:46:48,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:48,268 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:48,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:48,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1869859285, now seen corresponding path program 5 times [2021-12-16 22:46:48,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:48,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692411135] [2021-12-16 22:46:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:48,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:46:48,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:48,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692411135] [2021-12-16 22:46:48,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692411135] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:46:48,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81557999] [2021-12-16 22:46:48,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 22:46:48,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:48,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:48,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:46:48,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 22:46:53,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-16 22:46:53,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:46:53,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 22:46:53,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:46:53,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:46:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:46:54,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:46:54,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 22:46:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 22:46:54,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:46:54,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:46:54,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-16 22:46:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 22:46:54,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81557999] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:46:54,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:46:54,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2021-12-16 22:46:54,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160573694] [2021-12-16 22:46:54,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:46:54,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-16 22:46:54,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:46:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-16 22:46:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-12-16 22:46:54,612 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 30 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:46:55,626 INFO L93 Difference]: Finished difference Result 236 states and 261 transitions. [2021-12-16 22:46:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 22:46:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 30 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-16 22:46:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:46:55,627 INFO L225 Difference]: With dead ends: 236 [2021-12-16 22:46:55,627 INFO L226 Difference]: Without dead ends: 121 [2021-12-16 22:46:55,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=2036, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 22:46:55,629 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 566 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 22:46:55,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 384 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 22:46:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-16 22:46:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 92. [2021-12-16 22:46:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0769230769230769) internal successors, (98), 91 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2021-12-16 22:46:55,636 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 71 [2021-12-16 22:46:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:46:55,637 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2021-12-16 22:46:55,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 30 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:46:55,637 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2021-12-16 22:46:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 22:46:55,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:46:55,638 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 22:46:55,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 22:46:55,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:55,850 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:46:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:46:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1771668984, now seen corresponding path program 6 times [2021-12-16 22:46:55,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:46:55,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104866223] [2021-12-16 22:46:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:46:55,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:46:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:46:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 98 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 22:46:56,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:46:56,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104866223] [2021-12-16 22:46:56,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104866223] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:46:56,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164897721] [2021-12-16 22:46:56,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 22:46:56,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:46:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:46:56,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:46:56,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 22:46:58,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-16 22:46:58,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:46:59,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-16 22:46:59,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:46:59,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:46:59,234 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-16 22:46:59,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2021-12-16 22:46:59,314 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:46:59,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:46:59,383 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-16 22:46:59,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:46:59,435 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:46:59,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:46:59,507 INFO L354 Elim1Store]: treesize reduction 479, result has 11.5 percent of original size [2021-12-16 22:46:59,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 80 [2021-12-16 22:46:59,688 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:46:59,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:46:59,744 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-16 22:46:59,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:46:59,813 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:46:59,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:46:59,850 INFO L354 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2021-12-16 22:46:59,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 43 [2021-12-16 22:46:59,912 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:46:59,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:46:59,968 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-16 22:46:59,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:47:00,034 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:47:00,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:00,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-16 22:47:00,138 INFO L354 Elim1Store]: treesize reduction 979, result has 6.1 percent of original size [2021-12-16 22:47:00,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 140 treesize of output 127 [2021-12-16 22:47:00,156 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-16 22:47:00,171 INFO L354 Elim1Store]: treesize reduction 108, result has 0.9 percent of original size [2021-12-16 22:47:00,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 43 [2021-12-16 22:47:00,328 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:47:00,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:00,374 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-16 22:47:00,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:47:00,426 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:47:00,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:00,465 INFO L354 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2021-12-16 22:47:00,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 43 [2021-12-16 22:47:00,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 22:47:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:47:00,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:47:02,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-12-16 22:47:02,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98718 treesize of output 98206 [2021-12-16 22:47:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 94 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:47:06,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164897721] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:47:06,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:47:06,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 25] total 57 [2021-12-16 22:47:06,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017620053] [2021-12-16 22:47:06,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:47:06,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-16 22:47:06,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:47:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-16 22:47:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2725, Unknown=0, NotChecked=0, Total=3192 [2021-12-16 22:47:06,659 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 57 states, 57 states have (on average 4.543859649122807) internal successors, (259), 57 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:47:12,259 INFO L93 Difference]: Finished difference Result 573 states and 612 transitions. [2021-12-16 22:47:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-12-16 22:47:12,259 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.543859649122807) internal successors, (259), 57 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 22:47:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:47:12,261 INFO L225 Difference]: With dead ends: 573 [2021-12-16 22:47:12,261 INFO L226 Difference]: Without dead ends: 563 [2021-12-16 22:47:12,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 193 SyntacticMatches, 55 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11244 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3149, Invalid=24241, Unknown=0, NotChecked=0, Total=27390 [2021-12-16 22:47:12,270 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 905 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 510 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 22:47:12,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 606 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1525 Invalid, 0 Unknown, 510 Unchecked, 0.9s Time] [2021-12-16 22:47:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-12-16 22:47:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 217. [2021-12-16 22:47:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.0833333333333333) internal successors, (234), 216 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 234 transitions. [2021-12-16 22:47:12,298 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 234 transitions. Word has length 91 [2021-12-16 22:47:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:47:12,298 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 234 transitions. [2021-12-16 22:47:12,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.543859649122807) internal successors, (259), 57 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 234 transitions. [2021-12-16 22:47:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-16 22:47:12,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:47:12,303 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 22:47:12,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 22:47:12,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:47:12,521 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:47:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:47:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 463915083, now seen corresponding path program 7 times [2021-12-16 22:47:12,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:47:12,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347635154] [2021-12-16 22:47:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:47:12,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:47:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:47:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:47:13,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:47:13,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347635154] [2021-12-16 22:47:13,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347635154] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:47:13,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006332153] [2021-12-16 22:47:13,145 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-16 22:47:13,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:47:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:47:13,147 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:47:13,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 22:47:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:47:13,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 137 conjunts are in the unsatisfiable core [2021-12-16 22:47:13,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:47:13,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:47:13,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-16 22:47:13,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 49 [2021-12-16 22:47:13,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:13,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,681 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 22:47:13,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2021-12-16 22:47:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:47:13,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-16 22:47:13,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-16 22:47:13,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:13,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:47:13,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:47:13,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2021-12-16 22:47:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2021-12-16 22:47:13,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:13,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:13,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 22:47:13,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2021-12-16 22:47:14,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:47:14,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-16 22:47:14,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:14,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-16 22:47:14,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 22:47:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 126 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 22:47:14,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:47:20,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:47:20,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-16 22:47:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 22:47:20,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006332153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:47:20,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:47:20,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 15] total 42 [2021-12-16 22:47:20,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981103706] [2021-12-16 22:47:20,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:47:20,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-16 22:47:20,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:47:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-16 22:47:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-12-16 22:47:20,275 INFO L87 Difference]: Start difference. First operand 217 states and 234 transitions. Second operand has 42 states, 42 states have (on average 6.380952380952381) internal successors, (268), 42 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:47:27,569 INFO L93 Difference]: Finished difference Result 1390 states and 1536 transitions. [2021-12-16 22:47:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2021-12-16 22:47:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.380952380952381) internal successors, (268), 42 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-16 22:47:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:47:27,575 INFO L225 Difference]: With dead ends: 1390 [2021-12-16 22:47:27,575 INFO L226 Difference]: Without dead ends: 1380 [2021-12-16 22:47:27,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 196 SyntacticMatches, 33 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13502 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=3384, Invalid=32906, Unknown=0, NotChecked=0, Total=36290 [2021-12-16 22:47:27,585 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 2040 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 2949 mSolverCounterSat, 1723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 4939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1723 IncrementalHoareTripleChecker+Valid, 2949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 22:47:27,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2040 Valid, 555 Invalid, 4939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1723 Valid, 2949 Invalid, 0 Unknown, 267 Unchecked, 1.9s Time] [2021-12-16 22:47:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2021-12-16 22:47:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 231. [2021-12-16 22:47:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.0869565217391304) internal successors, (250), 230 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 250 transitions. [2021-12-16 22:47:27,611 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 250 transitions. Word has length 97 [2021-12-16 22:47:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:47:27,611 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 250 transitions. [2021-12-16 22:47:27,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.380952380952381) internal successors, (268), 42 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 250 transitions. [2021-12-16 22:47:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-16 22:47:27,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:47:27,613 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-16 22:47:27,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 22:47:27,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-16 22:47:27,824 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:47:27,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:47:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash 163561198, now seen corresponding path program 8 times [2021-12-16 22:47:27,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:47:27,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077073654] [2021-12-16 22:47:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:47:27,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:47:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:47:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-16 22:47:27,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:47:27,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077073654] [2021-12-16 22:47:27,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077073654] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:47:27,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200555616] [2021-12-16 22:47:27,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 22:47:27,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:47:27,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:47:27,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:47:27,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 22:47:28,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 22:47:28,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:47:28,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 22:47:28,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:47:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-16 22:47:28,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:47:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-16 22:47:28,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200555616] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:47:28,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:47:28,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-16 22:47:28,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407326576] [2021-12-16 22:47:28,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:47:28,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 22:47:28,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:47:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 22:47:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-16 22:47:28,746 INFO L87 Difference]: Start difference. First operand 231 states and 250 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:47:29,148 INFO L93 Difference]: Finished difference Result 477 states and 514 transitions. [2021-12-16 22:47:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 22:47:29,148 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-16 22:47:29,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:47:29,149 INFO L225 Difference]: With dead ends: 477 [2021-12-16 22:47:29,149 INFO L226 Difference]: Without dead ends: 333 [2021-12-16 22:47:29,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-12-16 22:47:29,150 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 207 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 22:47:29,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 139 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 22:47:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-16 22:47:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 254. [2021-12-16 22:47:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.075098814229249) internal successors, (272), 253 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 272 transitions. [2021-12-16 22:47:29,170 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 272 transitions. Word has length 99 [2021-12-16 22:47:29,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:47:29,170 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 272 transitions. [2021-12-16 22:47:29,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 272 transitions. [2021-12-16 22:47:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 22:47:29,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:47:29,172 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 22:47:29,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 22:47:29,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 22:47:29,376 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:47:29,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:47:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash -773865378, now seen corresponding path program 9 times [2021-12-16 22:47:29,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:47:29,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332815636] [2021-12-16 22:47:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:47:29,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:47:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:47:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 14 proven. 169 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 22:47:30,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:47:30,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332815636] [2021-12-16 22:47:30,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332815636] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:47:30,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962920507] [2021-12-16 22:47:30,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 22:47:30,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:47:30,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:47:30,105 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:47:30,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 22:47:33,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-16 22:47:33,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:47:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-16 22:47:33,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:47:33,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:47:33,537 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-16 22:47:33,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2021-12-16 22:47:33,597 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:47:33,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:33,645 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-16 22:47:33,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:47:33,682 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-12-16 22:47:33,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:47:33,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-12-16 22:47:33,718 INFO L354 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2021-12-16 22:47:33,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 199 treesize of output 190 [2021-12-16 22:47:33,769 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:47:33,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:33,813 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-16 22:47:33,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:47:33,851 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-12-16 22:47:33,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:47:33,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 67 [2021-12-16 22:47:33,927 INFO L354 Elim1Store]: treesize reduction 374, result has 10.3 percent of original size [2021-12-16 22:47:33,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 162 treesize of output 154 [2021-12-16 22:47:33,953 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-16 22:47:33,976 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-16 22:47:33,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 34 [2021-12-16 22:47:34,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 22:47:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 14 proven. 158 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 22:47:34,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:47:45,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:47:45,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-16 22:47:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 22:47:45,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962920507] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:47:45,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:47:45,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 16] total 44 [2021-12-16 22:47:45,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602118099] [2021-12-16 22:47:45,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:47:45,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-16 22:47:45,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:47:45,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-16 22:47:45,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-12-16 22:47:45,318 INFO L87 Difference]: Start difference. First operand 254 states and 272 transitions. Second operand has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:47:48,885 INFO L93 Difference]: Finished difference Result 586 states and 648 transitions. [2021-12-16 22:47:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-16 22:47:48,885 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-16 22:47:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:47:48,887 INFO L225 Difference]: With dead ends: 586 [2021-12-16 22:47:48,887 INFO L226 Difference]: Without dead ends: 576 [2021-12-16 22:47:48,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 202 SyntacticMatches, 15 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3650 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=1305, Invalid=11351, Unknown=0, NotChecked=0, Total=12656 [2021-12-16 22:47:48,890 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 1232 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 22:47:48,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 549 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 2825 Invalid, 0 Unknown, 143 Unchecked, 1.4s Time] [2021-12-16 22:47:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-16 22:47:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 260. [2021-12-16 22:47:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0733590733590734) internal successors, (278), 259 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 278 transitions. [2021-12-16 22:47:48,910 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 278 transitions. Word has length 103 [2021-12-16 22:47:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:47:48,910 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 278 transitions. [2021-12-16 22:47:48,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:47:48,911 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 278 transitions. [2021-12-16 22:47:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 22:47:48,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:47:48,912 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 22:47:48,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 22:47:49,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-16 22:47:49,121 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:47:49,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:47:49,122 INFO L85 PathProgramCache]: Analyzing trace with hash -191553999, now seen corresponding path program 10 times [2021-12-16 22:47:49,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:47:49,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341054193] [2021-12-16 22:47:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:47:49,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:47:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:47:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 202 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 22:47:49,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:47:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341054193] [2021-12-16 22:47:49,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341054193] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:47:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456679052] [2021-12-16 22:47:49,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 22:47:49,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:47:49,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:47:49,528 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:47:49,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 22:47:49,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 22:47:49,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:47:49,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-16 22:47:49,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:47:50,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:47:50,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2021-12-16 22:47:50,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:47:50,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-16 22:47:50,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-16 22:47:50,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:47:50,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 59 [2021-12-16 22:47:50,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:47:50,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2021-12-16 22:47:50,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 22:47:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 22:47:50,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:47:59,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:47:59,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-16 22:47:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 194 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-16 22:47:59,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456679052] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:47:59,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:47:59,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 45 [2021-12-16 22:47:59,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382393014] [2021-12-16 22:47:59,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:47:59,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-16 22:47:59,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:47:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-16 22:47:59,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2021-12-16 22:47:59,765 INFO L87 Difference]: Start difference. First operand 260 states and 278 transitions. Second operand has 45 states, 45 states have (on average 6.266666666666667) internal successors, (282), 45 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:48:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:48:02,489 INFO L93 Difference]: Finished difference Result 551 states and 611 transitions. [2021-12-16 22:48:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-16 22:48:02,489 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.266666666666667) internal successors, (282), 45 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-16 22:48:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:48:02,491 INFO L225 Difference]: With dead ends: 551 [2021-12-16 22:48:02,491 INFO L226 Difference]: Without dead ends: 541 [2021-12-16 22:48:02,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 204 SyntacticMatches, 8 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=845, Invalid=7165, Unknown=0, NotChecked=0, Total=8010 [2021-12-16 22:48:02,493 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 964 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 22:48:02,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 475 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2740 Invalid, 0 Unknown, 62 Unchecked, 1.3s Time] [2021-12-16 22:48:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-12-16 22:48:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 266. [2021-12-16 22:48:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.0716981132075472) internal successors, (284), 265 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:48:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2021-12-16 22:48:02,515 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 109 [2021-12-16 22:48:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:48:02,516 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2021-12-16 22:48:02,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.266666666666667) internal successors, (282), 45 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:48:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2021-12-16 22:48:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 22:48:02,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:48:02,517 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:48:02,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 22:48:02,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-16 22:48:02,723 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:48:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:48:02,724 INFO L85 PathProgramCache]: Analyzing trace with hash -338305443, now seen corresponding path program 11 times [2021-12-16 22:48:02,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:48:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716913140] [2021-12-16 22:48:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:48:02,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:48:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:48:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-16 22:48:02,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:48:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716913140] [2021-12-16 22:48:02,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716913140] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:48:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731404916] [2021-12-16 22:48:02,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 22:48:02,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:48:02,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:48:02,924 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:48:02,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 22:52:53,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-16 22:52:53,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:52:53,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 22:52:53,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:52:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-16 22:52:54,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:52:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-16 22:52:54,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731404916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:52:54,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:52:54,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-16 22:52:54,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239931845] [2021-12-16 22:52:54,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:52:54,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 22:52:54,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:52:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 22:52:54,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-16 22:52:54,394 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:52:55,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:52:55,133 INFO L93 Difference]: Finished difference Result 603 states and 642 transitions. [2021-12-16 22:52:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-16 22:52:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-16 22:52:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:52:55,135 INFO L225 Difference]: With dead ends: 603 [2021-12-16 22:52:55,135 INFO L226 Difference]: Without dead ends: 397 [2021-12-16 22:52:55,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2021-12-16 22:52:55,136 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 665 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 22:52:55,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 187 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 22:52:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-16 22:52:55,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 283. [2021-12-16 22:52:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.049645390070922) internal successors, (296), 282 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:52:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 296 transitions. [2021-12-16 22:52:55,177 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 296 transitions. Word has length 111 [2021-12-16 22:52:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:52:55,178 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 296 transitions. [2021-12-16 22:52:55,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:52:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 296 transitions. [2021-12-16 22:52:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 22:52:55,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:52:55,179 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:52:55,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-16 22:52:55,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 22:52:55,393 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:52:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:52:55,393 INFO L85 PathProgramCache]: Analyzing trace with hash 114210653, now seen corresponding path program 12 times [2021-12-16 22:52:55,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:52:55,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420547457] [2021-12-16 22:52:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:52:55,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:52:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:52:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:52:57,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:52:57,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420547457] [2021-12-16 22:52:57,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420547457] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:52:57,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657474916] [2021-12-16 22:52:57,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 22:52:57,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:52:57,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:52:57,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:52:57,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 22:53:00,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-16 22:53:00,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:53:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 317 conjunts are in the unsatisfiable core [2021-12-16 22:53:00,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:53:00,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:53:00,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:53:00,570 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-12-16 22:53:00,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2021-12-16 22:53:00,672 INFO L354 Elim1Store]: treesize reduction 696, result has 7.4 percent of original size [2021-12-16 22:53:00,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 74 [2021-12-16 22:53:00,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,824 INFO L354 Elim1Store]: treesize reduction 34, result has 27.7 percent of original size [2021-12-16 22:53:00,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 44 [2021-12-16 22:53:00,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:00,891 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:00,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 80 [2021-12-16 22:53:01,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,262 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:01,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:01,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2021-12-16 22:53:01,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,371 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-12-16 22:53:01,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 59 [2021-12-16 22:53:01,490 INFO L354 Elim1Store]: treesize reduction 80, result has 20.0 percent of original size [2021-12-16 22:53:01,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:01,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2021-12-16 22:53:01,716 INFO L354 Elim1Store]: treesize reduction 1403, result has 6.1 percent of original size [2021-12-16 22:53:01,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 154 treesize of output 163 [2021-12-16 22:53:01,824 INFO L354 Elim1Store]: treesize reduction 245, result has 0.4 percent of original size [2021-12-16 22:53:01,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 62 [2021-12-16 22:53:01,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:01,994 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:01,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:02,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,055 INFO L354 Elim1Store]: treesize reduction 64, result has 36.0 percent of original size [2021-12-16 22:53:02,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 96 [2021-12-16 22:53:02,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,567 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:02,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:02,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2021-12-16 22:53:02,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:02,672 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-12-16 22:53:02,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 59 [2021-12-16 22:53:02,862 INFO L354 Elim1Store]: treesize reduction 80, result has 20.0 percent of original size [2021-12-16 22:53:02,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:02,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2021-12-16 22:53:03,165 INFO L354 Elim1Store]: treesize reduction 1403, result has 6.1 percent of original size [2021-12-16 22:53:03,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 154 treesize of output 163 [2021-12-16 22:53:03,248 INFO L354 Elim1Store]: treesize reduction 245, result has 0.4 percent of original size [2021-12-16 22:53:03,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 50 [2021-12-16 22:53:03,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,379 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:03,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:03,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2021-12-16 22:53:03,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,468 INFO L354 Elim1Store]: treesize reduction 111, result has 15.3 percent of original size [2021-12-16 22:53:03,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 80 [2021-12-16 22:53:03,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,712 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:03,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:03,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2021-12-16 22:53:03,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 22:53:03,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:03,818 INFO L354 Elim1Store]: treesize reduction 60, result has 16.7 percent of original size [2021-12-16 22:53:03,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 73 [2021-12-16 22:53:04,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,114 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:04,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:04,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2021-12-16 22:53:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,244 INFO L354 Elim1Store]: treesize reduction 111, result has 15.3 percent of original size [2021-12-16 22:53:04,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 80 [2021-12-16 22:53:04,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,499 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:04,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:04,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2021-12-16 22:53:04,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,590 INFO L354 Elim1Store]: treesize reduction 111, result has 15.3 percent of original size [2021-12-16 22:53:04,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 80 [2021-12-16 22:53:04,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:04,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,001 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:05,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:05,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2021-12-16 22:53:05,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 22:53:05,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,127 INFO L354 Elim1Store]: treesize reduction 78, result has 13.3 percent of original size [2021-12-16 22:53:05,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 73 [2021-12-16 22:53:05,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,387 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-16 22:53:05,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-12-16 22:53:05,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 98 [2021-12-16 22:53:05,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,538 INFO L354 Elim1Store]: treesize reduction 73, result has 14.1 percent of original size [2021-12-16 22:53:05,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 95 [2021-12-16 22:53:05,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 22:53:05,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 53 [2021-12-16 22:53:05,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 144 [2021-12-16 22:53:05,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:05,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 89 [2021-12-16 22:53:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:53:07,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:53:12,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2021-12-16 22:53:12,905 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-16 22:53:12,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 378 treesize of output 350 [2021-12-16 22:53:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 22:53:13,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657474916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:53:13,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:53:13,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 39, 28] total 90 [2021-12-16 22:53:13,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563832006] [2021-12-16 22:53:13,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:53:13,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-12-16 22:53:13,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:53:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-12-16 22:53:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=781, Invalid=7227, Unknown=2, NotChecked=0, Total=8010 [2021-12-16 22:53:13,245 INFO L87 Difference]: Start difference. First operand 283 states and 296 transitions. Second operand has 90 states, 90 states have (on average 3.566666666666667) internal successors, (321), 90 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:53:21,301 INFO L93 Difference]: Finished difference Result 522 states and 547 transitions. [2021-12-16 22:53:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-12-16 22:53:21,302 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.566666666666667) internal successors, (321), 90 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-16 22:53:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:53:21,304 INFO L225 Difference]: With dead ends: 522 [2021-12-16 22:53:21,304 INFO L226 Difference]: Without dead ends: 494 [2021-12-16 22:53:21,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 160 SyntacticMatches, 72 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17691 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=3629, Invalid=36569, Unknown=2, NotChecked=0, Total=40200 [2021-12-16 22:53:21,308 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 391 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1921 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 22:53:21,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 954 Invalid, 3665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1607 Invalid, 0 Unknown, 1921 Unchecked, 0.9s Time] [2021-12-16 22:53:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-12-16 22:53:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 399. [2021-12-16 22:53:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.050251256281407) internal successors, (418), 398 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 418 transitions. [2021-12-16 22:53:21,339 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 418 transitions. Word has length 111 [2021-12-16 22:53:21,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:53:21,339 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 418 transitions. [2021-12-16 22:53:21,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.566666666666667) internal successors, (321), 90 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 418 transitions. [2021-12-16 22:53:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 22:53:21,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:53:21,340 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 22:53:21,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 22:53:21,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-16 22:53:21,541 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:53:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:53:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1194094140, now seen corresponding path program 13 times [2021-12-16 22:53:21,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:53:21,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151504004] [2021-12-16 22:53:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:53:21,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:53:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:53:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 22:53:21,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:53:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151504004] [2021-12-16 22:53:21,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151504004] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:53:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733809764] [2021-12-16 22:53:21,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-16 22:53:21,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:53:21,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:53:21,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:53:21,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 22:53:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:53:22,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-16 22:53:22,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:53:22,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:53:22,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-16 22:53:22,355 INFO L354 Elim1Store]: treesize reduction 644, result has 8.1 percent of original size [2021-12-16 22:53:22,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 102 [2021-12-16 22:53:22,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-16 22:53:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:22,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 40 [2021-12-16 22:53:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 22:53:22,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:53:22,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 22:53:22,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-12-16 22:53:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 22:53:22,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733809764] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:53:22,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:53:22,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 28 [2021-12-16 22:53:22,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135180084] [2021-12-16 22:53:22,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:53:22,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-16 22:53:22,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:53:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-16 22:53:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-12-16 22:53:22,979 INFO L87 Difference]: Start difference. First operand 399 states and 418 transitions. Second operand has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:53:24,618 INFO L93 Difference]: Finished difference Result 495 states and 522 transitions. [2021-12-16 22:53:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-16 22:53:24,618 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-12-16 22:53:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:53:24,619 INFO L225 Difference]: With dead ends: 495 [2021-12-16 22:53:24,619 INFO L226 Difference]: Without dead ends: 493 [2021-12-16 22:53:24,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 215 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=564, Invalid=4838, Unknown=0, NotChecked=0, Total=5402 [2021-12-16 22:53:24,621 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 243 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 2737 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 22:53:24,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 562 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2737 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 22:53:24,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-16 22:53:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 339. [2021-12-16 22:53:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0591715976331362) internal successors, (358), 338 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 358 transitions. [2021-12-16 22:53:24,655 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 358 transitions. Word has length 115 [2021-12-16 22:53:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:53:24,655 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 358 transitions. [2021-12-16 22:53:24,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 358 transitions. [2021-12-16 22:53:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 22:53:24,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:53:24,656 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 22:53:24,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 22:53:24,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:53:24,868 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:53:24,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:53:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1553741033, now seen corresponding path program 14 times [2021-12-16 22:53:24,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:53:24,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624467381] [2021-12-16 22:53:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:53:24,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:53:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:53:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 255 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 22:53:25,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:53:25,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624467381] [2021-12-16 22:53:25,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624467381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:53:25,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009814779] [2021-12-16 22:53:25,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 22:53:25,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:53:25,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:53:25,327 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) [2021-12-16 22:53:25,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 22:53:25,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 22:53:25,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:53:25,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-16 22:53:25,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:53:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 310 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 22:53:26,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:53:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 310 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 22:53:27,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009814779] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 22:53:27,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 22:53:27,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 51 [2021-12-16 22:53:27,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174079532] [2021-12-16 22:53:27,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 22:53:27,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-16 22:53:27,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 22:53:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-16 22:53:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1903, Unknown=0, NotChecked=0, Total=2550 [2021-12-16 22:53:27,165 INFO L87 Difference]: Start difference. First operand 339 states and 358 transitions. Second operand has 51 states, 51 states have (on average 5.921568627450981) internal successors, (302), 51 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 22:53:27,789 INFO L93 Difference]: Finished difference Result 423 states and 444 transitions. [2021-12-16 22:53:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 22:53:27,789 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.921568627450981) internal successors, (302), 51 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-12-16 22:53:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 22:53:27,790 INFO L225 Difference]: With dead ends: 423 [2021-12-16 22:53:27,790 INFO L226 Difference]: Without dead ends: 311 [2021-12-16 22:53:27,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=808, Invalid=2498, Unknown=0, NotChecked=0, Total=3306 [2021-12-16 22:53:27,791 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 840 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 22:53:27,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 428 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 22:53:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-12-16 22:53:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 308. [2021-12-16 22:53:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.0618892508143323) internal successors, (326), 307 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 326 transitions. [2021-12-16 22:53:27,821 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 326 transitions. Word has length 121 [2021-12-16 22:53:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 22:53:27,822 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 326 transitions. [2021-12-16 22:53:27,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.921568627450981) internal successors, (302), 51 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 22:53:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 326 transitions. [2021-12-16 22:53:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-16 22:53:27,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 22:53:27,823 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 22:53:27,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 22:53:28,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:53:28,051 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 22:53:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 22:53:28,051 INFO L85 PathProgramCache]: Analyzing trace with hash 739344450, now seen corresponding path program 15 times [2021-12-16 22:53:28,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 22:53:28,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146053678] [2021-12-16 22:53:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 22:53:28,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 22:53:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 22:53:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 11 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 22:53:30,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 22:53:30,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146053678] [2021-12-16 22:53:30,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146053678] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 22:53:30,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171287389] [2021-12-16 22:53:30,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 22:53:30,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 22:53:30,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 22:53:30,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 22:53:30,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 22:53:57,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-16 22:53:57,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 22:53:57,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 202 conjunts are in the unsatisfiable core [2021-12-16 22:53:57,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 22:53:57,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-16 22:53:57,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2021-12-16 22:53:57,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-16 22:53:57,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2021-12-16 22:53:57,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:57,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:58,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:53:58,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:58,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:53:58,268 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:53:58,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:58,343 INFO L354 Elim1Store]: treesize reduction 479, result has 11.5 percent of original size [2021-12-16 22:53:58,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 80 [2021-12-16 22:53:58,429 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:53:58,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:58,483 INFO L354 Elim1Store]: treesize reduction 474, result has 9.9 percent of original size [2021-12-16 22:53:58,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2021-12-16 22:53:58,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-12-16 22:53:58,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,701 INFO L354 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2021-12-16 22:53:58,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 73 [2021-12-16 22:53:58,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:58,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:58,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:53:59,035 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:53:59,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:59,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-16 22:53:59,149 INFO L354 Elim1Store]: treesize reduction 968, result has 7.2 percent of original size [2021-12-16 22:53:59,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 140 treesize of output 138 [2021-12-16 22:53:59,188 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-12-16 22:53:59,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 49 [2021-12-16 22:53:59,239 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:53:59,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:59,322 INFO L354 Elim1Store]: treesize reduction 474, result has 9.9 percent of original size [2021-12-16 22:53:59,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2021-12-16 22:53:59,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-12-16 22:53:59,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,425 INFO L354 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2021-12-16 22:53:59,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 73 [2021-12-16 22:53:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:59,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:53:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:59,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 22:53:59,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 22:53:59,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 64 [2021-12-16 22:53:59,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:59,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:53:59,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:53:59,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:53:59,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-16 22:54:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:54:00,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-16 22:54:00,135 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:54:00,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:54:00,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-16 22:54:00,245 INFO L354 Elim1Store]: treesize reduction 968, result has 7.2 percent of original size [2021-12-16 22:54:00,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 140 treesize of output 138 [2021-12-16 22:54:00,276 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-12-16 22:54:00,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 52 [2021-12-16 22:54:00,318 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-16 22:54:00,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-16 22:54:00,403 INFO L354 Elim1Store]: treesize reduction 474, result has 9.9 percent of original size [2021-12-16 22:54:00,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2021-12-16 22:54:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-12-16 22:54:00,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 192 [2021-12-16 22:54:00,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 22:54:00,568 INFO L354 Elim1Store]: treesize reduction 48, result has 15.8 percent of original size [2021-12-16 22:54:00,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 67 [2021-12-16 22:54:01,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 22:54:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 10 proven. 198 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 22:54:01,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 22:56:23,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 187