./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array20_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array20_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 10:45:49,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:45:49,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:45:49,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:45:49,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:45:49,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:45:49,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:45:49,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:45:49,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:45:49,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:45:49,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:45:49,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:45:49,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:45:49,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:45:49,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:45:49,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:45:49,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:45:49,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:45:49,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:45:49,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:45:49,491 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:45:49,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:45:49,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:45:49,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:45:49,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:45:49,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:45:49,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:45:49,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:45:49,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:45:49,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:45:49,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:45:49,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:45:49,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:45:49,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:45:49,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:45:49,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:45:49,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:45:49,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:45:49,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:45:49,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:45:49,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:45:49,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:45:49,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:45:49,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:45:49,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:45:49,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:45:49,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:45:49,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:45:49,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:45:49,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:45:49,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:45:49,545 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:45:49,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:45:49,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:45:49,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:45:49,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:45:49,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:45:49,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:45:49,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:45:49,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:45:49,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:45:49,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:45:49,549 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:45:49,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:45:49,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:45:49,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:45:49,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:45:49,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:45:49,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:45:49,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:45:49,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:45:49,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:45:49,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:45:49,551 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:45:49,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:45:49,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:45:49,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2022-07-13 10:45:49,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:45:49,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:45:49,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:45:49,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:45:49,811 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:45:49,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array20_pattern.c [2022-07-13 10:45:49,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b568adcc4/1b7ede078e3945b89bd5f52b52e02bd4/FLAG23142f66b [2022-07-13 10:45:50,224 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:45:50,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array20_pattern.c [2022-07-13 10:45:50,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b568adcc4/1b7ede078e3945b89bd5f52b52e02bd4/FLAG23142f66b [2022-07-13 10:45:50,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b568adcc4/1b7ede078e3945b89bd5f52b52e02bd4 [2022-07-13 10:45:50,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:45:50,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:45:50,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:45:50,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:45:50,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:45:50,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc7579e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50, skipping insertion in model container [2022-07-13 10:45:50,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:45:50,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:45:50,442 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-07-13 10:45:50,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:45:50,491 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:45:50,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-07-13 10:45:50,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:45:50,542 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:45:50,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50 WrapperNode [2022-07-13 10:45:50,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:45:50,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:45:50,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:45:50,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:45:50,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,594 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-07-13 10:45:50,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:45:50,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:45:50,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:45:50,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:45:50,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:45:50,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:45:50,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:45:50,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:45:50,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (1/1) ... [2022-07-13 10:45:50,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:45:50,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:45:50,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 10:45:50,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 10:45:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:45:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 10:45:50,717 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 10:45:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:45:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:45:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:45:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:45:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:45:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:45:50,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:45:50,771 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:45:50,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:45:50,920 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:45:50,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:45:50,925 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 10:45:50,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:45:50 BoogieIcfgContainer [2022-07-13 10:45:50,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:45:50,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:45:50,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:45:50,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:45:50,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:45:50" (1/3) ... [2022-07-13 10:45:50,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610112b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:45:50, skipping insertion in model container [2022-07-13 10:45:50,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:50" (2/3) ... [2022-07-13 10:45:50,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610112b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:45:50, skipping insertion in model container [2022-07-13 10:45:50,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:45:50" (3/3) ... [2022-07-13 10:45:50,942 INFO L111 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2022-07-13 10:45:50,962 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:45:50,963 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:45:50,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:45:51,003 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a522df7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a740388 [2022-07-13 10:45:51,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:45:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:45:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 10:45:51,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:45:51,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:45:51,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:45:51,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:45:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-07-13 10:45:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:45:51,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721342010] [2022-07-13 10:45:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:45:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:45:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:45:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:45:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:45:51,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:45:51,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721342010] [2022-07-13 10:45:51,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721342010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:45:51,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:45:51,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:45:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274211201] [2022-07-13 10:45:51,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:45:51,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:45:51,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:45:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:45:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:45:51,198 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:45:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:45:51,216 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-07-13 10:45:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:45:51,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-13 10:45:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:45:51,221 INFO L225 Difference]: With dead ends: 63 [2022-07-13 10:45:51,221 INFO L226 Difference]: Without dead ends: 29 [2022-07-13 10:45:51,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:45:51,226 INFO L413 NwaCegarLoop]: 41 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, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:45:51,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:45:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-13 10:45:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-13 10:45:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:45:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-07-13 10:45:51,251 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-07-13 10:45:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:45:51,252 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-07-13 10:45:51,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:45:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-07-13 10:45:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 10:45:51,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:45:51,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:45:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:45:51,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:45:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:45:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-07-13 10:45:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:45:51,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508575818] [2022-07-13 10:45:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:45:51,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:45:51,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019102926] [2022-07-13 10:45:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:51,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:45:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:45:51,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:45:51,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:45:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:45:51,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 10:45:51,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:45:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:45:51,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:45:51,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:45:51,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508575818] [2022-07-13 10:45:51,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:45:51,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019102926] [2022-07-13 10:45:51,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019102926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:45:51,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:45:51,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:45:51,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306687043] [2022-07-13 10:45:51,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:45:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:45:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:45:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:45:51,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:45:51,516 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:45:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:45:51,559 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-07-13 10:45:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:45:51,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-07-13 10:45:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:45:51,560 INFO L225 Difference]: With dead ends: 36 [2022-07-13 10:45:51,561 INFO L226 Difference]: Without dead ends: 32 [2022-07-13 10:45:51,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:45:51,562 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:45:51,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:45:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-13 10:45:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-13 10:45:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:45:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-13 10:45:51,568 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-07-13 10:45:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:45:51,569 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-13 10:45:51,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:45:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-13 10:45:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 10:45:51,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:45:51,571 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:45:51,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:45:51,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:45:51,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:45:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:45:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-07-13 10:45:51,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:45:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163425931] [2022-07-13 10:45:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:45:51,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:45:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509693790] [2022-07-13 10:45:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:51,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:45:51,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:45:51,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:45:51,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:45:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:45:51,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:45:51,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:45:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:45:51,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:45:51,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:45:51,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163425931] [2022-07-13 10:45:51,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:45:51,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509693790] [2022-07-13 10:45:51,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509693790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:45:51,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:45:51,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:45:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288712090] [2022-07-13 10:45:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:45:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:45:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:45:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:45:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:45:51,924 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:45:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:45:51,999 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-07-13 10:45:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 10:45:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-07-13 10:45:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:45:52,000 INFO L225 Difference]: With dead ends: 67 [2022-07-13 10:45:52,001 INFO L226 Difference]: Without dead ends: 42 [2022-07-13 10:45:52,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:45:52,002 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:45:52,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 80 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:45:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-13 10:45:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-07-13 10:45:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:45:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-07-13 10:45:52,009 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2022-07-13 10:45:52,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:45:52,009 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-07-13 10:45:52,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:45:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-07-13 10:45:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 10:45:52,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:45:52,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:45:52,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:45:52,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 10:45:52,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:45:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:45:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-07-13 10:45:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:45:52,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475388480] [2022-07-13 10:45:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:45:52,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:45:52,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931774369] [2022-07-13 10:45:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:52,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:45:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:45:52,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:45:52,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:45:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:45:52,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:45:52,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:45:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:45:52,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:45:52,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:45:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475388480] [2022-07-13 10:45:52,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:45:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931774369] [2022-07-13 10:45:52,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931774369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:45:52,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:45:52,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:45:52,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003972324] [2022-07-13 10:45:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:45:52,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:45:52,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:45:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:45:52,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:45:52,348 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:45:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:45:52,406 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-07-13 10:45:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:45:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-07-13 10:45:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:45:52,410 INFO L225 Difference]: With dead ends: 64 [2022-07-13 10:45:52,410 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 10:45:52,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:45:52,412 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:45:52,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 51 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:45:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 10:45:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-07-13 10:45:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:45:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-07-13 10:45:52,418 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2022-07-13 10:45:52,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:45:52,419 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-07-13 10:45:52,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:45:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-07-13 10:45:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 10:45:52,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:45:52,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:45:52,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 10:45:52,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:45:52,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:45:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:45:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-07-13 10:45:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:45:52,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985998602] [2022-07-13 10:45:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:52,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:45:52,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:45:52,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492035952] [2022-07-13 10:45:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:45:52,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:45:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:45:52,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:45:52,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 10:45:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:45:52,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-13 10:45:52,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:45:53,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 142 [2022-07-13 10:45:53,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:53,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:53,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:53,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 649 [2022-07-13 10:45:53,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:53,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:53,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:53,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:53,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:53,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:53,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:53,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 493 [2022-07-13 10:45:54,080 INFO L390 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 521 treesize of output 505 [2022-07-13 10:45:54,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:54,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 505 [2022-07-13 10:45:54,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:54,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:45:54,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:45:54,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 16 [2022-07-13 10:45:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 10:45:54,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:45:54,499 INFO L390 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 32 treesize of output 30 [2022-07-13 10:45:54,505 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-07-13 10:45:54,515 INFO L390 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 30 treesize of output 28 [2022-07-13 10:45:54,523 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2022-07-13 10:45:54,531 INFO L390 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 29 [2022-07-13 10:45:54,540 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:45:54,555 INFO L390 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 29 treesize of output 27 [2022-07-13 10:45:54,564 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-13 10:45:54,584 INFO L390 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 32 treesize of output 30 [2022-07-13 10:45:54,594 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-07-13 10:45:54,608 INFO L390 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 34 treesize of output 32 [2022-07-13 10:45:54,618 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2022-07-13 10:45:54,632 INFO L390 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 29 [2022-07-13 10:45:54,642 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:45:54,667 INFO L390 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 33 treesize of output 31 [2022-07-13 10:45:54,678 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:45:54,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2022-07-13 10:46:02,790 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 184 DAG size of output: 120 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-13 10:46:02,794 INFO L356 Elim1Store]: treesize reduction 1295, result has 25.1 percent of original size [2022-07-13 10:46:02,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 351 treesize of output 584 [2022-07-13 10:48:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:48:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:48:52,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985998602] [2022-07-13 10:48:52,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:48:52,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492035952] [2022-07-13 10:48:52,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492035952] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:48:52,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:48:52,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-07-13 10:48:52,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132212892] [2022-07-13 10:48:52,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:48:52,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 10:48:52,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:48:52,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 10:48:52,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=800, Unknown=1, NotChecked=0, Total=930 [2022-07-13 10:48:52,289 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 31 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 10:49:05,678 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 66 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:49:15,986 WARN L233 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 69 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:49:33,523 WARN L233 SmtUtils]: Spent 16.61s on a formula simplification. DAG size of input: 86 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:49:54,917 WARN L233 SmtUtils]: Spent 18.37s on a formula simplification. DAG size of input: 100 DAG size of output: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:50:06,082 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:50:14,881 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:50:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:29,623 INFO L93 Difference]: Finished difference Result 200 states and 262 transitions. [2022-07-13 10:50:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-13 10:50:29,624 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 40 [2022-07-13 10:50:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:29,627 INFO L225 Difference]: With dead ends: 200 [2022-07-13 10:50:29,627 INFO L226 Difference]: Without dead ends: 168 [2022-07-13 10:50:29,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 108.6s TimeCoverageRelationStatistics Valid=687, Invalid=4424, Unknown=1, NotChecked=0, Total=5112 [2022-07-13 10:50:29,630 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 270 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 395 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 772 Invalid, 0 Unknown, 199 Unchecked, 5.7s Time] [2022-07-13 10:50:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-13 10:50:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 76. [2022-07-13 10:50:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-13 10:50:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2022-07-13 10:50:29,664 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 40 [2022-07-13 10:50:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:29,666 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2022-07-13 10:50:29,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 10:50:29,667 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2022-07-13 10:50:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 10:50:29,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:29,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:29,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:29,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2022-07-13 10:50:29,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:29,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958704051] [2022-07-13 10:50:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:29,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:29,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640127213] [2022-07-13 10:50:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:29,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:29,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:50:29,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 10:50:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:29,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 10:50:29,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:50:30,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:50:30,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:30,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958704051] [2022-07-13 10:50:30,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:30,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640127213] [2022-07-13 10:50:30,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640127213] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:30,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:30,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2022-07-13 10:50:30,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930655186] [2022-07-13 10:50:30,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:30,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 10:50:30,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:30,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 10:50:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-13 10:50:30,280 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-13 10:50:30,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:30,749 INFO L93 Difference]: Finished difference Result 204 states and 253 transitions. [2022-07-13 10:50:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 10:50:30,752 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2022-07-13 10:50:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:30,753 INFO L225 Difference]: With dead ends: 204 [2022-07-13 10:50:30,753 INFO L226 Difference]: Without dead ends: 145 [2022-07-13 10:50:30,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-07-13 10:50:30,754 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 164 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:30,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 172 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 10:50:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-13 10:50:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 86. [2022-07-13 10:50:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 72 states have internal predecessors, (86), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-13 10:50:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2022-07-13 10:50:30,781 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 40 [2022-07-13 10:50:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:30,782 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2022-07-13 10:50:30,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-13 10:50:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2022-07-13 10:50:30,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 10:50:30,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:30,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:30,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:31,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:31,002 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:31,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-07-13 10:50:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:31,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220763903] [2022-07-13 10:50:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:31,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:31,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:31,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076738903] [2022-07-13 10:50:31,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:50:31,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:31,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:31,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:50:31,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 10:50:31,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:50:31,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:31,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 10:50:31,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:31,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:50:31,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:31,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220763903] [2022-07-13 10:50:31,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:31,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076738903] [2022-07-13 10:50:31,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076738903] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:31,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:31,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-13 10:50:31,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224236030] [2022-07-13 10:50:31,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:31,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 10:50:31,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:31,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 10:50:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 10:50:31,217 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 10:50:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:31,365 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2022-07-13 10:50:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 10:50:31,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-07-13 10:50:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:31,367 INFO L225 Difference]: With dead ends: 152 [2022-07-13 10:50:31,367 INFO L226 Difference]: Without dead ends: 143 [2022-07-13 10:50:31,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:50:31,369 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 141 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:31,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 112 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:50:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-07-13 10:50:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2022-07-13 10:50:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-13 10:50:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2022-07-13 10:50:31,388 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 42 [2022-07-13 10:50:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:31,389 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2022-07-13 10:50:31,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 10:50:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2022-07-13 10:50:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 10:50:31,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:31,390 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:31,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:31,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:31,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:31,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2022-07-13 10:50:31,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:31,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441860025] [2022-07-13 10:50:31,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:31,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:31,615 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:31,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696720121] [2022-07-13 10:50:31,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:50:31,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:31,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:31,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:50:31,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 10:50:31,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 10:50:31,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:31,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-13 10:50:31,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:31,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 142 [2022-07-13 10:50:31,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 651