./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array23_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/array23_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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 10:06:18,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 10:06:18,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 10:06:18,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 10:06:18,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 10:06:18,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 10:06:18,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 10:06:18,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 10:06:18,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 10:06:18,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 10:06:18,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 10:06:18,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 10:06:18,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 10:06:18,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 10:06:18,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 10:06:18,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 10:06:18,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 10:06:18,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 10:06:18,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 10:06:18,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 10:06:18,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 10:06:18,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 10:06:18,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 10:06:18,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 10:06:18,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 10:06:18,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 10:06:18,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 10:06:18,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 10:06:18,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 10:06:18,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 10:06:18,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 10:06:18,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 10:06:18,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 10:06:18,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 10:06:18,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 10:06:18,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 10:06:18,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 10:06:18,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 10:06:18,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 10:06:18,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 10:06:18,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 10:06:18,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 10:06:18,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 10:06:18,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 10:06:18,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 10:06:18,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 10:06:18,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 10:06:18,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 10:06:18,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 10:06:18,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 10:06:18,629 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 10:06:18,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 10:06:18,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 10:06:18,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 10:06:18,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 10:06:18,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 10:06:18,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 10:06:18,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 10:06:18,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 10:06:18,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 10:06:18,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 10:06:18,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 10:06:18,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 10:06:18,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 10:06:18,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 10:06:18,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 10:06:18,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 10:06:18,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 10:06:18,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 10:06:18,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 10:06:18,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 10:06:18,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 10:06:18,633 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 10:06:18,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 10:06:18,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 10:06:18,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 10:06:18,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2021-12-21 10:06:18,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 10:06:18,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 10:06:18,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 10:06:18,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 10:06:18,862 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 10:06:18,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array23_pattern.c [2021-12-21 10:06:18,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea7830cd/c1e2b959bb8f4128bc88ed248d5dbc71/FLAG7beb13dfa [2021-12-21 10:06:19,247 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 10:06:19,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array23_pattern.c [2021-12-21 10:06:19,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea7830cd/c1e2b959bb8f4128bc88ed248d5dbc71/FLAG7beb13dfa [2021-12-21 10:06:19,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea7830cd/c1e2b959bb8f4128bc88ed248d5dbc71 [2021-12-21 10:06:19,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 10:06:19,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 10:06:19,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 10:06:19,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 10:06:19,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 10:06:19,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abdc1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19, skipping insertion in model container [2021-12-21 10:06:19,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 10:06:19,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 10:06:19,377 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/array23_pattern.c[1347,1360] [2021-12-21 10:06:19,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 10:06:19,394 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 10:06:19,401 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/array23_pattern.c[1347,1360] [2021-12-21 10:06:19,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 10:06:19,424 INFO L208 MainTranslator]: Completed translation [2021-12-21 10:06:19,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19 WrapperNode [2021-12-21 10:06:19,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 10:06:19,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 10:06:19,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 10:06:19,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 10:06:19,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,462 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2021-12-21 10:06:19,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 10:06:19,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 10:06:19,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 10:06:19,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 10:06:19,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 10:06:19,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 10:06:19,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 10:06:19,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 10:06:19,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (1/1) ... [2021-12-21 10:06:19,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 10:06:19,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:19,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 10:06:19,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 10:06:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-12-21 10:06:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-12-21 10:06:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 10:06:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 10:06:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 10:06:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 10:06:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 10:06:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 10:06:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 10:06:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 10:06:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 10:06:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 10:06:19,643 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 10:06:19,644 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 10:06:19,780 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 10:06:19,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 10:06:19,784 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-21 10:06:19,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:19 BoogieIcfgContainer [2021-12-21 10:06:19,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 10:06:19,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 10:06:19,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 10:06:19,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 10:06:19,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:06:19" (1/3) ... [2021-12-21 10:06:19,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf63b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:19, skipping insertion in model container [2021-12-21 10:06:19,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:19" (2/3) ... [2021-12-21 10:06:19,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf63b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:19, skipping insertion in model container [2021-12-21 10:06:19,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:19" (3/3) ... [2021-12-21 10:06:19,791 INFO L111 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2021-12-21 10:06:19,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 10:06:19,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 10:06:19,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 10:06:19,825 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 10:06:19,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 10:06:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 10:06:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 10:06:19,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:19,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:19,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2021-12-21 10:06:19,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:19,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23417598] [2021-12-21 10:06:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:19,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 10:06:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 10:06:19,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23417598] [2021-12-21 10:06:19,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23417598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:06:19,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:06:19,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 10:06:19,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895506334] [2021-12-21 10:06:19,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:06:19,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 10:06:19,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 10:06:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 10:06:20,007 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 10:06:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:20,028 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2021-12-21 10:06:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 10:06:20,030 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 [2021-12-21 10:06:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:20,035 INFO L225 Difference]: With dead ends: 79 [2021-12-21 10:06:20,036 INFO L226 Difference]: Without dead ends: 37 [2021-12-21 10:06:20,044 INFO L932 BasicCegarLoop]: 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 [2021-12-21 10:06:20,048 INFO L933 BasicCegarLoop]: 51 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, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:20,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:06:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-21 10:06:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-21 10:06:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 10:06:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-12-21 10:06:20,095 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2021-12-21 10:06:20,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:20,095 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-12-21 10:06:20,095 INFO L471 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) [2021-12-21 10:06:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-12-21 10:06:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 10:06:20,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:20,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:20,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 10:06:20,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:20,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2021-12-21 10:06:20,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:20,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113560269] [2021-12-21 10:06:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:20,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:20,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:20,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882086626] [2021-12-21 10:06:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:20,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:20,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:20,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 10:06:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:20,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 10:06:20,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 10:06:20,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 10:06:20,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:20,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113560269] [2021-12-21 10:06:20,385 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:20,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882086626] [2021-12-21 10:06:20,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882086626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:06:20,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:06:20,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 10:06:20,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616499642] [2021-12-21 10:06:20,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:06:20,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 10:06:20,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:20,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 10:06:20,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 10:06:20,390 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 10:06:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:20,409 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-12-21 10:06:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 10:06:20,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-21 10:06:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:20,413 INFO L225 Difference]: With dead ends: 44 [2021-12-21 10:06:20,413 INFO L226 Difference]: Without dead ends: 40 [2021-12-21 10:06:20,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 10:06:20,414 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 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 [2021-12-21 10:06:20,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:06:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-21 10:06:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-21 10:06:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 10:06:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-12-21 10:06:20,422 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2021-12-21 10:06:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:20,423 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-12-21 10:06:20,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 10:06:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2021-12-21 10:06:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-21 10:06:20,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:20,424 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:20,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 10:06:20,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:20,645 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2021-12-21 10:06:20,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:20,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661418158] [2021-12-21 10:06:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:20,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:20,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:20,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92500871] [2021-12-21 10:06:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:20,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:20,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:20,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 10:06:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:20,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 10:06:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 10:06:20,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 10:06:20,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:20,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661418158] [2021-12-21 10:06:20,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:20,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92500871] [2021-12-21 10:06:20,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92500871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:06:20,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:06:20,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 10:06:20,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083802274] [2021-12-21 10:06:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:06:20,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 10:06:20,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 10:06:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 10:06:20,864 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-12-21 10:06:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:20,928 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-12-21 10:06:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 10:06:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 47 [2021-12-21 10:06:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:20,929 INFO L225 Difference]: With dead ends: 83 [2021-12-21 10:06:20,929 INFO L226 Difference]: Without dead ends: 50 [2021-12-21 10:06:20,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 10:06:20,930 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:20,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 128 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:06:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-21 10:06:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-12-21 10:06:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 10:06:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-12-21 10:06:20,946 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2021-12-21 10:06:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:20,947 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-12-21 10:06:20,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-12-21 10:06:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-12-21 10:06:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-21 10:06:20,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:20,950 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:20,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 10:06:21,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 10:06:21,163 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2021-12-21 10:06:21,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:21,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811206762] [2021-12-21 10:06:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:21,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:21,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:21,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141694002] [2021-12-21 10:06:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:21,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:21,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:21,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:21,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 10:06:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:21,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 10:06:21,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-21 10:06:21,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 10:06:21,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811206762] [2021-12-21 10:06:21,324 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141694002] [2021-12-21 10:06:21,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141694002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:06:21,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:06:21,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 10:06:21,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5438850] [2021-12-21 10:06:21,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:06:21,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 10:06:21,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 10:06:21,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 10:06:21,326 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-12-21 10:06:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:21,356 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2021-12-21 10:06:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 10:06:21,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 50 [2021-12-21 10:06:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:21,357 INFO L225 Difference]: With dead ends: 80 [2021-12-21 10:06:21,357 INFO L226 Difference]: Without dead ends: 44 [2021-12-21 10:06:21,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 10:06:21,358 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 77 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 [2021-12-21 10:06:21,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 77 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:06:21,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-21 10:06:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-12-21 10:06:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 10:06:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-12-21 10:06:21,362 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2021-12-21 10:06:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:21,363 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-12-21 10:06:21,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-12-21 10:06:21,363 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-12-21 10:06:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 10:06:21,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:21,364 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:21,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 10:06:21,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:21,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2021-12-21 10:06:21,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480186929] [2021-12-21 10:06:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:21,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:21,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:21,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454204454] [2021-12-21 10:06:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:21,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:21,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:21,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:21,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 10:06:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:21,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 10:06:21,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-21 10:06:21,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 10:06:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 10:06:21,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480186929] [2021-12-21 10:06:21,817 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454204454] [2021-12-21 10:06:21,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454204454] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 10:06:21,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 10:06:21,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-12-21 10:06:21,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605353184] [2021-12-21 10:06:21,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 10:06:21,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 10:06:21,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 10:06:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-21 10:06:21,820 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 10:06:21,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:21,916 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2021-12-21 10:06:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 10:06:21,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2021-12-21 10:06:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:21,917 INFO L225 Difference]: With dead ends: 87 [2021-12-21 10:06:21,917 INFO L226 Difference]: Without dead ends: 51 [2021-12-21 10:06:21,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-21 10:06:21,918 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:21,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 92 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 10:06:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-21 10:06:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-12-21 10:06:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 10:06:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-12-21 10:06:21,923 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2021-12-21 10:06:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:21,923 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-12-21 10:06:21,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 10:06:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-12-21 10:06:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 10:06:21,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:21,924 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:21,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 10:06:22,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:22,127 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2021-12-21 10:06:22,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:22,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891557372] [2021-12-21 10:06:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:22,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:22,137 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:22,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129504249] [2021-12-21 10:06:22,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 10:06:22,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:22,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:22,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:22,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 10:06:22,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 10:06:22,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 10:06:22,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 10:06:22,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 10:06:22,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 10:06:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 10:06:22,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891557372] [2021-12-21 10:06:22,398 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129504249] [2021-12-21 10:06:22,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129504249] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 10:06:22,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 10:06:22,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-21 10:06:22,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838820983] [2021-12-21 10:06:22,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 10:06:22,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 10:06:22,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 10:06:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-21 10:06:22,400 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 10:06:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:22,518 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2021-12-21 10:06:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 10:06:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2021-12-21 10:06:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:22,519 INFO L225 Difference]: With dead ends: 108 [2021-12-21 10:06:22,519 INFO L226 Difference]: Without dead ends: 75 [2021-12-21 10:06:22,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-21 10:06:22,520 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:22,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 151 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 10:06:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-21 10:06:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-12-21 10:06:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 10:06:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-12-21 10:06:22,526 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2021-12-21 10:06:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:22,526 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-12-21 10:06:22,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 10:06:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-12-21 10:06:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-21 10:06:22,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:22,527 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:22,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-21 10:06:22,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:22,743 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2021-12-21 10:06:22,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:22,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784585866] [2021-12-21 10:06:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:22,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:22,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:22,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104446421] [2021-12-21 10:06:22,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 10:06:22,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:22,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:22,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 10:06:23,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-21 10:06:23,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 10:06:23,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-21 10:06:23,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:23,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2021-12-21 10:06:23,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-21 10:06:23,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-21 10:06:23,794 INFO L387 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 74 treesize of output 67 [2021-12-21 10:06:23,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:23,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:23,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 10:06:23,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 90 [2021-12-21 10:06:23,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:23,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:23,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 7 [2021-12-21 10:06:24,009 INFO L387 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 77 treesize of output 68 [2021-12-21 10:06:24,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 89 [2021-12-21 10:06:24,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-12-21 10:06:24,162 INFO L387 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 96 treesize of output 85 [2021-12-21 10:06:24,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 126 [2021-12-21 10:06:24,181 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:24,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:24,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 39 [2021-12-21 10:06:25,209 INFO L387 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 108 treesize of output 95 [2021-12-21 10:06:25,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,337 INFO L353 Elim1Store]: treesize reduction 187, result has 44.2 percent of original size [2021-12-21 10:06:25,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 245 [2021-12-21 10:06:25,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:25,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:25,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 10:06:25,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 130 [2021-12-21 10:06:32,248 INFO L387 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 298 treesize of output 279 [2021-12-21 10:06:32,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:32,701 INFO L353 Elim1Store]: treesize reduction 294, result has 41.0 percent of original size [2021-12-21 10:06:32,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 25 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 282 treesize of output 614 [2021-12-21 10:06:32,883 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:32,962 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:33,127 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:33,336 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:33,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:33,595 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:06:34,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,454 INFO L244 Elim1Store]: Index analysis took 107 ms [2021-12-21 10:06:34,589 INFO L353 Elim1Store]: treesize reduction 79, result has 47.3 percent of original size [2021-12-21 10:06:34,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 413 treesize of output 398 [2021-12-21 10:06:34,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,865 INFO L353 Elim1Store]: treesize reduction 91, result has 1.1 percent of original size [2021-12-21 10:06:34,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 327 treesize of output 253 [2021-12-21 10:06:34,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:34,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:35,046 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 10:06:35,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 312 [2021-12-21 10:06:47,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 10:06:47,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 10:06:47,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 10:06:47,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 10:06:47,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 10:06:47,721 INFO L353 Elim1Store]: treesize reduction 198, result has 56.9 percent of original size [2021-12-21 10:06:47,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 13 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 272 treesize of output 320 [2021-12-21 10:06:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 10:06:49,034 INFO L328 TraceCheckSpWp]: Computing backward predicates...