./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array17_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/array17_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 1bbdbab39b20ef0f9bb51ea0fb71bf773586866898cf5babc34262381f9b9103 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 10:05:28,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 10:05:28,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 10:05:28,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 10:05:28,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 10:05:28,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 10:05:28,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 10:05:28,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 10:05:28,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 10:05:28,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 10:05:28,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 10:05:28,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 10:05:28,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 10:05:28,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 10:05:28,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 10:05:28,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 10:05:28,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 10:05:28,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 10:05:28,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 10:05:28,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 10:05:28,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 10:05:28,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 10:05:28,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 10:05:28,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 10:05:28,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 10:05:28,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 10:05:28,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 10:05:28,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 10:05:28,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 10:05:28,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 10:05:28,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 10:05:28,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 10:05:28,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 10:05:28,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 10:05:28,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 10:05:28,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 10:05:28,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 10:05:28,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 10:05:28,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 10:05:28,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 10:05:28,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 10:05:28,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 10:05:28,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 10:05:28,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 10:05:28,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 10:05:28,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 10:05:28,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 10:05:28,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 10:05:28,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 10:05:28,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 10:05:28,556 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 10:05:28,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 10:05:28,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 10:05:28,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 10:05:28,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 10:05:28,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 10:05:28,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 10:05:28,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 10:05:28,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 10:05:28,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 10:05:28,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 10:05:28,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 10:05:28,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 10:05:28,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 10:05:28,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 10:05:28,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 10:05:28,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 10:05:28,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 10:05:28,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 10:05:28,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 10:05:28,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 10:05:28,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 10:05:28,565 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 10:05:28,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 10:05:28,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 10:05:28,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 10:05:28,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bbdbab39b20ef0f9bb51ea0fb71bf773586866898cf5babc34262381f9b9103 [2021-12-21 10:05:28,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 10:05:28,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 10:05:28,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 10:05:28,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 10:05:28,759 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 10:05:28,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array17_pattern.c [2021-12-21 10:05:28,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b2b75e7/737707a2d17a4fcb9a2c65e8672f76fe/FLAGf5582e2d3 [2021-12-21 10:05:29,158 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 10:05:29,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array17_pattern.c [2021-12-21 10:05:29,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b2b75e7/737707a2d17a4fcb9a2c65e8672f76fe/FLAGf5582e2d3 [2021-12-21 10:05:29,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b2b75e7/737707a2d17a4fcb9a2c65e8672f76fe [2021-12-21 10:05:29,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 10:05:29,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 10:05:29,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 10:05:29,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 10:05:29,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 10:05:29,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d06652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29, skipping insertion in model container [2021-12-21 10:05:29,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 10:05:29,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 10:05:29,304 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/array17_pattern.c[1441,1454] [2021-12-21 10:05:29,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 10:05:29,330 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 10:05:29,337 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/array17_pattern.c[1441,1454] [2021-12-21 10:05:29,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 10:05:29,353 INFO L208 MainTranslator]: Completed translation [2021-12-21 10:05:29,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29 WrapperNode [2021-12-21 10:05:29,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 10:05:29,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 10:05:29,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 10:05:29,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 10:05:29,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,377 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2021-12-21 10:05:29,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 10:05:29,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 10:05:29,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 10:05:29,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 10:05:29,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 10:05:29,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 10:05:29,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 10:05:29,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 10:05:29,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (1/1) ... [2021-12-21 10:05:29,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 10:05:29,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:05:29,419 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 10:05:29,426 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 10:05:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 10:05:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 10:05:29,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 10:05:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 10:05:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 10:05:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 10:05:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 10:05:29,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 10:05:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 10:05:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 10:05:29,483 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 10:05:29,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 10:05:29,597 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 10:05:29,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 10:05:29,602 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-21 10:05:29,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:05:29 BoogieIcfgContainer [2021-12-21 10:05:29,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 10:05:29,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 10:05:29,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 10:05:29,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 10:05:29,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:05:29" (1/3) ... [2021-12-21 10:05:29,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700488b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:05:29, skipping insertion in model container [2021-12-21 10:05:29,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:29" (2/3) ... [2021-12-21 10:05:29,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700488b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:05:29, skipping insertion in model container [2021-12-21 10:05:29,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:05:29" (3/3) ... [2021-12-21 10:05:29,609 INFO L111 eAbstractionObserver]: Analyzing ICFG array17_pattern.c [2021-12-21 10:05:29,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 10:05:29,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 10:05:29,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 10:05:29,647 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 10:05:29,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 10:05:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 10:05:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 10:05:29,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:05:29,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:05:29,663 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:05:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:05:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2021-12-21 10:05:29,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:05:29,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131469173] [2021-12-21 10:05:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:29,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:05:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:05:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 10:05:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:05:29,773 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 10:05:29,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:05:29,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131469173] [2021-12-21 10:05:29,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131469173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:05:29,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:05:29,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 10:05:29,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575392236] [2021-12-21 10:05:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:05:29,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 10:05:29,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:05:29,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 10:05:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 10:05:29,816 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 10:05:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:05:29,840 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2021-12-21 10:05:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 10:05:29,842 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 10:05:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:05:29,852 INFO L225 Difference]: With dead ends: 63 [2021-12-21 10:05:29,853 INFO L226 Difference]: Without dead ends: 29 [2021-12-21 10:05:29,857 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 10:05:29,863 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 10:05:29,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:05:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-21 10:05:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-21 10:05:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 10:05:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-12-21 10:05:29,902 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2021-12-21 10:05:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:05:29,902 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-12-21 10:05:29,903 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 10:05:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-12-21 10:05:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 10:05:29,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:05:29,905 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:05:29,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 10:05:29,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:05:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:05:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2021-12-21 10:05:29,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:05:29,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271790831] [2021-12-21 10:05:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:29,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:05:29,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:05:29,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828692423] [2021-12-21 10:05:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:29,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:05:29,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:05:29,964 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 10:05:29,965 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 10:05:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:05:30,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 10:05:30,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:05:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 10:05:30,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 10:05:30,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:05:30,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271790831] [2021-12-21 10:05:30,199 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:05:30,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828692423] [2021-12-21 10:05:30,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828692423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:05:30,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:05:30,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 10:05:30,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628176944] [2021-12-21 10:05:30,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:05:30,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 10:05:30,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:05:30,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 10:05:30,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 10:05:30,207 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:05:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:05:30,237 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-12-21 10:05:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 10:05:30,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-21 10:05:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:05:30,241 INFO L225 Difference]: With dead ends: 36 [2021-12-21 10:05:30,242 INFO L226 Difference]: Without dead ends: 32 [2021-12-21 10:05:30,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 10:05:30,247 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 10:05:30,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:05:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-21 10:05:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-21 10:05:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 10:05:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-21 10:05:30,258 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2021-12-21 10:05:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:05:30,260 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-21 10:05:30,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:05:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-21 10:05:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-21 10:05:30,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:05:30,262 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:05:30,287 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 10:05:30,477 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 10:05:30,477 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:05:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:05:30,478 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2021-12-21 10:05:30,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:05:30,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104535332] [2021-12-21 10:05:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:30,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:05:30,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:05:30,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111759260] [2021-12-21 10:05:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:30,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:05:30,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:05:30,505 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 10:05:30,533 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 10:05:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:05:30,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 10:05:30,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:05:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 10:05:30,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 10:05:30,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:05:30,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104535332] [2021-12-21 10:05:30,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:05:30,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111759260] [2021-12-21 10:05:30,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111759260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:05:30,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:05:30,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 10:05:30,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263649760] [2021-12-21 10:05:30,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:05:30,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 10:05:30,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:05:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 10:05:30,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 10:05:30,671 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:05:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:05:30,746 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2021-12-21 10:05:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 10:05:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-21 10:05:30,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:05:30,749 INFO L225 Difference]: With dead ends: 67 [2021-12-21 10:05:30,749 INFO L226 Difference]: Without dead ends: 42 [2021-12-21 10:05:30,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 10:05:30,752 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 10:05:30,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:05:30,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-21 10:05:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-12-21 10:05:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 10:05:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-21 10:05:30,768 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2021-12-21 10:05:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:05:30,768 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-21 10:05:30,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:05:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-21 10:05:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-21 10:05:30,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:05:30,771 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:05:30,790 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 10:05:30,984 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 10:05:30,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:05:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:05:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2021-12-21 10:05:30,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:05:30,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163468497] [2021-12-21 10:05:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:30,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:05:30,994 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:05:30,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642907929] [2021-12-21 10:05:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:30,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:05:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:05:30,996 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 10:05:30,997 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 10:05:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:05:31,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 10:05:31,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:05:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 10:05:31,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 10:05:31,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:05:31,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163468497] [2021-12-21 10:05:31,093 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:05:31,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642907929] [2021-12-21 10:05:31,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642907929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:05:31,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:05:31,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 10:05:31,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978829246] [2021-12-21 10:05:31,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:05:31,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 10:05:31,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:05:31,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 10:05:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 10:05:31,095 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:05:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:05:31,126 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-12-21 10:05:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 10:05:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-21 10:05:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:05:31,127 INFO L225 Difference]: With dead ends: 64 [2021-12-21 10:05:31,127 INFO L226 Difference]: Without dead ends: 36 [2021-12-21 10:05:31,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 10:05:31,128 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 10:05:31,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:05:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-21 10:05:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-12-21 10:05:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 10:05:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-12-21 10:05:31,132 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2021-12-21 10:05:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:05:31,132 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-12-21 10:05:31,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:05:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-12-21 10:05:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 10:05:31,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:05:31,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:05:31,169 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 10:05:31,348 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 10:05:31,348 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:05:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:05:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2021-12-21 10:05:31,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:05:31,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755072236] [2021-12-21 10:05:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:31,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:05:31,359 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:05:31,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915308460] [2021-12-21 10:05:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:05:31,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:05:31,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:05:31,364 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 10:05:31,384 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 10:05:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:05:31,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-21 10:05:31,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:05:31,664 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 45 treesize of output 40 [2021-12-21 10:05:31,669 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 12 treesize of output 11 [2021-12-21 10:05:31,676 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 12 treesize of output 11 [2021-12-21 10:05:31,960 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 68 treesize of output 61 [2021-12-21 10:05:31,969 INFO L353 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-12-21 10:05:31,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 62 [2021-12-21 10:05:31,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 10:05:31,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 18 [2021-12-21 10:05:32,068 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 179 treesize of output 170 [2021-12-21 10:05:32,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 181 [2021-12-21 10:05:32,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2021-12-21 10:05:32,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 3 [2021-12-21 10:05:32,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 3 [2021-12-21 10:05:32,303 INFO L353 Elim1Store]: treesize reduction 23, result has 11.5 percent of original size [2021-12-21 10:05:32,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 27 [2021-12-21 10:05:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 10:05:32,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 10:06:15,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755072236] [2021-12-21 10:06:15,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915308460] [2021-12-21 10:06:15,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915308460] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 10:06:15,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 10:06:15,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-12-21 10:06:15,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302379647] [2021-12-21 10:06:15,481 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 10:06:15,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 10:06:15,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 10:06:15,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=639, Unknown=9, NotChecked=0, Total=756 [2021-12-21 10:06:15,482 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:06:18,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:18,657 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2021-12-21 10:06:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 10:06:18,657 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-12-21 10:06:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:18,658 INFO L225 Difference]: With dead ends: 97 [2021-12-21 10:06:18,658 INFO L226 Difference]: Without dead ends: 72 [2021-12-21 10:06:18,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=192, Invalid=1130, Unknown=10, NotChecked=0, Total=1332 [2021-12-21 10:06:18,659 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:18,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 276 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 171 Invalid, 0 Unknown, 233 Unchecked, 0.2s Time] [2021-12-21 10:06:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-21 10:06:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2021-12-21 10:06:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 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 10:06:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2021-12-21 10:06:18,670 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 40 [2021-12-21 10:06:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:18,671 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2021-12-21 10:06:18,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 10:06:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2021-12-21 10:06:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 10:06:18,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:18,672 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:18,693 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 10:06:18,872 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 10:06:18,873 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:18,873 INFO L85 PathProgramCache]: Analyzing trace with hash -700801737, now seen corresponding path program 1 times [2021-12-21 10:06:18,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:18,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032763652] [2021-12-21 10:06:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:18,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:18,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:18,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66298498] [2021-12-21 10:06:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:18,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:18,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:18,883 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 10:06:18,884 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 10:06:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:18,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 10:06:18,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:18,979 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 10:06:18,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 10:06:18,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:18,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032763652] [2021-12-21 10:06:18,980 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:18,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66298498] [2021-12-21 10:06:18,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66298498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:06:18,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:06:18,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 10:06:18,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360650100] [2021-12-21 10:06:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:06:18,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 10:06:18,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 10:06:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 10:06:18,981 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 10:06:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:19,002 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2021-12-21 10:06:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 10:06:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-12-21 10:06:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:19,004 INFO L225 Difference]: With dead ends: 95 [2021-12-21 10:06:19,004 INFO L226 Difference]: Without dead ends: 72 [2021-12-21 10:06:19,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 10:06:19,006 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:19,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 73 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:06:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-21 10:06:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2021-12-21 10:06:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.24) internal successors, (62), 50 states have internal predecessors, (62), 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 10:06:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2021-12-21 10:06:19,033 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 40 [2021-12-21 10:06:19,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:19,033 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2021-12-21 10:06:19,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 10:06:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2021-12-21 10:06:19,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 10:06:19,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:19,037 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:19,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 10:06:19,253 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 10:06:19,254 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2021-12-21 10:06:19,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:19,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995296106] [2021-12-21 10:06:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:19,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:19,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:19,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579993858] [2021-12-21 10:06:19,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:19,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:19,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:19,279 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 10:06:19,280 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 10:06:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:06:19,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 10:06:19,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 10:06:19,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 10:06:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 10:06:19,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:19,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995296106] [2021-12-21 10:06:19,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:19,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579993858] [2021-12-21 10:06:19,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579993858] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 10:06:19,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 10:06:19,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-12-21 10:06:19,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405718184] [2021-12-21 10:06:19,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 10:06:19,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 10:06:19,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 10:06:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-21 10:06:19,744 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-21 10:06:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:20,104 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2021-12-21 10:06:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-21 10:06:20,104 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2021-12-21 10:06:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:20,106 INFO L225 Difference]: With dead ends: 167 [2021-12-21 10:06:20,106 INFO L226 Difference]: Without dead ends: 142 [2021-12-21 10:06:20,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-12-21 10:06:20,107 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 140 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:20,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 179 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 10:06:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-21 10:06:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2021-12-21 10:06:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-21 10:06:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2021-12-21 10:06:20,115 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 40 [2021-12-21 10:06:20,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:20,115 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2021-12-21 10:06:20,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-21 10:06:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2021-12-21 10:06:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 10:06:20,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:20,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:20,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-21 10:06:20,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:20,338 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2021-12-21 10:06:20,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:20,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447200083] [2021-12-21 10:06:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:20,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:20,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:20,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328598523] [2021-12-21 10:06:20,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 10:06:20,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:20,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:20,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 10:06:20,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 10:06:20,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 10:06:20,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 10:06:20,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 10:06:20,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 10:06:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 10:06:20,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:06:20,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447200083] [2021-12-21 10:06:20,579 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 10:06:20,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328598523] [2021-12-21 10:06:20,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328598523] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 10:06:20,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 10:06:20,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-21 10:06:20,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857768045] [2021-12-21 10:06:20,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 10:06:20,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 10:06:20,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:06:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 10:06:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 10:06:20,581 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 10:06:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:06:20,722 INFO L93 Difference]: Finished difference Result 171 states and 204 transitions. [2021-12-21 10:06:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 10:06:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-21 10:06:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:06:20,724 INFO L225 Difference]: With dead ends: 171 [2021-12-21 10:06:20,724 INFO L226 Difference]: Without dead ends: 137 [2021-12-21 10:06:20,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-21 10:06:20,725 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 86 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 10:06:20,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 156 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 10:06:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-21 10:06:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2021-12-21 10:06:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 86 states have internal predecessors, (99), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-21 10:06:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-12-21 10:06:20,735 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 42 [2021-12-21 10:06:20,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:06:20,735 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-12-21 10:06:20,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 10:06:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-12-21 10:06:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 10:06:20,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:06:20,736 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:06:20,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 10:06:20,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:20,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:06:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:06:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2021-12-21 10:06:20,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:06:20,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342577314] [2021-12-21 10:06:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:06:20,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:06:20,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:06:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533534948] [2021-12-21 10:06:20,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 10:06:20,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:06:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:06:20,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 10:06:20,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 10:06:21,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-21 10:06:21,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 10:06:21,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 10:06:21,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 10:06:21,239 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 179 treesize of output 170 [2021-12-21 10:06:21,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 181 [2021-12-21 10:06:21,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2021-12-21 10:06:21,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2021-12-21 10:06:21,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 3 [2021-12-21 10:06:21,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 3 [2021-12-21 10:06:21,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2021-12-21 10:06:21,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2021-12-21 10:06:21,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 3 [2021-12-21 10:06:21,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 3 [2021-12-21 10:06:29,003 WARN L227 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 92 DAG size of output: 55 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-21 10:06:29,005 INFO L353 Elim1Store]: treesize reduction 459, result has 23.6 percent of original size [2021-12-21 10:06:29,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 236