./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS --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 bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 04:11:32,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:11:32,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:11:32,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:11:32,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:11:32,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:11:32,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:11:32,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:11:32,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:11:32,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:11:32,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:11:32,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:11:32,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:11:32,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:11:32,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:11:32,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:11:32,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:11:32,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:11:32,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:11:32,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:11:32,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:11:32,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:11:32,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:11:32,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:11:32,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:11:32,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:11:32,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:11:32,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:11:32,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:11:32,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:11:32,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:11:32,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:11:32,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:11:32,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:11:32,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:11:32,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:11:32,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:11:32,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:11:32,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:11:32,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:11:32,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:11:32,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 04:11:32,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:11:32,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:11:32,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:11:32,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:11:32,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:11:32,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:11:32,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:11:32,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:11:32,558 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:11:32,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:11:32,558 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:11:32,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:11:32,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:11:32,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:11:32,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:11:32,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:11:32,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:11:32,560 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:11:32,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:11:32,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:11:32,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:11:32,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:11:32,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:11:32,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:11:32,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:11:32,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:11:32,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:11:32,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:11:32,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:11:32,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:11:32,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:11:32,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:11:32,563 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:11:32,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:11:32,563 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 [2022-11-23 04:11:32,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:11:32,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:11:32,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:11:32,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:11:32,890 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:11:32,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-11-23 04:11:36,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:11:36,316 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:11:36,316 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-11-23 04:11:36,324 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/data/5aa0766e5/e9f6a29d14b94d60a0d3f6c068f0bcbb/FLAG83028a16e [2022-11-23 04:11:36,350 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/data/5aa0766e5/e9f6a29d14b94d60a0d3f6c068f0bcbb [2022-11-23 04:11:36,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:11:36,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:11:36,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:11:36,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:11:36,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:11:36,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b07d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36, skipping insertion in model container [2022-11-23 04:11:36,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:11:36,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:11:36,585 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-11-23 04:11:36,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:11:36,615 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:11:36,627 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-11-23 04:11:36,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:11:36,650 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:11:36,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36 WrapperNode [2022-11-23 04:11:36,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:11:36,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:11:36,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:11:36,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:11:36,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,694 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-23 04:11:36,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:11:36,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:11:36,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:11:36,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:11:36,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,742 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:11:36,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:11:36,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:11:36,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:11:36,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (1/1) ... [2022-11-23 04:11:36,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:11:36,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:36,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:11:36,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:11:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:11:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:11:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 04:11:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 04:11:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:11:36,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:11:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 04:11:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 04:11:36,930 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:11:36,932 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:11:37,152 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:11:37,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:11:37,158 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 04:11:37,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:11:37 BoogieIcfgContainer [2022-11-23 04:11:37,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:11:37,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:11:37,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:11:37,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:11:37,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:11:36" (1/3) ... [2022-11-23 04:11:37,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d387fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:11:37, skipping insertion in model container [2022-11-23 04:11:37,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:36" (2/3) ... [2022-11-23 04:11:37,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d387fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:11:37, skipping insertion in model container [2022-11-23 04:11:37,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:11:37" (3/3) ... [2022-11-23 04:11:37,170 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-2-n-u.c [2022-11-23 04:11:37,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:11:37,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 04:11:37,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:11:37,247 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78f87536, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:11:37,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 04:11:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:37,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 04:11:37,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:37,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:37,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1817636276, now seen corresponding path program 1 times [2022-11-23 04:11:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:37,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414722985] [2022-11-23 04:11:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:37,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:37,377 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:37,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145627148] [2022-11-23 04:11:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:37,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:37,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:37,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:37,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:11:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:37,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 04:11:37,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:11:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:11:37,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:11:37,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:37,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414722985] [2022-11-23 04:11:37,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:11:37,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145627148] [2022-11-23 04:11:37,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145627148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:37,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:37,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:11:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910998223] [2022-11-23 04:11:37,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:37,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:11:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:37,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:11:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:11:37,664 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:11:37,758 INFO L93 Difference]: Finished difference Result 43 states and 71 transitions. [2022-11-23 04:11:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:11:37,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 04:11:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:11:37,769 INFO L225 Difference]: With dead ends: 43 [2022-11-23 04:11:37,769 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 04:11:37,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:11:37,778 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:11:37,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:11:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 04:11:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 04:11:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-23 04:11:37,818 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2022-11-23 04:11:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:11:37,819 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-23 04:11:37,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-23 04:11:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 04:11:37,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:37,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:37,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:38,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 04:11:38,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:38,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash 429030367, now seen corresponding path program 1 times [2022-11-23 04:11:38,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:38,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142558547] [2022-11-23 04:11:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:38,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:38,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:38,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980305018] [2022-11-23 04:11:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:38,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:38,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:38,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:38,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 04:11:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:38,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 04:11:38,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:11:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:11:38,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:11:38,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:38,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142558547] [2022-11-23 04:11:38,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:11:38,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980305018] [2022-11-23 04:11:38,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980305018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:38,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:38,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:11:38,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013712075] [2022-11-23 04:11:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:38,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:11:38,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:11:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:11:38,183 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:11:38,229 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2022-11-23 04:11:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:11:38,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 04:11:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:11:38,231 INFO L225 Difference]: With dead ends: 43 [2022-11-23 04:11:38,231 INFO L226 Difference]: Without dead ends: 28 [2022-11-23 04:11:38,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:11:38,233 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:11:38,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:11:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-23 04:11:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-11-23 04:11:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-23 04:11:38,240 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-11-23 04:11:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:11:38,240 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-23 04:11:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-23 04:11:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 04:11:38,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:38,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:38,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:38,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash -270581085, now seen corresponding path program 1 times [2022-11-23 04:11:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:38,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955328853] [2022-11-23 04:11:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:38,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:38,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884536549] [2022-11-23 04:11:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:38,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:38,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:38,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:38,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 04:11:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:38,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:11:38,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:11:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:11:38,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:11:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:11:38,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:38,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955328853] [2022-11-23 04:11:38,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:11:38,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884536549] [2022-11-23 04:11:38,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884536549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:11:38,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:11:38,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-23 04:11:38,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383394507] [2022-11-23 04:11:38,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:11:38,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 04:11:38,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:38,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 04:11:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:11:38,663 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:11:38,775 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-11-23 04:11:38,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 04:11:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 04:11:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:11:38,777 INFO L225 Difference]: With dead ends: 63 [2022-11-23 04:11:38,777 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 04:11:38,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-23 04:11:38,779 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:11:38,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 37 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:11:38,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 04:11:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2022-11-23 04:11:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-11-23 04:11:38,829 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2022-11-23 04:11:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:11:38,831 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-11-23 04:11:38,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-11-23 04:11:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 04:11:38,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:38,833 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:38,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:39,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:39,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1443885857, now seen corresponding path program 2 times [2022-11-23 04:11:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:39,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809420626] [2022-11-23 04:11:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:39,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:39,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488455129] [2022-11-23 04:11:39,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:11:39,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:39,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:39,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:39,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 04:11:39,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 04:11:39,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:11:39,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 04:11:39,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:11:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 04:11:39,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:11:39,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:39,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809420626] [2022-11-23 04:11:39,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:11:39,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488455129] [2022-11-23 04:11:39,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488455129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:39,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:39,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:11:39,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648614238] [2022-11-23 04:11:39,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:39,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:11:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:11:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:11:39,186 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:11:39,229 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2022-11-23 04:11:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:11:39,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 04:11:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:11:39,232 INFO L225 Difference]: With dead ends: 84 [2022-11-23 04:11:39,232 INFO L226 Difference]: Without dead ends: 66 [2022-11-23 04:11:39,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:11:39,233 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:11:39,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:11:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-23 04:11:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 37. [2022-11-23 04:11:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-23 04:11:39,244 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 17 [2022-11-23 04:11:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:11:39,244 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-23 04:11:39,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-23 04:11:39,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 04:11:39,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:39,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:39,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:39,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:39,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:39,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:39,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1541106392, now seen corresponding path program 1 times [2022-11-23 04:11:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:39,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915079280] [2022-11-23 04:11:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:39,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:39,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:39,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399098484] [2022-11-23 04:11:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:39,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 04:11:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:39,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 04:11:39,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:11:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 04:11:39,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:11:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 04:11:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:39,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915079280] [2022-11-23 04:11:39,728 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:11:39,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399098484] [2022-11-23 04:11:39,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399098484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:11:39,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:11:39,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-23 04:11:39,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008531509] [2022-11-23 04:11:39,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:11:39,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 04:11:39,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 04:11:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-11-23 04:11:39,731 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:39,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:11:39,965 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2022-11-23 04:11:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 04:11:39,966 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-23 04:11:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:11:39,967 INFO L225 Difference]: With dead ends: 120 [2022-11-23 04:11:39,967 INFO L226 Difference]: Without dead ends: 86 [2022-11-23 04:11:39,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-11-23 04:11:39,968 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 234 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:11:39,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 60 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:11:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-23 04:11:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2022-11-23 04:11:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2022-11-23 04:11:39,984 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 24 [2022-11-23 04:11:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:11:39,984 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2022-11-23 04:11:39,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2022-11-23 04:11:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 04:11:39,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:39,985 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:39,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:40,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:40,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:40,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1220021784, now seen corresponding path program 2 times [2022-11-23 04:11:40,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:40,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008560803] [2022-11-23 04:11:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:40,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:40,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:40,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004599463] [2022-11-23 04:11:40,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:11:40,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:40,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:40,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:40,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 04:11:40,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:11:40,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:11:40,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 04:11:40,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:11:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-23 04:11:40,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:11:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-23 04:11:40,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008560803] [2022-11-23 04:11:40,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:11:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004599463] [2022-11-23 04:11:40,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004599463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:11:40,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:11:40,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-23 04:11:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750863063] [2022-11-23 04:11:40,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:11:40,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-23 04:11:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:40,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-23 04:11:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-11-23 04:11:40,835 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:11:41,445 INFO L93 Difference]: Finished difference Result 234 states and 289 transitions. [2022-11-23 04:11:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 04:11:41,445 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-23 04:11:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:11:41,447 INFO L225 Difference]: With dead ends: 234 [2022-11-23 04:11:41,447 INFO L226 Difference]: Without dead ends: 170 [2022-11-23 04:11:41,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 04:11:41,449 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 472 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 04:11:41,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 109 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 04:11:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-23 04:11:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 127. [2022-11-23 04:11:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 126 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2022-11-23 04:11:41,475 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 36 [2022-11-23 04:11:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:11:41,476 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2022-11-23 04:11:41,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2022-11-23 04:11:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 04:11:41,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:41,478 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:41,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:41,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 04:11:41,685 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:41,686 INFO L85 PathProgramCache]: Analyzing trace with hash -783303832, now seen corresponding path program 3 times [2022-11-23 04:11:41,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:41,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092342948] [2022-11-23 04:11:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:41,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:41,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41338214] [2022-11-23 04:11:41,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 04:11:41,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:41,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:41,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:41,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 04:11:41,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 04:11:41,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:11:41,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:11:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:11:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-23 04:11:42,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:11:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-23 04:11:42,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:42,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092342948] [2022-11-23 04:11:42,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:11:42,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41338214] [2022-11-23 04:11:42,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41338214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:11:42,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:11:42,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-23 04:11:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717291401] [2022-11-23 04:11:42,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:11:42,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 04:11:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 04:11:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:11:42,149 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:11:42,323 INFO L93 Difference]: Finished difference Result 590 states and 718 transitions. [2022-11-23 04:11:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 04:11:42,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-23 04:11:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:11:42,326 INFO L225 Difference]: With dead ends: 590 [2022-11-23 04:11:42,326 INFO L226 Difference]: Without dead ends: 491 [2022-11-23 04:11:42,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-23 04:11:42,328 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 158 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:11:42,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 34 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:11:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-23 04:11:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 277. [2022-11-23 04:11:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.1195652173913044) internal successors, (309), 276 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 309 transitions. [2022-11-23 04:11:42,391 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 309 transitions. Word has length 60 [2022-11-23 04:11:42,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:11:42,391 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 309 transitions. [2022-11-23 04:11:42,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 309 transitions. [2022-11-23 04:11:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-23 04:11:42,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:11:42,396 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:42,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 04:11:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 04:11:42,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:11:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2132288564, now seen corresponding path program 4 times [2022-11-23 04:11:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:42,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30817867] [2022-11-23 04:11:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:42,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:11:42,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549018557] [2022-11-23 04:11:42,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 04:11:42,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:11:42,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:42,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:11:42,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a9de3f-d088-46d6-8f2f-e1aa2851d101/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 04:17:26,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 04:17:26,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:17:26,154 WARN L261 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 558 conjunts are in the unsatisfiable core [2022-11-23 04:17:26,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:17:26,279 INFO L321 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2022-11-23 04:17:26,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-11-23 04:17:26,356 INFO L321 Elim1Store]: treesize reduction 180, result has 20.0 percent of original size [2022-11-23 04:17:26,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 75 [2022-11-23 04:17:26,500 INFO L321 Elim1Store]: treesize reduction 441, result has 17.9 percent of original size [2022-11-23 04:17:26,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 119 [2022-11-23 04:17:26,684 INFO L321 Elim1Store]: treesize reduction 560, result has 13.7 percent of original size [2022-11-23 04:17:26,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 136 treesize of output 153 [2022-11-23 04:17:26,929 INFO L321 Elim1Store]: treesize reduction 825, result has 11.9 percent of original size [2022-11-23 04:17:26,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 41 case distinctions, treesize of input 169 treesize of output 192 [2022-11-23 04:17:27,310 INFO L321 Elim1Store]: treesize reduction 1140, result has 10.4 percent of original size [2022-11-23 04:17:27,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 61 case distinctions, treesize of input 202 treesize of output 231 [2022-11-23 04:17:27,773 INFO L321 Elim1Store]: treesize reduction 1505, result has 9.3 percent of original size [2022-11-23 04:17:27,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 85 case distinctions, treesize of input 235 treesize of output 270 [2022-11-23 04:17:28,673 INFO L321 Elim1Store]: treesize reduction 2246, result has 10.9 percent of original size [2022-11-23 04:17:28,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 273 treesize of output 314 [2022-11-23 04:17:29,453 INFO L321 Elim1Store]: treesize reduction 2385, result has 7.7 percent of original size [2022-11-23 04:17:29,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 145 case distinctions, treesize of input 301 treesize of output 348 [2022-11-23 04:17:30,969 INFO L321 Elim1Store]: treesize reduction 3318, result has 9.5 percent of original size [2022-11-23 04:17:30,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 339 treesize of output 392 [2022-11-23 04:17:32,171 INFO L321 Elim1Store]: treesize reduction 3465, result has 6.6 percent of original size [2022-11-23 04:17:32,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 221 case distinctions, treesize of input 367 treesize of output 426 [2022-11-23 04:17:33,676 INFO L321 Elim1Store]: treesize reduction 4080, result has 6.1 percent of original size [2022-11-23 04:17:33,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 265 case distinctions, treesize of input 400 treesize of output 465 [2022-11-23 04:17:35,428 INFO L321 Elim1Store]: treesize reduction 4745, result has 5.7 percent of original size [2022-11-23 04:17:35,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 313 case distinctions, treesize of input 433 treesize of output 504 [2022-11-23 04:17:37,779 INFO L321 Elim1Store]: treesize reduction 5460, result has 5.4 percent of original size [2022-11-23 04:17:37,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 365 case distinctions, treesize of input 466 treesize of output 543 [2022-11-23 04:17:41,864 INFO L321 Elim1Store]: treesize reduction 6873, result has 7.1 percent of original size [2022-11-23 04:17:41,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 435 case distinctions, treesize of input 504 treesize of output 587 [2022-11-23 04:17:45,417 INFO L321 Elim1Store]: treesize reduction 7040, result has 4.8 percent of original size [2022-11-23 04:17:45,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 31 select indices, 31 select index equivalence classes, 0 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 481 case distinctions, treesize of input 532 treesize of output 621 [2022-11-23 04:17:49,514 INFO L321 Elim1Store]: treesize reduction 7905, result has 4.5 percent of original size [2022-11-23 04:17:49,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 545 case distinctions, treesize of input 565 treesize of output 660 [2022-11-23 04:17:56,277 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 1174 DAG size of output: 192 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:17:56,279 INFO L321 Elim1Store]: treesize reduction 9606, result has 6.2 percent of original size [2022-11-23 04:17:56,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 35 select indices, 35 select index equivalence classes, 0 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 630 case distinctions, treesize of input 603 treesize of output 704 [2022-11-23 04:18:02,141 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 1042 DAG size of output: 109 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:18:02,142 INFO L321 Elim1Store]: treesize reduction 9785, result has 4.1 percent of original size [2022-11-23 04:18:02,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 37 select indices, 37 select index equivalence classes, 0 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 685 case distinctions, treesize of input 631 treesize of output 738 [2022-11-23 04:18:09,128 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 1136 DAG size of output: 114 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:18:09,129 INFO L321 Elim1Store]: treesize reduction 10800, result has 3.9 percent of original size [2022-11-23 04:18:09,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 39 select indices, 39 select index equivalence classes, 0 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 761 case distinctions, treesize of input 664 treesize of output 777 [2022-11-23 04:18:17,311 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 1234 DAG size of output: 119 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:18:17,312 INFO L321 Elim1Store]: treesize reduction 11865, result has 3.8 percent of original size [2022-11-23 04:18:17,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 41 select indices, 41 select index equivalence classes, 0 disjoint index pairs (out of 820 index pairs), introduced 41 new quantified variables, introduced 841 case distinctions, treesize of input 697 treesize of output 816 [2022-11-23 04:18:26,848 WARN L233 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 1336 DAG size of output: 124 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:18:26,850 INFO L321 Elim1Store]: treesize reduction 12980, result has 3.6 percent of original size [2022-11-23 04:18:26,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 43 select indices, 43 select index equivalence classes, 0 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 925 case distinctions, treesize of input 730 treesize of output 855 [2022-11-23 04:18:42,753 WARN L233 SmtUtils]: Spent 14.12s on a formula simplification. DAG size of input: 1708 DAG size of output: 243 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:18:42,754 INFO L321 Elim1Store]: treesize reduction 16630, result has 4.8 percent of original size [2022-11-23 04:18:42,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 45 select indices, 45 select index equivalence classes, 0 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 1035 case distinctions, treesize of input 784 treesize of output 915 [2022-11-23 04:19:03,965 WARN L233 SmtUtils]: Spent 20.72s on a formula simplification. DAG size of input: 2029 DAG size of output: 254 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:19:03,967 INFO L321 Elim1Store]: treesize reduction 18926, result has 4.4 percent of original size [2022-11-23 04:19:03,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 0 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 1128 case distinctions, treesize of input 822 treesize of output 959 [2022-11-23 04:19:27,041 WARN L233 SmtUtils]: Spent 22.55s on a formula simplification. DAG size of input: 2108 DAG size of output: 251 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:19:27,042 INFO L321 Elim1Store]: treesize reduction 20270, result has 4.2 percent of original size [2022-11-23 04:19:27,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 49 select indices, 49 select index equivalence classes, 0 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 1223 case distinctions, treesize of input 850 treesize of output 993 [2022-11-23 04:19:54,247 WARN L233 SmtUtils]: Spent 26.62s on a formula simplification. DAG size of input: 2314 DAG size of output: 255 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:19:54,249 INFO L321 Elim1Store]: treesize reduction 22171, result has 3.9 percent of original size [2022-11-23 04:19:54,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 51 select indices, 51 select index equivalence classes, 0 disjoint index pairs (out of 1275 index pairs), introduced 51 new quantified variables, introduced 1323 case distinctions, treesize of input 883 treesize of output 1032 [2022-11-23 04:20:29,416 WARN L233 SmtUtils]: Spent 34.60s on a formula simplification. DAG size of input: 2683 DAG size of output: 278 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:20:29,418 INFO L321 Elim1Store]: treesize reduction 24749, result has 3.8 percent of original size [2022-11-23 04:20:29,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 53 select indices, 53 select index equivalence classes, 0 disjoint index pairs (out of 1378 index pairs), introduced 53 new quantified variables, introduced 1431 case distinctions, treesize of input 921 treesize of output 1076 [2022-11-23 04:21:12,323 WARN L233 SmtUtils]: Spent 42.27s on a formula simplification. DAG size of input: 2919 DAG size of output: 282 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:21:12,324 INFO L321 Elim1Store]: treesize reduction 27159, result has 3.6 percent of original size [2022-11-23 04:21:12,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 55 select indices, 55 select index equivalence classes, 0 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 1539 case distinctions, treesize of input 960 treesize of output 1121 [2022-11-23 04:22:02,886 WARN L233 SmtUtils]: Spent 49.84s on a formula simplification. DAG size of input: 3159 DAG size of output: 286 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:22:02,887 INFO L321 Elim1Store]: treesize reduction 29625, result has 3.4 percent of original size [2022-11-23 04:22:02,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 57 select indices, 57 select index equivalence classes, 0 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 1651 case distinctions, treesize of input 999 treesize of output 1166 [2022-11-23 04:23:01,580 WARN L233 SmtUtils]: Spent 57.99s on a formula simplification. DAG size of input: 3403 DAG size of output: 290 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:23:01,581 INFO L321 Elim1Store]: treesize reduction 32147, result has 3.2 percent of original size [2022-11-23 04:23:01,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 59 select indices, 59 select index equivalence classes, 0 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 1767 case distinctions, treesize of input 1038 treesize of output 1211 [2022-11-23 04:24:00,850 WARN L233 SmtUtils]: Spent 58.52s on a formula simplification. DAG size of input: 3404 DAG size of output: 275 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:24:00,851 INFO L321 Elim1Store]: treesize reduction 32486, result has 3.0 percent of original size [2022-11-23 04:24:00,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 61 select indices, 61 select index equivalence classes, 0 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 1883 case distinctions, treesize of input 1048 treesize of output 1227 [2022-11-23 04:25:16,351 WARN L233 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 3853 DAG size of output: 318 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 04:25:16,352 INFO L321 Elim1Store]: treesize reduction 35534, result has 3.2 percent of original size [2022-11-23 04:25:16,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 63 select indices, 63 select index equivalence classes, 0 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 2016 case distinctions, treesize of input 1086 treesize of output 1271